initial commit

esp32/.gitignore

@@ -0,0 +1 @@
+.pio

esp32/include/README

@@ -0,0 +1,39 @@
+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

esp32/lib/README

@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

esp32/platformio.ini

@@ -0,0 +1,19 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+[env:seeed_xiao_esp32c3]
+platform = espressif32
+board = seeed_xiao_esp32c3
+framework = arduino
+lib_deps =
+  arduino-libraries/ArduinoHttpClient@^0.6.1
+  tzapu/WiFiManager@^2.0.17
+  bblanchon/ArduinoJson@^7.1.0
+  khoih-prog/ESP32_C3_TimerInterrupt@^1.8.0
+build_flags = -Wall -Werror

esp32/src/main.cpp

@@ -0,0 +1,296 @@
+#include <Arduino.h>
+#include <ArduinoHttpClient.h>
+#include <WiFiClient.h>
+#include <WiFiManager.h>
+#include <ArduinoJson.h>
+#include <ESP32_C3_TimerInterrupt.h>
+
+#define DISP_CLK D7
+#define DISP_SER D8
+#define DISP_PWM D6
+
+#define LED_OPEN D10
+#define LED_CLOSE D4
+
+#define SW_OPEN D9
+#define SW_CLOSE D5
+#define SW_PLUS D0
+#define SW_MINUS D2
+
+
+#define I_E 10
+#define I_DASH 11
+#define E_RANGE 0
+
+uint8_t dot01 = 0b00000010;
+uint8_t digits01[] = {
+  //⁻┌┐-└_.┘
+  0b11101101,  // 0
+  0b00100001,  // 1
+  0b10111100,  // 2
+  0b10110101,  // 3
+  0b01110001,  // 4
+  0b11010101,  // 5
+  0b11011101,  // 6
+  0b10100001,  // 7
+  0b11111101,  // 8
+  0b11110101,  // 9
+  0b11011100,  // E
+  0b00010000,  // -
+};
+
+uint8_t dot10 = 0b00010000;
+uint8_t digits10[] = {
+  //_┘└.┐-⁻┌
+  0b11101011,  // 0
+  0b01001000,  // 1
+  0b10101110,  // 2
+  0b11001110,  // 3
+  0b01001101,  // 4
+  0b11000111,  // 5
+  0b11100111,  // 6
+  0b01001010,  // 7
+  0b11101111,  // 8
+  0b11001111,  // 9
+  0b10100111,  // E
+  0b00000100,  // -
+};
+
+uint16_t spinner[] = {
+  0b0000001100000000,  // ┌
+  0b0000001010000000,  // ⁻
+  0b0000000010100000,  // ┐
+  0b0000000000100001,  // |
+  0b0000000000000101,  // ┘
+  0b1000000000000100,  // _
+  0b1010000000000000,  // └
+  0b0010000100000000,  // |
+};
+
+
+WiFiManager wifiManager;
+WiFiClient wifi;
+HttpClient client(wifi, "10.20.13.12", 8086);
+ESP32Timer ITimer0(0);
+
+
+char buf[1024];
+volatile int8_t counter = 0;
+volatile bool space_open = false;
+volatile bool edited = false, just_edited = false, request_update = false;
+volatile uint32_t last_edit = 0;
+
+void isr_open() {
+  static uint32_t last = 0;
+  if (millis() - last < 100) {
+    return;
+  }
+  last = millis();
+  space_open = true;
+  edited = true;
+  just_edited = true;
+  last_edit = millis();
+}
+
+void isr_close() {
+  static uint32_t last = 0;
+  if (millis() - last < 100) {
+    return;
+  }
+  if (digitalRead(SW_OPEN) == LOW) {
+    ESP.restart();
+  }
+  last = millis();
+  space_open = false;
+  counter = 0;
+  edited = true;
+  just_edited = true;
+  last_edit = millis();
+}
+
+void isr_plus() {
+  static uint32_t last = 0;
+  if (millis() - last < 100) {
+    return;
+  }
+  last = millis();
+  if (counter < 99) {
+    counter++;
+    edited = true;
+    just_edited = true;
+    last_edit = millis();
+  }
+}
+
+void isr_minus() {
+  static uint32_t last = 0;
+  if (millis() - last < 100) {
+    return;
+  }
+  last = millis();
+  if (counter > 0) {
+    counter--;
+    edited = true;
+    just_edited = true;
+    last_edit = millis();
+  }
+}
+
+bool timer0_isr(void *data) {
+  request_update = true;
+  return true;
+}
+
+void setBrightness(uint8_t value) {
+  analogWrite(DISP_PWM, 255-value);
+}
+
+
+void showNumber(int8_t number, uint8_t bright = 255, bool show_dot01 = false, bool show_dot10 = false) {
+  setBrightness(0);
+  if (number < -9 || number > 99) {
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits01[E_RANGE]);
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits10[I_E] | dot10);
+  } else if (number < 0) {
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits01[-number] | dot01 * show_dot01);
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits10[I_DASH] | dot10 * show_dot10);
+  } else if (number < 10) {
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits01[number] | dot01 * show_dot01);
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, 0 | dot10 * show_dot10);
+  } else {
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits01[number%10] | dot01 * show_dot01);
+    shiftOut(DISP_SER, DISP_CLK, MSBFIRST, digits10[number/10] | dot10 * show_dot10);
+  }
+  digitalWrite(DISP_CLK, HIGH);
+  delay(2);
+  digitalWrite(DISP_CLK, LOW);
+  delay(2);
+  setBrightness(bright);
+}
+
+void showSpinner(uint8_t bright = 255) {
+  setBrightness(0);
+  uint8_t spinner_i = (millis() / 50) % 8;
+  shiftOut(DISP_SER, DISP_CLK, MSBFIRST, (uint8_t) (spinner[spinner_i] & 0xff));
+  shiftOut(DISP_SER, DISP_CLK, MSBFIRST, (uint8_t) (spinner[spinner_i] >> 8));
+  digitalWrite(DISP_CLK, HIGH);
+  digitalWrite(DISP_CLK, LOW);
+  setBrightness(bright);
+}
+
+void draw(uint8_t bright = 255, bool show_dot01 = false) {
+  digitalWrite(LED_OPEN, space_open);
+  digitalWrite(LED_CLOSE, !space_open);
+  showNumber(counter, bright, show_dot01);
+}
+
+void reconnect() {
+  if (WiFi.status() != WL_CONNECTED) {
+    Serial.print("Reconnecting to WiFi");
+    WiFi.reconnect();
+    for (uint16_t i = 0; i < 1000 && WiFi.status() != WL_CONNECTED; ++i) {
+      showSpinner(64);
+      delay(50);
+      Serial.print(".");
+    }
+    Serial.println();
+    if (WiFi.status() == WL_CONNECTED) {
+      Serial.println("Reconnected!");
+    } else {
+      Serial.println("Reconnecting failed.");
+      ESP.restart();
+      while (true);
+    }
+  }
+  if (!client.connect("10.20.13.12", 8086)) {
+    Serial.println("Connect failed");
+    ESP.restart();
+    while (true);
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(SW_OPEN, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(SW_OPEN), isr_open, FALLING);
+  pinMode(SW_CLOSE, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(SW_CLOSE), isr_close, FALLING);
+  pinMode(SW_PLUS, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(SW_PLUS), isr_plus, FALLING);
+  pinMode(SW_MINUS, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(SW_MINUS), isr_minus, FALLING);
+
+  pinMode(LED_OPEN, OUTPUT);
+  pinMode(LED_CLOSE, OUTPUT);
+
+  pinMode(DISP_PWM, OUTPUT);
+  pinMode(DISP_SER, OUTPUT);
+  pinMode(DISP_CLK, OUTPUT);
+  digitalWrite(DISP_PWM, HIGH);
+
+  showNumber(88, 255, true, true);
+  digitalWrite(LED_OPEN, HIGH);
+  digitalWrite(LED_CLOSE, HIGH);
+  WiFi.setHostname("spaceapibox");
+  if (!wifiManager.autoConnect("spaceapibox", "12345678")) {
+    ESP.restart();
+    while (true);
+  }
+  ITimer0.attachInterruptInterval(60 * 1000 * 1000, timer0_isr);
+  edited = false;
+  request_update = true;
+  draw(16);
+}
+
+void loop() {
+  if (just_edited) {
+    just_edited = false;
+    draw(128, true);
+  }
+  if (edited && millis() - last_edit > 1000) {
+    edited = false;
+    Serial.println("Edited!");
+    //reconnect();
+    snprintf(buf, 1024, "open value=%d\npeople_now_present value=%d\n", space_open ? 1 : 0, counter);
+    Serial.print("Sending update: ");
+    Serial.println(buf);
+
+    client.beginRequest();
+    client.post("/write?db=space_state&precision=s&u=kiosk_update&p=Q5c57pxASewvSvwR", "text/plain", buf);
+    client.endRequest();
+
+    request_update = true;
+  }
+  if (request_update) {
+    draw(16, true);
+    request_update = false;
+    Serial.println("Requesting update!");
+    reconnect();
+    JsonDocument doc;
+
+    client.beginRequest();
+    client.get("/query?db=space_state&u=grafana&p=ifCevE7DC5AdyA2Z&q=select%20last(value)%20from%20open,%20people_now_present");
+    client.endRequest();
+
+    deserializeJson(doc, client.responseBody());
+    serializeJson(doc, Serial);
+    Serial.println();
+
+    if (doc.is<JsonObject>()) {
+      for (uint8_t i = 0; i < doc["results"][0]["series"].size(); ++i) {
+	if (doc["results"][0]["series"][i]["name"] == "open") {
+	  space_open = doc["results"][0]["series"][i]["values"][0][1].as<uint8_t>();
+	} else if (doc["results"][0]["series"][i]["name"] == "people_now_present") {
+	  counter = doc["results"][0]["series"][i]["values"][0][1].as<uint8_t>();
+	}
+      }
+      Serial.print("Read values from Influx DB: space_open=");
+      Serial.print(space_open);
+      Serial.print(", counter=");
+      Serial.println(counter);
+    }
+
+    // Update display
+    draw(16);
+  }
+}

esp32/test/README

@@ -0,0 +1,11 @@
+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html

led_socket/led_socket.scad

@@ -0,0 +1,29 @@
+
+$fn = 60;
+
+difference() {
+  union() {
+    // body
+    cylinder(h=6, d=5.8);
+    //alignment pin
+    translate([-1,0,0]) {
+      cube([2,3,4]);
+    }
+  }
+  // long leg hole
+  translate([-1.3,0,-1]) {
+    cylinder(h=8, d=1.2);
+  }
+  // short leg hole
+  translate([1.3,0,-1]) {
+    cylinder(h=8, d=1.2);
+  }
+  // short leg space
+  translate([0,-4,4]) {
+    cube([4,8,3]);
+  }
+  // short leg alignment
+  translate([3,0,-1]) {
+    cylinder(h=8, d=1.2);
+  }
+}

pcb/.gitignore

@@ -0,0 +1,31 @@
+# For PCBs designed using KiCad: https://www.kicad.org/
+# Format documentation: https://kicad.org/help/file-formats/
+
+# Temporary files
+*.000
+*.bak
+*.bck
+*.kicad_pcb-bak
+*.kicad_sch-bak
+*-backups
+*.kicad_prl
+*.sch-bak
+*~
+_autosave-*
+*.tmp
+*-save.pro
+*-save.kicad_pcb
+fp-info-cache
+~*.lck
+\#auto_saved_files#
+
+# Netlist files (exported from Eeschema)
+*.net
+
+# Autorouter files (exported from Pcbnew)
+*.dsn
+*.ses
+
+# Exported BOM files
+*.xml
+*.csv

pcb/pcb/Library.kicad_sym

@@ -0,0 +1,739 @@
+(kicad_symbol_lib
+	(version 20231120)
+	(generator "kicad_symbol_editor")
+	(generator_version "8.0")
+	(symbol "HDSP-7401"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at -3.81 13.97 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" "LTS4940AHR"
+			(at 6.35 13.97 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Display_7Segment:HDSP-7401"
+			(at 0 -13.97 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" "https://docs.broadcom.com/docs/AV02-2553EN"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" "One digit 7 segment yellow, common anode"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "ki_keywords" "display LED 7-segment"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "ki_fp_filters" "HDSP?7401*"
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "HDSP-7401_1_0"
+			(text "A"
+				(at 0.254 2.413 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "B"
+				(at 2.54 1.651 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "C"
+				(at 2.286 -1.397 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "D"
+				(at -0.254 -2.159 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "DP"
+				(at 3.556 -2.921 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "E"
+				(at -2.54 -1.397 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "F"
+				(at -2.286 1.651 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+			(text "G"
+				(at 0 0.889 0)
+				(effects
+					(font
+						(size 0.508 0.508)
+					)
+				)
+			)
+		)
+		(symbol "HDSP-7401_1_1"
+			(rectangle
+				(start -5.08 12.7)
+				(end 5.08 -12.7)
+				(stroke
+					(width 0.254)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(polyline
+				(pts
+					(xy -1.524 -0.381) (xy -1.778 -2.413)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy -1.27 -2.921) (xy 0.762 -2.921)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy -1.27 2.667) (xy -1.524 0.635)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy -1.016 0.127) (xy 1.016 0.127)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy -0.762 3.175) (xy 1.27 3.175)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 1.524 -0.381) (xy 1.27 -2.413)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 1.778 2.667) (xy 1.524 0.635)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(polyline
+				(pts
+					(xy 2.54 -2.921) (xy 2.54 -2.921)
+				)
+				(stroke
+					(width 0.508)
+					(type default)
+				)
+				(fill
+					(type none)
+				)
+			)
+			(pin input line
+				(at -7.62 -5.08 0)
+				(length 2.54)
+				(name "F"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 7.62 0)
+				(length 2.54)
+				(name "A"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "10"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 -7.62 0)
+				(length 2.54)
+				(name "G"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at 7.62 -7.62 180)
+				(length 2.54)
+				(name "CA"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 -2.54 0)
+				(length 2.54)
+				(name "E"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 0 0)
+				(length 2.54)
+				(name "D"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 2.54 0)
+				(length 2.54)
+				(name "C"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 -10.16 0)
+				(length 2.54)
+				(name "DP"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "7"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at 7.62 -10.16 180)
+				(length 2.54)
+				(name "CA"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "8"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin input line
+				(at -7.62 5.08 0)
+				(length 2.54)
+				(name "B"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "9"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
+	(symbol "XIAO-ESP32C3"
+		(exclude_from_sim no)
+		(in_bom yes)
+		(on_board yes)
+		(property "Reference" "U"
+			(at 1.27 -1.524 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Value" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+			)
+		)
+		(property "Footprint" "Library:XIAO-ESP32C3"
+			(at 20.066 11.684 90)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Datasheet" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(property "Description" ""
+			(at 0 0 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
+		(symbol "XIAO-ESP32C3_1_1"
+			(rectangle
+				(start 0 38.1)
+				(end 22.86 0)
+				(stroke
+					(width 0)
+					(type default)
+				)
+				(fill
+					(type background)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 33.02 0)
+				(length 5.08)
+				(name "D0"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 7.62 0)
+				(length 5.08)
+				(name "D9"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "10"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 5.08 0)
+				(length 5.08)
+				(name "D10"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "11"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_out line
+				(at 7.62 43.18 270)
+				(length 5.08)
+				(name "3V3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "12"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at 11.43 -5.08 90)
+				(length 5.08)
+				(name "GND"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "13"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin power_in line
+				(at 15.24 43.18 270)
+				(length 5.08)
+				(name "VUSB"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "14"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 30.48 0)
+				(length 5.08)
+				(name "D1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 27.94 0)
+				(length 5.08)
+				(name "D2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 25.4 0)
+				(length 5.08)
+				(name "D3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 22.86 0)
+				(length 5.08)
+				(name "D4"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 20.32 0)
+				(length 5.08)
+				(name "D5"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 17.78 0)
+				(length 5.08)
+				(name "D6"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "7"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 12.7 0)
+				(length 5.08)
+				(name "D7"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "8"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin tri_state line
+				(at -5.08 10.16 0)
+				(length 5.08)
+				(name "D8"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "9"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+		)
+	)
+)

pcb/pcb/Library.pretty/LTS4940AHR.kicad_mod

@@ -0,0 +1,290 @@
+(footprint "LTS4940AHR"
+	(version 20240108)
+	(generator "pcbnew")
+	(generator_version "8.0")
+	(layer "F.Cu")
+	(descr "7 segment digit in DIP14 7.62mm form factor")
+	(tags "THT DIP DIL PDIP 2.54mm 7.62mm")
+	(property "Reference" "REF**"
+		(at 3.81 -2.33 0)
+		(layer "F.SilkS")
+		(uuid "ab1aeba6-0260-4b2b-a55c-e0a5f11f3d49")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Value" "LTS4940AHR"
+		(at 3.81 17.57 0)
+		(layer "F.Fab")
+		(uuid "60313c8a-6b76-42be-87cc-bb3c5a88b63f")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Footprint" ""
+		(at 0 0 0)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "c9239995-6f80-4a65-9e52-ccdfaa2cd385")
+		(effects
+			(font
+				(size 1.27 1.27)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Datasheet" ""
+		(at 0 0 0)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "446e0009-02ec-40f0-a306-f0eb6b953969")
+		(effects
+			(font
+				(size 1.27 1.27)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Description" ""
+		(at 0 0 0)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "103d0b1e-e911-43e0-a41c-b0cd12328067")
+		(effects
+			(font
+				(size 1.27 1.27)
+				(thickness 0.15)
+			)
+		)
+	)
+	(attr through_hole)
+	(fp_line
+		(start 1.27 12.7)
+		(end 1.905 8.255)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "9f2803fa-8344-4858-8a73-5e86adfa38de")
+	)
+	(fp_line
+		(start 1.905 6.985)
+		(end 2.54 3.175)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "f050f676-99a8-442a-8f73-1103c6e5624f")
+	)
+	(fp_line
+		(start 2.54 7.62)
+		(end 5.08 7.62)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "7c8673b6-fcb0-412d-a495-619de4bf6edf")
+	)
+	(fp_line
+		(start 3.175 3.175)
+		(end 5.715 3.175)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "f1ca5efe-2fe3-4abf-b00d-2b401cbec45c")
+	)
+	(fp_line
+		(start 4.445 12.7)
+		(end 1.905 12.7)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "8a2c54b9-03b6-4373-bff3-547d2f3cdf33")
+	)
+	(fp_line
+		(start 5.715 8.255)
+		(end 5.08 12.7)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "b2cdb8df-ec03-4b92-a92d-da5e3813bbfe")
+	)
+	(fp_line
+		(start 6.35 3.175)
+		(end 5.715 6.985)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "1e402074-086d-47bc-ab37-e8acf5af61d4")
+	)
+	(fp_circle
+		(center 6.35 12.7)
+		(end 6.6675 12.7)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(fill none)
+		(layer "F.SilkS")
+		(uuid "3098b736-5aca-4e51-a384-4fb98ea3264b")
+	)
+	(fp_line
+		(start -1.1 -1.55)
+		(end -1.1 16.8)
+		(stroke
+			(width 0.05)
+			(type solid)
+		)
+		(layer "F.CrtYd")
+		(uuid "b07aecb3-da0a-4ab9-9131-75388f71a592")
+	)
+	(fp_line
+		(start -1.1 16.8)
+		(end 8.7 16.8)
+		(stroke
+			(width 0.05)
+			(type solid)
+		)
+		(layer "F.CrtYd")
+		(uuid "19ffd821-d4f2-4962-a550-8eece62b7b48")
+	)
+	(fp_line
+		(start 8.7 -1.55)
+		(end -1.1 -1.55)
+		(stroke
+			(width 0.05)
+			(type solid)
+		)
+		(layer "F.CrtYd")
+		(uuid "92ef5397-cd40-4db0-a774-e0cf99e74591")
+	)
+	(fp_line
+		(start 8.7 16.8)
+		(end 8.7 -1.55)
+		(stroke
+			(width 0.05)
+			(type solid)
+		)
+		(layer "F.CrtYd")
+		(uuid "12eb80e0-7e74-4f9d-ae5b-f10091b5a464")
+	)
+	(fp_text user "${REFERENCE}"
+		(at 1.905 4.445 90)
+		(layer "F.Fab")
+		(uuid "9101c920-3f59-433a-b80f-8664fe155fea")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(pad "1" thru_hole rect
+		(at 0 0)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "c59ff4fb-10d1-49fb-80e5-f15385e71fb6")
+	)
+	(pad "2" thru_hole oval
+		(at 0 2.54)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "2fbd18f5-2b15-4f1a-8612-5758443ef629")
+	)
+	(pad "3" thru_hole oval
+		(at 0 7.62)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "564d4e9d-3d0b-400f-aa2d-0b35e7233234")
+	)
+	(pad "4" thru_hole oval
+		(at 0 12.7)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "6f0c9286-356f-457f-b99b-4c43bcf6cd36")
+	)
+	(pad "5" thru_hole oval
+		(at 0 15.24)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "c3833d2a-c9c5-4574-b104-60a29e8296a9")
+	)
+	(pad "6" thru_hole oval
+		(at 7.62 15.24)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "2c9b7873-0c64-4d4d-9c9c-8cc0d94e071a")
+	)
+	(pad "7" thru_hole oval
+		(at 7.62 12.7)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "3b4c9797-a24f-4236-be8d-2b6d982fd4f8")
+	)
+	(pad "8" thru_hole oval
+		(at 7.62 5.08)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "21ae9355-1fe5-4add-9b95-c8c79d17a749")
+	)
+	(pad "9" thru_hole oval
+		(at 7.62 2.54)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "93731e7c-c52d-418c-9c92-d642d4be7052")
+	)
+	(pad "10" thru_hole oval
+		(at 7.62 0)
+		(size 1.6 1.6)
+		(drill 0.8)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "71443be0-a666-44ca-a1f9-a30bdf7c219c")
+	)
+	(model "${KICAD6_3DMODEL_DIR}/Display_7Segment.3dshapes/MAN71A.wrl"
+		(offset
+			(xyz 0 0 0)
+		)
+		(scale
+			(xyz 1 1 1)
+		)
+		(rotate
+			(xyz 0 0 0)
+		)
+	)
+)

pcb/pcb/Library.pretty/Rect_LED_Button.kicad_mod

@@ -0,0 +1,106 @@
+(footprint "Rect_LED_Button"
+	(version 20240108)
+	(generator "pcbnew")
+	(generator_version "8.0")
+	(layer "F.Cu")
+	(property "Reference" "REF**"
+		(at 0 -0.5 0)
+		(unlocked yes)
+		(layer "F.SilkS")
+		(uuid "d599bfd3-6d13-405d-bc99-de24bee1beb6")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Value" "Rect_LED_Button"
+		(at 0 1 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(uuid "40c5db43-51ea-48f9-9ec6-9c19cf2a5493")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Footprint" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "f9a3a92c-667c-45f9-a16d-cdf9ad3213b9")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Datasheet" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "7ab4fa88-5fbd-48c0-b689-177ba09573a7")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Description" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "4fa4c8aa-f5e0-4bbd-92f6-77ce0e5c2803")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(attr through_hole)
+	(fp_rect
+		(start -12 -9)
+		(end 12 9)
+		(stroke
+			(width 0.12)
+			(type default)
+		)
+		(fill none)
+		(layer "B.CrtYd")
+		(uuid "4ea313df-0210-4c71-897d-8e79a73af9a9")
+	)
+	(fp_rect
+		(start -12 -9)
+		(end 12 9)
+		(stroke
+			(width 0.12)
+			(type default)
+		)
+		(fill none)
+		(layer "F.CrtYd")
+		(uuid "1fc31af8-2cb4-42f6-9c7f-1dbec3f91cc8")
+	)
+	(pad "" np_thru_hole circle
+		(at 0 0)
+		(size 16 16)
+		(drill 16)
+		(layers "F&B.Cu" "*.Mask")
+		(uuid "7f3ad8dd-79e7-477d-8dff-f0f6c3a0bbee")
+	)
+	(pad "" np_thru_hole circle
+		(at 10.4 0)
+		(size 1.6 1.6)
+		(drill 1.6)
+		(layers "F&B.Cu" "*.Mask")
+		(uuid "48da5878-30b6-4878-ad8c-8621df4bb8e9")
+	)
+)

pcb/pcb/Library.pretty/XIAO-ESP32C3.kicad_mod

@@ -0,0 +1,324 @@
+(footprint "XIAO-ESP32C3"
+	(version 20240108)
+	(generator "pcbnew")
+	(generator_version "8.0")
+	(layer "F.Cu")
+	(property "Reference" "REF**"
+		(at 2.032 19.685 0)
+		(unlocked yes)
+		(layer "F.SilkS")
+		(uuid "8bf3ede1-4d00-419e-a26e-276107eec85b")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Value" "XIAO-ESP32C3"
+		(at 10.795 19.685 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(uuid "6946adc6-bbc3-461e-9faf-ad4193669196")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Footprint" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "8ef426d8-9c82-409b-85b8-2efde4a48c97")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Datasheet" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "ba400461-719c-4044-9a21-c82cafdedb51")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(property "Description" ""
+		(at 0 0 0)
+		(unlocked yes)
+		(layer "F.Fab")
+		(hide yes)
+		(uuid "b58329c7-59be-412e-a428-272afcd10c25")
+		(effects
+			(font
+				(size 1 1)
+				(thickness 0.15)
+			)
+		)
+	)
+	(attr through_hole)
+	(fp_line
+		(start 0.635 -2.54)
+		(end 14.605 -2.54)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "e8dddd28-a851-47fe-bb55-04417c81b483")
+	)
+	(fp_line
+		(start 0.635 17.78)
+		(end 14.605 17.78)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "12f06d21-a7c9-4925-812b-156956488a52")
+	)
+	(fp_rect
+		(start 3.175 -4.445)
+		(end 12.065 2.54)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(fill none)
+		(layer "F.SilkS")
+		(uuid "da851433-b1ae-4300-9830-67624e3aa733")
+	)
+	(fp_arc
+		(start -0.635 -1.27)
+		(mid -0.263026 -2.168026)
+		(end 0.635 -2.54)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "e86c46c1-8052-43c8-b1a7-dada864414f9")
+	)
+	(fp_arc
+		(start 0.635 17.78)
+		(mid -0.263026 17.408026)
+		(end -0.635 16.51)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "3c66204c-ceef-422f-a2a6-d6fa857e83c4")
+	)
+	(fp_arc
+		(start 14.605 -2.54)
+		(mid 15.503026 -2.168026)
+		(end 15.875 -1.27)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "2b5007b8-c08a-49cb-91c7-b7fc17224201")
+	)
+	(fp_arc
+		(start 15.875 16.51)
+		(mid 15.503026 17.408026)
+		(end 14.605 17.78)
+		(stroke
+			(width 0.15)
+			(type default)
+		)
+		(layer "F.SilkS")
+		(uuid "2d927d21-43fc-433b-98ce-c8ae89702bc0")
+	)
+	(fp_poly
+		(pts
+			(xy -1.778 0) (xy -2.54 0.635) (xy -2.54 -0.635)
+		)
+		(stroke
+			(width 0.15)
+			(type solid)
+		)
+		(fill solid)
+		(layer "F.SilkS")
+		(uuid "ccbb1fe8-25d2-48e4-8ed8-f02b60a936a4")
+	)
+	(fp_rect
+		(start -1.27 -3.175)
+		(end 16.51 18.415)
+		(stroke
+			(width 0.12)
+			(type default)
+		)
+		(fill none)
+		(layer "B.CrtYd")
+		(uuid "3db42cc7-72f5-47f9-a4e2-952c054274d0")
+	)
+	(fp_rect
+		(start -1.27 -3.175)
+		(end 16.51 18.415)
+		(stroke
+			(width 0.12)
+			(type default)
+		)
+		(fill none)
+		(layer "F.CrtYd")
+		(uuid "2979a423-c38d-4dc8-9f55-f075114fa43e")
+	)
+	(pad "1" thru_hole rect
+		(at 0 0)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "33034c34-91a9-4d76-91bb-24a359afafe7")
+	)
+	(pad "2" thru_hole circle
+		(at 0 2.54)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "d9335d51-2366-439c-b854-07fbac20a77c")
+	)
+	(pad "3" thru_hole circle
+		(at 0 5.08)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "4c87a941-f16d-46ed-bfb0-cba9f2df65db")
+	)
+	(pad "4" thru_hole circle
+		(at 0 7.62)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "f3662192-7f5b-49e9-ab60-660f5e640bd7")
+	)
+	(pad "5" thru_hole circle
+		(at 0 10.16)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "3a8fb790-57fe-47fa-8d85-5583145d7b78")
+	)
+	(pad "6" thru_hole circle
+		(at 0 12.7)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "3bb583df-6fa0-4b25-9abe-3dd1361d0250")
+	)
+	(pad "7" thru_hole circle
+		(at 0 15.24)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "8dfd91d7-bf19-45c1-b96d-ddefcc956485")
+	)
+	(pad "8" thru_hole circle
+		(at 15.24 15.24)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "b98977c1-4bab-4b4a-b452-5e401f15e282")
+	)
+	(pad "9" thru_hole circle
+		(at 15.24 12.7)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "dc5d862b-e345-43c6-8ff0-f931d4d2de18")
+	)
+	(pad "10" thru_hole circle
+		(at 15.24 10.16)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "905b8259-034a-4455-9eec-97364e0342c4")
+	)
+	(pad "11" thru_hole circle
+		(at 15.24 7.62)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "557aa2bf-dda6-4abb-9637-dd54806afa5c")
+	)
+	(pad "12" thru_hole circle
+		(at 15.24 5.08)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "4c3a21a8-d750-4d89-b161-07780d153adb")
+	)
+	(pad "13" thru_hole circle
+		(at 15.24 2.54)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "2de18c37-3f55-48bf-9230-bd0785b74ba8")
+	)
+	(pad "14" thru_hole circle
+		(at 15.24 0)
+		(size 1.524 1.524)
+		(drill 0.762)
+		(layers "*.Cu" "*.Mask")
+		(remove_unused_layers no)
+		(uuid "8b54e012-91e3-4485-8af4-4030e615fa8e")
+	)
+	(model "${KICAD8_3DMODEL_DIR}/Connector_PinHeader_2.54mm.3dshapes/PinHeader_1x07_P2.54mm_Vertical.wrl"
+		(offset
+			(xyz 0 0 3)
+		)
+		(scale
+			(xyz 1 1 1)
+		)
+		(rotate
+			(xyz 0 180 0)
+		)
+	)
+	(model "${KICAD8_3DMODEL_DIR}/Connector_PinHeader_2.54mm.3dshapes/PinHeader_1x07_P2.54mm_Vertical.wrl"
+		(offset
+			(xyz 15.24 0 3)
+		)
+		(scale
+			(xyz 1 1 1)
+		)
+		(rotate
+			(xyz 0 180 0)
+		)
+	)
+	(model "${KIPRJMOD}/Seeed Studio XIAO-ESP32-C3.step"
+		(offset
+			(xyz 13.75 -9.35 3)
+		)
+		(scale
+			(xyz 1 1 1)
+		)
+		(rotate
+			(xyz -90 0 -90)
+		)
+	)
+)

pcb/pcb/fp-lib-table

@@ -0,0 +1,4 @@
+(fp_lib_table
+  (version 7)
+  (lib (name "Library")(type "KiCad")(uri "${KIPRJMOD}/Library.pretty")(options "")(descr ""))
+)

pcb/pcb/led7seg.kicad_sch

@@ -0,0 +1,8 @@
+(kicad_sch
+	(version 20231120)
+	(generator "eeschema")
+	(generator_version "8.0")
+	(uuid "2fccfb2b-acbf-4905-99d0-b0f4428b7e5a")
+	(paper "A4")
+	(lib_symbols)
+)

pcb/pcb/pcb.kicad_pro

@@ -0,0 +1,616 @@
+{
+  "board": {
+    "3dviewports": [],
+    "design_settings": {
+      "defaults": {
+        "apply_defaults_to_fp_fields": false,
+        "apply_defaults_to_fp_shapes": false,
+        "apply_defaults_to_fp_text": false,
+        "board_outline_line_width": 0.05,
+        "copper_line_width": 0.2,
+        "copper_text_italic": false,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "copper_text_upright": false,
+        "courtyard_line_width": 0.05,
+        "dimension_precision": 4,
+        "dimension_units": 3,
+        "dimensions": {
+          "arrow_length": 1270000,
+          "extension_offset": 500000,
+          "keep_text_aligned": true,
+          "suppress_zeroes": false,
+          "text_position": 0,
+          "units_format": 1
+        },
+        "fab_line_width": 0.1,
+        "fab_text_italic": false,
+        "fab_text_size_h": 1.0,
+        "fab_text_size_v": 1.0,
+        "fab_text_thickness": 0.15,
+        "fab_text_upright": false,
+        "other_line_width": 0.1,
+        "other_text_italic": false,
+        "other_text_size_h": 1.0,
+        "other_text_size_v": 1.0,
+        "other_text_thickness": 0.15,
+        "other_text_upright": false,
+        "pads": {
+          "drill": 0.0,
+          "height": 0.6,
+          "width": 1.95
+        },
+        "silk_line_width": 0.1,
+        "silk_text_italic": false,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.1,
+        "silk_text_upright": false,
+        "zones": {
+          "min_clearance": 0.0
+        }
+      },
+      "diff_pair_dimensions": [
+        {
+          "gap": 0.0,
+          "via_gap": 0.0,
+          "width": 0.0
+        }
+      ],
+      "drc_exclusions": [],
+      "meta": {
+        "version": 2
+      },
+      "rule_severities": {
+        "annular_width": "error",
+        "clearance": "error",
+        "connection_width": "warning",
+        "copper_edge_clearance": "error",
+        "copper_sliver": "warning",
+        "courtyards_overlap": "error",
+        "diff_pair_gap_out_of_range": "error",
+        "diff_pair_uncoupled_length_too_long": "error",
+        "drill_out_of_range": "error",
+        "duplicate_footprints": "warning",
+        "extra_footprint": "warning",
+        "footprint": "error",
+        "footprint_symbol_mismatch": "warning",
+        "footprint_type_mismatch": "ignore",
+        "hole_clearance": "error",
+        "hole_near_hole": "error",
+        "holes_co_located": "warning",
+        "invalid_outline": "error",
+        "isolated_copper": "warning",
+        "item_on_disabled_layer": "error",
+        "items_not_allowed": "error",
+        "length_out_of_range": "error",
+        "lib_footprint_issues": "warning",
+        "lib_footprint_mismatch": "warning",
+        "malformed_courtyard": "error",
+        "microvia_drill_out_of_range": "error",
+        "missing_courtyard": "ignore",
+        "missing_footprint": "warning",
+        "net_conflict": "warning",
+        "npth_inside_courtyard": "ignore",
+        "padstack": "warning",
+        "pth_inside_courtyard": "ignore",
+        "shorting_items": "error",
+        "silk_edge_clearance": "warning",
+        "silk_over_copper": "warning",
+        "silk_overlap": "warning",
+        "skew_out_of_range": "error",
+        "solder_mask_bridge": "error",
+        "starved_thermal": "error",
+        "text_height": "warning",
+        "text_thickness": "warning",
+        "through_hole_pad_without_hole": "error",
+        "too_many_vias": "error",
+        "track_dangling": "warning",
+        "track_width": "error",
+        "tracks_crossing": "error",
+        "unconnected_items": "error",
+        "unresolved_variable": "error",
+        "via_dangling": "warning",
+        "zones_intersect": "error"
+      },
+      "rules": {
+        "max_error": 0.005,
+        "min_clearance": 0.0,
+        "min_connection": 0.0,
+        "min_copper_edge_clearance": 0.0,
+        "min_hole_clearance": 0.0,
+        "min_hole_to_hole": 0.25,
+        "min_microvia_diameter": 0.2,
+        "min_microvia_drill": 0.1,
+        "min_resolved_spokes": 2,
+        "min_silk_clearance": 0.0,
+        "min_text_height": 0.8,
+        "min_text_thickness": 0.08,
+        "min_through_hole_diameter": 0.3,
+        "min_track_width": 0.0,
+        "min_via_annular_width": 0.1,
+        "min_via_diameter": 0.5,
+        "solder_mask_to_copper_clearance": 0.0,
+        "use_height_for_length_calcs": true
+      },
+      "teardrop_options": [
+        {
+          "td_onpadsmd": true,
+          "td_onroundshapesonly": false,
+          "td_ontrackend": false,
+          "td_onviapad": true
+        }
+      ],
+      "teardrop_parameters": [
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_round_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_rect_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_track_end",
+          "td_width_to_size_filter_ratio": 0.9
+        }
+      ],
+      "track_widths": [
+        0.0,
+        0.25,
+        0.3,
+        0.4
+      ],
+      "tuning_pattern_settings": {
+        "diff_pair_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 1.0
+        },
+        "diff_pair_skew_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        },
+        "single_track_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        }
+      },
+      "via_dimensions": [
+        {
+          "diameter": 0.0,
+          "drill": 0.0
+        },
+        {
+          "diameter": 1.4,
+          "drill": 0.8
+        }
+      ],
+      "zones_allow_external_fillets": false
+    },
+    "ipc2581": {
+      "dist": "",
+      "distpn": "",
+      "internal_id": "",
+      "mfg": "",
+      "mpn": ""
+    },
+    "layer_presets": [],
+    "viewports": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        1,
+        0,
+        1,
+        2
+      ],
+      [
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        2,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        1,
+        1,
+        1,
+        1,
+        1,
+        0,
+        1,
+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
+        0,
+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        0,
+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "conflicting_netclasses": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "endpoint_off_grid": "warning",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "missing_bidi_pin": "warning",
+      "missing_input_pin": "warning",
+      "missing_power_pin": "error",
+      "missing_unit": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "simulation_model_issue": "ignore",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "pcb.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.2,
+        "via_diameter": 0.6,
+        "via_drill": 0.3,
+        "wire_width": 6
+      }
+    ],
+    "meta": {
+      "version": 3
+    },
+    "net_colors": null,
+    "netclass_assignments": null,
+    "netclass_patterns": []
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "plot": "/mnt/kuebel/TEMP/spaceapibox/",
+      "pos_files": "",
+      "specctra_dsn": "",
+      "step": "",
+      "svg": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "annotate_start_num": 0,
+    "bom_export_filename": "",
+    "bom_fmt_presets": [],
+    "bom_fmt_settings": {
+      "field_delimiter": ",",
+      "keep_line_breaks": false,
+      "keep_tabs": false,
+      "name": "CSV",
+      "ref_delimiter": ",",
+      "ref_range_delimiter": "",
+      "string_delimiter": "\""
+    },
+    "bom_presets": [],
+    "bom_settings": {
+      "exclude_dnp": false,
+      "fields_ordered": [
+        {
+          "group_by": false,
+          "label": "Reference",
+          "name": "Reference",
+          "show": true
+        },
+        {
+          "group_by": true,
+          "label": "Value",
+          "name": "Value",
+          "show": true
+        },
+        {
+          "group_by": false,
+          "label": "Datasheet",
+          "name": "Datasheet",
+          "show": true
+        },
+        {
+          "group_by": false,
+          "label": "Footprint",
+          "name": "Footprint",
+          "show": true
+        },
+        {
+          "group_by": false,
+          "label": "Qty",
+          "name": "${QUANTITY}",
+          "show": true
+        },
+        {
+          "group_by": true,
+          "label": "DNP",
+          "name": "${DNP}",
+          "show": true
+        }
+      ],
+      "filter_string": "",
+      "group_symbols": true,
+      "name": "Grouped By Value",
+      "sort_asc": true,
+      "sort_field": "Reference"
+    },
+    "connection_grid_size": 50.0,
+    "drawing": {
+      "dashed_lines_dash_length_ratio": 12.0,
+      "dashed_lines_gap_length_ratio": 3.0,
+      "default_line_thickness": 6.0,
+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
+      "intersheets_ref_suffix": "",
+      "junction_size_choice": 3,
+      "label_size_ratio": 0.375,
+      "operating_point_overlay_i_precision": 3,
+      "operating_point_overlay_i_range": "~A",
+      "operating_point_overlay_v_precision": 3,
+      "operating_point_overlay_v_range": "~V",
+      "overbar_offset_ratio": 1.23,
+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_current_sheet_as_root": false,
+    "spice_external_command": "spice \"%I\"",
+    "spice_model_current_sheet_as_root": true,
+    "spice_save_all_currents": false,
+    "spice_save_all_dissipations": false,
+    "spice_save_all_voltages": false,
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [
+    [
+      "f8c1fb25-25af-44db-b993-115b96db9374",
+      "Root"
+    ],
+    [
+      "6de808a1-e841-48bc-9eb8-aa01e255a260",
+      "panel"
+    ],
+    [
+      "7204a722-4117-47e2-a892-20e60790c5e5",
+      "esp"
+    ],
+    [
+      "ac6384a0-edb9-4403-930f-8cc525113c97",
+      "led7seg"
+    ]
+  ],
+  "text_variables": {}
+}

pcb/pcb/pcb.kicad_sch

@@ -0,0 +1,147 @@
+(kicad_sch
+	(version 20231120)
+	(generator "eeschema")
+	(generator_version "8.0")
+	(uuid "f8c1fb25-25af-44db-b993-115b96db9374")
+	(paper "A4")
+	(lib_symbols)
+	(polyline
+		(pts
+			(xy 127 127) (xy 152.4 127)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "2ee28525-c79b-4e94-8dbe-567019fcb4b3")
+	)
+	(polyline
+		(pts
+			(xy 127 63.5) (xy 152.4 63.5)
+		)
+		(stroke
+			(width 0)
+			(type default)
+		)
+		(uuid "4bbd0eb7-be89-45fb-aeea-0a98a6c13ce2")
+	)
+	(sheet
+		(at 38.1 38.1)
+		(size 88.9 50.8)
+		(fields_autoplaced yes)
+		(stroke
+			(width 0.1524)
+			(type solid)
+		)
+		(fill
+			(color 0 0 0 0.0000)
+		)
+		(uuid "6de808a1-e841-48bc-9eb8-aa01e255a260")
+		(property "Sheetname" "panel"
+			(at 38.1 37.3884 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left bottom)
+			)
+		)
+		(property "Sheetfile" "panel.kicad_sch"
+			(at 38.1 89.4846 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left top)
+			)
+		)
+		(instances
+			(project "pcb"
+				(path "/f8c1fb25-25af-44db-b993-115b96db9374"
+					(page "2")
+				)
+			)
+		)
+	)
+	(sheet
+		(at 152.4 38.1)
+		(size 114.3 114.3)
+		(fields_autoplaced yes)
+		(stroke
+			(width 0.1524)
+			(type solid)
+		)
+		(fill
+			(color 0 0 0 0.0000)
+		)
+		(uuid "7204a722-4117-47e2-a892-20e60790c5e5")
+		(property "Sheetname" "esp"
+			(at 152.4 37.3884 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left bottom)
+			)
+		)
+		(property "Sheetfile" "esp.kicad_sch"
+			(at 152.4 152.9846 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left top)
+			)
+		)
+		(instances
+			(project "pcb"
+				(path "/f8c1fb25-25af-44db-b993-115b96db9374"
+					(page "3")
+				)
+			)
+		)
+	)
+	(sheet
+		(at 38.1 101.6)
+		(size 88.9 50.8)
+		(fields_autoplaced yes)
+		(stroke
+			(width 0.1524)
+			(type solid)
+		)
+		(fill
+			(color 0 0 0 0.0000)
+		)
+		(uuid "ac6384a0-edb9-4403-930f-8cc525113c97")
+		(property "Sheetname" "led7seg"
+			(at 38.1 100.8884 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left bottom)
+			)
+		)
+		(property "Sheetfile" "led7seg.kicad_sch"
+			(at 38.1 152.9846 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify left top)
+			)
+		)
+		(instances
+			(project "pcb"
+				(path "/f8c1fb25-25af-44db-b993-115b96db9374"
+					(page "4")
+				)
+			)
+		)
+	)
+	(sheet_instances
+		(path "/"
+			(page "1")
+		)
+	)
+)

pcb/pcb/sym-lib-table

@@ -0,0 +1,4 @@
+(sym_lib_table
+  (version 7)
+  (lib (name "Library")(type "KiCad")(uri "${KIPRJMOD}/Library.kicad_sym")(options "")(descr ""))
+)