LeLamp-Extend-Board

Extend board for project LeLamp, Easy and quick assembly

Overview

LeLamp Extend board consists of five main interface: the 5V Power Input, the LED Matrix, the GPIO13 and the I2C, See the figure below.

How to get it

• Proofing using the provided source files

• PCBWay

• Buy on Aliexpress bewait or 淘宝

Installation Steps

1. Setup

    git clone -b v6.12 https://github.com/HinTak/seeed-voicecard
    sudo ./install.sh
    sudo reboot

Test the microphone setup:

    # Record test
    arecord -D plughw:CARD=seeed2micvoicec,DEV=0 -r 16000 -c 1 -f S16_LE -t wav -d 5 test.wav
    
    # Playback test
    aplay -D plughw:CARD=seeed2micvoicec,DEV=0 test.wav
    
    # Access mixer settings
    alsamixer -c seeed2micvoicec

2. Install Required Packages

    sudo apt-get update
    sudo apt-get install --no-install-recommends git python3-venv libopenblas-dev

3. Check if your device is enabled

   aplay -l

The expected output should be like this:

   card 2: seeed2micvoicec [seeed2micvoicec], device 0: 1f000a4000.i2s-tlv320aic3x-hifi tlv320aic3x-hifi-0 [1f000a4000.i2s-tlv320aic3x-hifi tlv320aic3x-hifi-0]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

Afterwards, you can set up the sound level with the following command:

   alsamixer

Inside alsamixer, you can F6 to select device seeed2micvoicec. The audio setting to be edited is Speaker, PCM Play, Mono Out. This audio setting muted by default, which you can unmute by typing M.