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...
Wemos mini shields
In a previous post I looked at the Wemos Mini - http://www.esp8266learning.com/wemos-d1-mini-hardware.php. I also noticed that there were a number of shields that you can...