CM3-Home

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
dtoverlay=pwm-2chan,pin=40,func=4,pin2=41,func2=4

How to try the audio out

Install omxpayer by typing:

sudo apt-get update
sudo apt-get install omxplayer

Download this two audio files:

wget https://www.acmesystems.it/cm3home/CM3-HOME_audio/speaker_test.m4a

Launch it:

omxplayer -o local speaker_test.m4a

eShop

EUR 130.00


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

  • Optional parts non included to order separately:
    • Raspberry Compute Module 3L (Product # CM3L)
    • Wifi module (Product # WIFI-2) and antenna (Product # AN-WIFI-01)
    • MicroSD (Product # MICROSD8G-E)
    • Case (Product # CM3-HOME-CASE)
| Product description || CM3-Home catalog |

Sergio Tanzilli
System designer and Acme co-founder
Personal email: tanzilli@acmesystems.it
Webpages: https://www.acmesystems.it - http://www.tanzolab.it - http://www.tanzilli.com
Github repositories: https://github.com/tanzilli and https://github.com/acmesystems