Arduino 5v Relay Module Circuit Diagram. So connect the 5v and the ground of the arduino with the 5v and the ground of the relay module. 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.
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. In the transmitter lora circuit we have connected the transmitter lora module with arduino nano as per the circuit diagram. Internal circuit diagram for single channel relay module.
The connections for connecting the relay module with arduino are very simple.
The working of the project is based on the functioning of the relay and the ability of arduino to control the relay. The following picture shows the internal circuit diagram of the 5v dual channel relay module. Since the arduino operates at 5v it can t control these higher voltage devices directly but you can use a 5v relay to switch the 120 240v current and use the arduino to control the relay. Circuit diagram and working.
