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SenseAir S8 CO2 module on an ESP8266 ESP-12E
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Philippe Z Lin (RD-TW)
Philippe Z Lin (RD-TW) first version
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README.md

esp8266-co2

SenseAir S8 CO2 module on an ESP8266 ESP-12E. The client publishes over MQTT and updates a channel on ThingSpeak.

Used in Moz-TW

Moz-TW uses ThingSpeak instead of MQTT. The hardware is a LoLin NodeMcu V3. The wiring follows,

NodeMCU    S8
      G -- GND
     D7 -- TX
     D8 -- RX
     VU -- Vcc (+5V)

Real-time CO2 value in MozTW is published on ThingSpeak.

License

ESP8266 Core is licensed under LGPL. My implementation of S8 ModBus follows MIT license.

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