Welcome Friends, today I’m going to show you how you can make a Programmable On-Off-on-off Timer Switch Without RTC Using Arduino, you can control any ac/dc appliance using a relay. I have used a 16×2 LCD display for monitoring and on time and off time, on time will be saved in EEPROM. So let’s do it
Componenet Required
Arduino Uno/Nano or Atmega328P IC
28 pin IC Base
16×2 LCD Display
Push Button Swith (4 pcs)
5V Relay (1 pcs)
BC547 Transistor (1 pcs)
1k Resistor (2 pcs)
330ohm Resistor(1 pcs)
22pf and 16Mhz crystal
encloser,zero PCB, some wire.
Connection
Download Circuit Diagram And Code
Video Tutorial
