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8-channel 5V relay module with optocoupler
8-channel 5V relay module with optocoupler for Arduino, Raspberry Pi, and microcontroller control of AC/DC devices.
The 8-Channel 5V Relay Module with Optocoupler is a high-capacity, safe solution for controlling AC or DC devices using low-voltage microcontroller signals. Operating at 5V control voltage, each relay can switch loads up to 10A, making it ideal for home automation, robotics, IoT, and industrial electronics projects.
Equipped with optocoupler isolation, indicator LEDs, and screw terminals, this module protects your microcontroller from voltage spikes while providing clear status monitoring. It is compatible with Arduino, Raspberry Pi, ESP32, ESP8266, and other microcontrollers, enabling reliable control of lights, fans, motors, and other appliances.

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Arduino CNC Shield
- Shield type:Â Arduino Nano
- Firmware:Â GRBL
- Modular stepper motor drivers:Â 3
- Limit switches:Â 6
- Micro-stepping:Â 1/16
- Coolant enable
- Uses removable Pololu A4988 compatible stepper drivers. (A4988, DRV8825, and others) (Not Included)
- Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
- Compact design.
- Runs on 12-36V DC. (At the moment only the Pololu DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
- Please note that this is an unassembled kit and needs soldering.
- Latest Arduino CNC Shield Version 3.51

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