Improve wireless doorbell
Trandi posted a step by step guide of his DIY wireless doorbell build:
So this was the perfect pretext for a small electronics project, centred around the idea of a simple voltmeter that would notify us when the voltage goes below a safe level. This would most easily be done with a small micro controller that has an ADC.
For some reason I quickly decided that I also wanted the doorbell to count the rings, to be able to quickly see if we’ve missed anybody while away from home.
Check out the video after the break.
This entry was posted in DIY, how-to and tagged doorbell, wireless.