Arduino 12v Relay Circuit. So whenever i turn the arduino the first relay is on and its on for 3 seconds and after that it goes off and the second relay is on 3 sec similarly for third and fourth and after fourth all will be off for 3 seconds and after that all four legs will be turned on. Now connect the one end of the transister refer to data sheet to 12 adapter connect the middle pin of transistor to one of the pwm pin of arduino.
I have used a voltage regulator 7805 5 volt to fed 5v supply to the arduino circuit. Will the 10k resistor fine as base resistor. Now connect the vcc of relay to 12v adapter.
Will the 10k resistor fine as base resistor.
So whenever i turn the arduino the first relay is on and its on for 3 seconds and after that it goes off and the second relay is on 3 sec similarly for third and fourth and after fourth all will be off for 3 seconds and after that all four legs will be turned on. I connected two 12v relays in collector of one 8550. I have used a voltage regulator 7805 5 volt to fed 5v supply to the arduino circuit. Now connect the one end of the transister refer to data sheet to 12 adapter connect the middle pin of transistor to one of the pwm pin of arduino.
