Hello
I have a 12v magnetic lock. Heres the link:
I want one of the pins on my arduino to control this lock to either on/off. The magnetic lock needs a working voltage of 12vdc and current draw of 0.11-0.15 A
I know the voltage coming off the arduino is 5VDC but how much is the current? What amount of currrent does the 5VDC relay need to be? Is this even gonna work, any other methods?
Are you going to have this arranged so the 12 volt power supply for the lock will also power the Arduino? If so, then get a relay board that is powered by the same 12 volts. The relay board can be triggered by the 5 volt pin of the Arduino and all will work fine if all grounds are connected together.
This will work just fine for you as long as you can get them all connected and the Arduino programmed the way you want.
Paul
Hi Paul,
Thanks for your reply. I was planning on using the 12v DC arduino power supply cable to power the arduino and then from the arduino use one of the pins to power the maglock. This was convenient for me as I already have the power supply cable for the arduino.
DO NOT USE ONE OF THE ARDUINO PINS TO POWER THE LOCK!
Run a separate wire from the 12 volt supply to the lock through the relay board. Read my response again!
Paul