NodeMCU v2 – Lua based ESP8266 development kit

I recently bought one of the NodeMCU v2 - Lua based ESP8266 development kit, here we will take a look at it The Development Kit based...

Wemos and MQ-9 gas sensor

The MQ-9 Analog Gas Sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor can be used to detect different gases containing...