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Mini DIY low-powered weather sensor, ESP8266-01(ESP-01) connected with DHT22 temperature/humidity sensor, that publish data to ThingSpeak channel. ESP-01 Wifi module (or any compatible ESP8266 module) ...
You can use a Raspberry Pi RP2040 MCU to measure air quality. It acquires data from a CO2 sensor and then transmits it via an ESP8266 to ThingSpeak.
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