Arduino 5v Relay Circuit Diagram. The following picture shows the internal circuit diagram of the 5v dual channel relay module. 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.
Relay arduino circuit diagram with load. Relay arduino code program 1. In the transmitter lora circuit 5 push buttons are connected with arduino digital pin d2 d3 d4 d5 d6 whenever we press any push button the signal sent to receiving the lora module to turn on or off the respective relay.
5v dual channel relay module internal circuit diagram.
The arduino can be programmed to turn on the relay when a certain event occurs for example when the temperature of a thermistor gets higher than 30 c. Relay arduino code program 1. As mentioned earlier by interfacing arduino with 5v relay module we intend to operate an ac load like lamp. We simply need a high signal to the transistor base.
