A simple, reliable and energy efficient module to facilitate touchless operation.
Use an Arduino Nano to make a simple stopwatch!
Summary of the project I was needing to run a 6 amp x 12v fan motor over a time during the day for a solar power system in a ship container.
My RasPi device reminds me what's the time by making an announcement every 20 minutes.
The router worked hard every day without a break. It's quite hard to turn off the power every day, so I made a device to let it have a rest.