Onyehn 16 Channel PWM Servo Motor Driver PCA9685 IIC Module 12-Bit for Arduino Robot or Raspberry pi(Pack of 3pcs)

The I2C 16 channel PWM module is inexpensive and works perfectly.

Ich habe noch nie so eine hohe Verarbeitungsqualität bei einem Produkt gesehen.~ Mazzee

I bought these as a project for a 3D printed arm to run all of the servo motors and they work great with my Arduino.

External power supply hook up doesn't work. I have 2 packs of 3 for a total of 6. Not a single one will work with external power hooked up properly. The only way to get them to work is to use the V+ pin that's in line with the sda/scl pins. I have tried various power supplies, ranging from 5V 4A, to 6.2V 2A. And nothing works on the external power supply ports. They are all equipped with a 10v 1000uf capacitor stock. And there are no instructions. All online sources of information on these twll me im doing nothing wrong. Any aggressions would be helpful.

This works great. I am using it as a 16 channel "DAC" with a Resistor/Capacitor on the output. The circuit I show is a little slow in response (Can't use for audio applications) but it works great for general control applications with very little ripple. However, be careful with the OE (Output Enable) line of this module. It is an Active Low input and is not labeled as such on the board. I had to fiddle with it for a while before finally looking at the datasheet for the PCA9685.This module is a great alternative to using a DAC in your circuit. Just do a search for 12 bit DAC and see the price difference. You get a lot of bang for the buck with PWM outputs as DAC's.