I have a very weak understanding of electronics.
I am attempting to use an Arduino nano and an Arduino Bluetooth module to turn on and off an electromagnet with my phone. I don't know how, considering the electromagnet needs 9 volts and I know the Arduino can't deliver that. What other components do I need in order to supply 9 volts to a load? If anyone could direct me to any tutorial already done on this, that would be awesome.
Thank you for your help!
