“Hello everyone.
This time I will share my way of making a digital tachometer. It works great and can easily compete with a commercial version. On top of all, I wanted to avoid the complexity of adding a battery to the system. So I decided to make the tachometer power bank compatible.
Supplies:
- Arduino Pro Mini
- 1306 OLED display
- 3144 Hall effect sensor
- Small magnets
- micro USB hub
- wires, solder etc.”