Arduino 5v Relay Module Circuit Diagram. Internal circuit diagram for single channel relay module. The circuit on the pcb is quite simple.
Relay modules like this one are commonly used to drive mains loads from a microcontroller like the arduino or a sensor. The connections for connecting the relay module with arduino are very simple. Circuit diagram and explanation.
The working of the project is based on the functioning of the relay and the ability of arduino to control the relay.
In the transmitter lora circuit we have connected the transmitter lora module with arduino nano as per the circuit diagram. As mentioned earlier by interfacing arduino with 5v relay module we intend to operate an ac load like lamp. Here to turn on the relay with arduino we just need to make that arduino pin high a0 in our case where relay module is connected. In the transmitter lora circuit we have connected the transmitter lora module with arduino nano as per the circuit diagram.
