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Engine Relay Board Hookup Guide. As gear like engines and relays require high current, microcontrollers cannot drive them.

to be able to drive them, we want unique present motorists. Motor relay board comes to the image due to these needs. Engine relay board drives engines and relays by providing adequate current. It could drive are mail order brides real? one relay and four DC motors or one motor that is stepper a time. The engine relay board eases the job of interfacing motor that is external AC products because of the ATmega32 microcontroller. This has ULN2003 motorists for high present applications like motor driving and relay driving circuits for AC unit interfacing.

You will find three sections that are main an engine relay board.

Relay Motorist

Utilising the supplied relay circuit, 230V products could be managed. This area is effective for automating the on / off.

Engine Driver

The DC engine could be managed applying this area, there was 4 driver that is ULN2003 lines for driving motors and each provides adequate present to manage the DC motor.

External Interfaces

* Terminal block (3pin) –for linking relay IN and OUT * Terminal block(7pin) – for linking 4 lines of engine, 1 for energy and 2 pins for ground

Linking the Board

* switch on the board SW1 that is using LED will glow. * Connect the slot connector to your standard port. * Shunt the jumpers in J4. * Use jumper caps to select pins that are port. First four pins (0, 1, 2&3) are relay selectors. The relay could be attached to 4 pins. * Use port pins 4,5,6&7 for engines in the near order of engine D, C, B&A. * Set the input slot pin correspondingly to make ON/OFF the relay/motor.


There was a alternative header j3 for accessing specific pins.