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Home / Tooling / Servo Gripper / Build / Wiring Guide

You are viewing Servo Gripper v1.0

Wiring Guide

Assemble the Arduino controller, plug in the gripper’s motor, and connect power. The gripper uses the same controller as the Simple Conveyor.

Start Of Arduino CNC Controller

Electronics
1x Arduino Uno
1x Arduino CNC Shield V3
1x A4988 Stepper Driver (or DRV8825)

Motor
1x NEMA 17 (already mounted in the gripper)

Power
1x 12v 3A Power Supply
1x Barrel Jack Screw Terminal Adapter

Arduino Uno with the CNC shield and motor driver installed

Connect CNC Shield

Connect the CNC Shield to the Arduino UNO.

CNC shield being plugged onto the Arduino Uno

Add Motor Driver

Add the A4988 or other compatible motor driver to the first slot on the CNC shield, and be sure to have the driver installed in the correct direction.

The driver has labels for each of the pins on its underside and the CNC shield has pin labels too. Line up the Enable (EN) pin on the driver with the Enable pin on the shield.

A4988 motor driver being inserted into the first slot of the CNC shield

Connect Motor

Connect the gripper’s NEMA 17 motor to the CNC shield.

It doesn’t matter which way the motor is plugged in, as it only changes the direction the fingers move. If they close when they should open, either flip the cable or change the direction in software later on.

Motor connector location next to the first driver slot on the CNC shield

Connect Power

Using the barrel jack screw terminal adapter, wire the 12v power supply to the power terminal on the CNC shield: +V (12v) to the + terminal and -V (COM) to the – terminal.

Double check the polarity before plugging the power supply in.