Audio section

The CM3-Home uses an audio section electrically similar to the Raspberry Pi 3 but using different GPIO lines. This article explains how to configure your Raspbian distribution to be compatible with this hardware. Making a little change on the config.txt file all the other behaviour is the same as with Raspberry Pi 3.

config.txt configuration

Add this two lines on config.txt file the reboot:

# Set the CM3-Home audio lines

How to try the audio out

Install omxpayer by typing:

sudo apt-get update
sudo apt-get install omxplayer

Download this two audio files:


Launch it:

omxplayer -o local speaker_test.m4a


EUR 140.00

CM3-HOME-B - Home automation carrier board for Raspberry CM3L module

Motherboard designed to provide a reliable Home Automation solution based on Raspberry Pi CM3L industrial module

Out of stock until november 2019

  • Parts to order separately:
  • NOT INCLUDED Raspberry Compute Module 3L (Product # CM3L)
  • NOT INCLUDED Wifi module (Product # WIFI-2) and antenna (Product # AN-WIFI-01)
  • NOT INCLUDED MicroSD (Product # MICROSD8G-E)
  • NOT INCLUDED Case (Product # CM3-HOME-CASE)
| Product description || CM3-Home catalog |

Sergio Tanzilli
System designer and Acme co-founder
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