58 lines
No EOL
2.3 KiB
Markdown
58 lines
No EOL
2.3 KiB
Markdown
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Remote control the CCC Basel video projector via MQTT ( -> ESP8266 -> RS232 -> projector ).
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This repo contains
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* A [PlatformIO][pio] project for an ESP8266 firmware which connects to an MQTT server and subscribes to certain command topics
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* A [KiCad][kicad] project for an adapter and power supply PCB which connects an ESP-01 to a MAX3232 board and provides power to both from a USB Micro-B socket.
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## ESP8266 Firmware
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### Building
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Edit esp/src/main.cpp and set the configuration (WiFi credentials, MQTT broker & topic)!
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For Sanyo Z4:
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```
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cd esp
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pio run -e sanyoz4 -t upload --upload-port /dev/tty<X>
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```
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For Benq X3000i
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```
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cd esp
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pio run -e benqx3000i -t upload --upload-port /dev/tty<X>
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```
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## PCB
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### BOM
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* ESP-01
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* A MAX3232 + D-Sub 9 connector board
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* The adapter PCB is designed for [this specific MAX3232-Board from AliExpress][max3232]
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* 1x 10k 0805 SMD Resistor
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* 1x 2x2 2.54mm pin header
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* 1x 2x4 2.54mm socket header
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* 1x 1x4 2.54mm socket header
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* 2x 2.54mm jumpers
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* USB Micro-B socket
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* SOT-223 3v3 voltage regulator
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The USB socket footprint in this PCB is modified to use circular holes, because our PCB mill can't mill oval holes that small. If your chosen USB socket has thru-hole legs wider than 1mm, you may want to replace the footprint with another one from KiCad's library.
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### Assembly
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1. The copper side (bottom) faces the MAX3232 board, with the 1x4 socket header plugged into the matching in header on the MAX3232 board.
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1. The 2x4 socket header faces the other direction, this is where the ESP-01 is plugged into
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1. The 2x2 in header can face either direction (if facing down, check beforehand whether there's enough space to the MAX3232 board
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1. The jumpers go next to each other on the 2x2 pin header. Depending on their orientation, Rx and Tx can be swapped if necessary.
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[pio]: https://platformio.org/
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[kicad]: https://www.kicad.org/
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[max3232]: https://de.aliexpress.com/item/1005001548466845.html?spm=a2g0o.productlist.0.0.29142932HtTivS&algo_pvid=37640f61-ffd9-40fb-b468-f261709c162b&algo_exp_id=37640f61-ffd9-40fb-b468-f261709c162b-1&pdp_ext_f=%7B%22sku_id%22%3A%2212000016543520800%22%7D&pdp_npi=2%40dis%21CHF%21%210.41%21%21%21%21%21%402101d8b516564877891056410e1251%2112000016543520800%21sea |