A "normal" style relay for turning a single "data" line on and off.
Perfect for Raspberry Pi or Aduino projects. You need 5V to power the relay coil. The input (IN) needs only a few milliamperes between 2.5V and 12V. You can even use the same voltage that supplies the coil.
Properties:
· Cost effective way to control larger voltages and currents.
· No soldering required
· Supports every microcontroller
· On-board transistor.
· Simple 1-wire drive. High for one, low for off.
· Mains relay.
Pin assignment (from left)
5V supply (coil requires 400mW)
GND
IN data line (TTL 3-12V)
A1 - contact 1 (normally open, applies to all models)
A2 - contact 2 (normally closed, 6-pole relay only).
COM - together
Example of a Raspberry PI relay switch that turns the relay on and off at 1 second intervals:
Wiring:
Connect the VCC to the Rpi pin 2 (5V)
Connect GND to Rpi Pin 6 (GND)
Connect IN to Rpi pin 7
Connect the ground of the circuit you want to connect to the middle screw terminal
Connect the + VE of the circuit you want to turn on (one is turned on when the relay is on, and the other is turned off when the relay is on - you choose what you want).
Perfect for simple home automation projects, this module allows your Raspberry Pi to control three independent relays. This allows you to easily control high current loads while isolating your Pi safely. All necessary driver circuits are on board, and the control is as easy as driving a GPIO pin high or low. Relays can be easily disconnected from the corresponding GPIO by removing a built-in jumper, allowing you to release unused channels for other purposes. Spacers are included to secure the module to your Pi.
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