PiHut
Relay 4 Zero - 4-Channel Relay Board for Pi Zero
The Relay 4 Zero provides a solution for controlling low and medium current/voltage devices with your Raspberry Pi Zero (or any 40-pin Raspberry Pi...
The Relay 4 Zero provides a solution for controlling low and medium current/voltage devices with your Raspberry Pi Zero (or any 40-pin Raspberry Pi).
It's a nice solution for controlling devices that can't be directly controlled by the Raspberry Pi's digital I/Os (GPIO). The standardised pHAT form factor enables a smooth connection with Raspberry Pi.
It is a 4-channel relay shield with 2A 120V AC output and 2A 24V DC output ratings. Relay 4 Zero is designed for triggering at low voltage levels.
The relay channel 1, 2, 3, and 4 are connected with GPIO pin number 31, 33, 35, and 37 of the Raspberry Pi respectively. The channels are configurable and can be connected with other pins as well with the help of headers.
Features
- Four high-quality 3V Relays (loads up to 2A/24VDC or 2A/120VAC)
- Control up to 4 devices
- 40-pin stacking header
- LEDs for indicating the status of each relay
- Standardised pHAT shape and design
- Mounting holes provided
- Compatible with all 40-pin models of Raspberry Pi
Specifications
- Relay channels - 4
- Voltage - 3V
- AC Control Voltage - 120V @ 2A
- DC Control Voltage - 24V @ 2A
- Dimensions: 6.5 x 3 x 2 cm (Approx.)
- Weight: 100gm (Approx.)
Resources
- Example Code, Python Library and Schematic (Github)
Note: Raspberry Pi Zero not included
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- Headers
- Rows of metal pins used to plug a module into a breadboard or connect it with jumper wires. Pre-soldered headers make the module easier to use straight away without needing to solder the pins yourself.
- pHAT
- A smaller add-on board format for Raspberry Pi, similar in idea to a HAT but usually not full-sized. It matters because pHAT compatibility can affect how neatly a board stacks or fits into a Raspberry Pi project.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
Find this product in
Connectivity
Raspberry Pi
Related Tutorials
Free guides on learn.littlebird.com.au
