Automatic water pump
While the Water Alarm built a few days ago was still working great, having to…
Connected thermometer
Thingspeak is a very interesting site. It collects (and display) a lot of data from…
Water level alarm
The water outlet for the air conditioner was broken recently. The water get nowhere to…
OLED message board
The low cost, small 3.3cm OLED display is fun to play with. The original one…