27-Channel PWM Servo Shield

27-channel PWM servo Shield

Introduction

This is a 27-channel PWM shield that adds 27 independent PWM servo channels to Arduino or pcDuino.

Caution

There is a jumper labeled P1 on the shield. If the jumper P1 is installed, the Vin of Arduino/pcDuino will be connected to the external power supply Vin+ of the PWM shield. So please remove the jumper P1 when use it on pcDuino, as the Vin of pcDuino cannot exceed 5V.

Specification

• Number of Channels: 27
• Driving frequency: Adjustable, default 50Hz (a period of 20ms)
• Communication Interface: SPI
• Precision: 5us by default driving frequency 50Hz
• Optional External power supply: 6～24V

Schematics

• Schematics

Usage

The PWM channels are labeled on the shield as below:

Resources

• Tutorial
• Source files for the STM32 used on the shield
• PWM module Arduino libraryThe sample Arduino sketch
• Explanation of the PWM shield

How to buy

Here to buy 27-Channel PWM Shield on store