Wemos and MQ-4 gas sensor
The MQ-4 Methane Gas Sensor is a gas sensor that detects the presence of methane gas at concentrations from 200 ppm to 10,000 ppm, a range...
Stripboard breakouts for your boards
As I mentioned in the post at http://www.esp8266learning.com/nodemcu-v2-lua-based-esp8266-development-kit.php I liked the NodeMCU board but would have preferred if the headers had not been soldered rather than...