---
product_id: 11410449
title: "Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685"
brand: "adafruit"
price: "₨34"
currency: SCR
in_stock: false
reviews_count: 3
url: https://www.desertcart.sc/products/11410449-adafruit-16-channel-12-bit-pwm-servo-driver-i-c
store_origin: SC
region: Seychelles
---

# I²C interface with 2-pin control 16 PWM channels Built-in free-running clock Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685

**Brand:** adafruit
**Price:** ₨34
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Unlock 16 channels of seamless PWM magic with just 2 pins!

## Quick Answers

- **What is this?** Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 by adafruit
- **How much does it cost?** ₨34 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/11410449-adafruit-16-channel-12-bit-pwm-servo-driver-i-c)

## Best For

- adafruit enthusiasts

## Why This Product

- Trusted adafruit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust & Reliable:** Reverse polarity protection ensures your setup stays safe and sound.
- • **Scalable to Insanity:** Chain up to 62 drivers for a staggering 992 PWM outputs—future-proof your projects.
- • **Compact & Lightweight:** Sleek 2.5" x 1" board weighing just 5.5 grams—perfect for space-conscious builds.
- • **Free-Running PWM Clock:** No continuous signal needed; built-in clock keeps your outputs running autonomously.
- • **Effortless Multi-Channel Control:** Manage 16 independent PWM outputs with just two microcontroller pins—simplicity meets power.

## Overview

The Adafruit 16-Channel 12-bit PWM/Servo Driver (PCA9685) is a compact, I²C-controlled board that enables precise PWM output management without continuous microcontroller intervention. Featuring a built-in clock, reverse polarity protection, and the ability to chain up to 62 units for nearly 1,000 outputs, it’s ideal for advanced robotics, LED lighting, and servo control projects.

## Description

desertcart.com: Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 : Industrial & Scientific

Review: Five Stars - My favorite PWM driver, so easy to use with Adafruits sweet support libraries.
Review: Four Stars - Worked as expected!

## Features

- It is PWM drive with I²C control with built-in clock. This is unlike the TLC5940 family, you don't need to send signal continuously by connecting your micro controller, it works completely free!
- When we saw this chip, we immediately noticed how great it would be. Control 16 free running PWM outputs using just two pins! You can even adjust 62 break chains to control the 992 PWM output (we really want to see as it will be amazing)
- Reverse polarity protection at terminal block entry
- Dimensions (no head or terminal block) 2.5" x 1" x 0.1" (62.5mm x 25.4mm x 3mm) Weight (no nozzle or terminal block): 5.5 grams Weight (3 x 4 with nozzle and terminal block): 9 grams
- In addition to fully tested and assembled breakage, this product comes with 4 3x4 male flat heads (for servo/LED plugs), a 2-pin terminal block (for power) and a 6-pin 0.1-inch head (for installation on breadboard). A little light soldering will be required to mount and customize the panel by fitting the desired nozzles, but it is a 15 minute task even beginners can do. You can also use right-angled 3x4 nozzles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #672,696 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #320 in Motor Drives |
| Customer Reviews | 4.8 out of 5 stars 46 Reviews |

## Product Details

- **Brand:** Adafruit
- **Compatible Devices:** Electronic Notepad
- **RAM Memory Technology:** DDR4
- **Compatible Processors:** Raspberry Pi 4B, Raspberry Pi 5
- **Memory Clock Speed:** 1.6 KHz
- **Platform:** FLY
- **Model Name:** ADA815
- **Memory Storage Capacity:** 8 GB
- **Main Power Connector Type:** 24-Pin
- **Graphics Card Interface:** Integrated

## Images

![Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 - Image 1](https://m.media-amazon.com/images/I/71Xscl4U3WL.jpg)
![Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 - Image 2](https://m.media-amazon.com/images/I/61Fk3Ah91GL.jpg)
![Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 - Image 3](https://m.media-amazon.com/images/I/71VADRjbsSL.jpg)
![Adafruit 16-Channel 12-bit PWM/Servo Driver - I�C Interface - PCA9685 - Image 4](https://m.media-amazon.com/images/I/71D2gPJGOAL.jpg)

## Questions & Answers

**Q: Is this the 2015 revision with the stronger polarity-protection transistor? The official page shows this revision.**
A: Hi Marco Velasquez,This servo driver is product ID# 815 with reverse polarity protection on the terminal block input.

**Q: Does it come with a manual or some information for configure it and how to set the pwm by I2C??**
A: There is no manual included. There is infomation available on the manufacturers website on how to connect it to an Arduino microcontroller module or to a Raspberry Pi module. Go to www.adafruit.com an search for model # 815, there will be tutorials and documentation available.

**Q: Can this operate small solenoids?**
A: No, not without additional circuitry. Try looking here: https://www.adafruit.com/?q=solenoid&p=1

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by G***T on November 17, 2017*

My favorite PWM driver, so easy to use with Adafruits sweet support libraries.

### ⭐⭐⭐⭐ Four Stars
*by M***. on October 5, 2015*

Worked as expected!

### ⭐⭐⭐⭐ It works but holes aren't standard M3 size!
*by H***P on November 4, 2014*

UPDATE [NOV 11/2014] WARNING: THE FOLLOWING EXPLANATION CAN MAKE YOU FEEL CHICKEN SKIN!! I've drilled the holes to expand the diameter 1 to 1.5 mm!! Just put the board through the light, you'll see a clearance around the holes! This is like a space to prevent screws from damaging the PCB layers. I've drilled the holes carefully and now I can use M3 1/4 inch screws to hold the device! I tested the whole PWM output pins and fortunately everything gone well! Why don't you Adafruit guys didn't prevent this situation to avoid us, your customers from doing this?? Or just tell what size the holes is (M2.5, M2 ??) UPDATE [NOV 10/2014] After testing my project and preparing for assembly, I get frustrated when I used some spacers to mount on the controller but they didn't fixed the holes!! I'm now looking for something to replace the spacers to hold it steady! Went to the adafruit's web page and found nothing about the size of the holes! This servo controller does its job! I used my pcDuino v2 to post the commands through the TWI (I2C) directly to the registers of the PCA9685. I've activated the AI bit in REG_MODE1 to allow continuous writing on the ON/OFF L/H LED/SERVO registers, so I can send the four bytes for a single channel in one I2C transaction! I also configured the PRE-SCALE register to set the frequency I needed. This is done by first putting it in SLEEP MODE. Once configured, I just needed to send the timing values to allow the unit to mux the PWM independent values to every single channel and adjust the duty cycles. Unfortunately, pcDuino v2 just work in between the standard and fast mode on the I2C bus (200 kHz), but it works just fine. It effectively frees the MCU from holding the PWM signal on your servos so you can use those extra CPU cycles on whatever processing you need. There is just one complain regarding its linearity. I used a linear regression to map step values (0 - 4095) to time values (more appropriate for servo timing). I noticed some lag on the OFF time for the pulse while increasing the duty cycle. I needed to make some adjustments by hand to fix this behavior. Anyway, it made my day and now have a very nice servo controller!

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-07-18*