ESP32 with CO2-Sensor (MH-Z19B) and publish data on mydevice Cayenne
- Lolin D32 (with ESP32 4MB and WIFI) https://wiki.wemos.cc/products:d32:d32
- MH-Z19B - CO2 - Sensor https://www.winsen-sensor.com/sensors/co2-sensor/mh-z19b.html
| MH-Z19b | Lolin D32 | |
|---|---|---|
| GND | <-> | GND |
| VI V | <-> | BAT |
| RX | <-> | SDA Pin 21 |
| TX | <-> | SCL Pin 22 |
- Registration at https://accounts.mydevices.com
- Add new Device -> select "Bring your own Thing"
- Copy the credentials MQTT - Name / Password and Device-ID from Webpage into the code
- flash and run the code -> Cayonne will create channals automatically
- create a Slider on channel 4 to manipulate the transfer frequency (new Widget - Slider Controller)
- Data Analog = Acturator / Unit = Anlalog / Channel = 4 / Min = 5 / Max = 60