DIYRoboticArm
HUAREW PCA9685 16-Channel PWM Driver (2-Pack)
Controllers & Servo Drivers

HUAREW PCA9685 16-Channel PWM Driver (2-Pack)

by HUAREW

★ Best for: Large or dual-arm builds

Two PCA9685 boards — keep a spare or chain them for 32 channels.

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Why we recommend it

A two-pack of the PCA9685 driver, which is genuinely useful: chain the two boards over I²C and you have 32 PWM channels for a large or dual arm, or simply keep the second as a spare (the screw terminals and headers are the parts most likely to need re-soldering on a heavily-used board). Same 12-bit, 16-channel design as the single boards, compatible with Arduino and Raspberry Pi.

At a glance

Quantity2 boards
Channels16 each (chainable)
Resolution12-bit PWM
InterfaceI²C

HUAREW PCA9685 16-Channel PWM Driver (2-Pack)

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Guides that use this

Code & electronics

Arduino Robotic Arm Code: Sketches, Library & Examples

Copy-paste Arduino robotic arm code: Servo library setup, sweep tests, potentiometer and serial control, record/playback, smooth motion, and PCA9685.

◆ Intermediate Read →
Parts & hardware

How to Power a Robotic Arm (Without Frying Your Board)

Pick the right robotic arm power supply, size current from servo stall draw, wire a common ground, and stop brownouts that reset your Arduino or Pi.

◆ Intermediate Read →

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HUAREW PCA9685 16-Channel PWM Driver (2-Pack)

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