Gas detector monitoring using nodemcu ESP8266 and MQ2 sensor

Components Required:

NodeMCU ESP8266 12E Board
MQ135 Gas Sensor
Breadboard
Connecting Wires

ThingSpeak is an open-source Internet of Things (IoT) application and API to store and retrieve data from things using the HTTP protocol over the Internet or via a Local Area Network.

ThingSpeark:
[ Ссылка ]

Circuit Diagram & Connections:
ESP8266 vs MQ2
VCC pin - MQ2 Vin pin
GND - GND
A0 pin - MQ2 A0 pin

Code:

[ Ссылка ]

Link:
[ Ссылка ]

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