Relay Module Schematic Diagram. A wiring diagram is a simplified traditional pictorial depiction of an electrical circuit. We have connected transistor base to arduino pin a0 through a 1k resistor.
5v dual channel relay module internal circuit diagram. It reveals the components of the circuit as simplified shapes and also the power and signal connections in between the tools. After all parts you collected lets go ahead to the next step.
Connect vcc to 5v of the mcu board to supply input signals.
We have connected transistor base to arduino pin a0 through a 1k resistor. Internal circuit diagram for single channel relay module. Assortment of 12 volt relay wiring diagram. Now we need to test the circuit diagram of the relay module on a breadboard.
