Engine Relay Board Hookup Guide-AT89S8253. You can find three primary parts for a engine relay board.
As gear like engines and relays need high present, microcontrollers cannot drive them. To be able to drive them, we require unique present motorists. Motor relay board comes to the photo as a result of these demands. Engine relay board drives engines and relays by providing enough present. It could drive one relay and four DC engines or one stepper motor at a time. The engine relay board eases the job of interfacing motor that is external AC products with all the ATmega32 microcontroller. This has ULN2003 motorists for high applications that are current motor driving and relay driving circuits for AC unit interfacing.