Main Content

Let’s make a simple arduino switch. It is very useful way to run your devices for specific time.
1. Arduino Uno
2. Dot matrix PCB
3. OLED 0.96’ Display
4. 5v Relay
5. BC547 Transistor
6. 1N4007 Diode
7. 1Kohm Resistor
8. Push buttons x3
9. Wires
10. Connector”

Link to article