EugenDueck / seeeduino-xiao-sound-player

Playi sound on the Seeeduino XIAO

This simple example plays 8 bit / 16k / mono sound sample in a loop on a Seeeduino XIAO.

The Seeeduino XIAO has

• one 10-bit DAC on pin 0 we will use to output sound to a speaker
• 256K flash memory we use to store sound data

I have attached a Grove speaker to the Seeeduino XIAO:

• red cable to 5V
• black cable to GND
• yellow cable to DAC

Convert WAV file to 8 bit, 16k, mono sample.h file

sox sound.wav -c1 -r16000 -tdat - \
| tail -n+3 \
| awk '
  BEGIN { printf "const PROGMEM byte samples[] = {\n" }
  { printf "  %.0f,\n", ($2+1)*128}
  END { printf "};\n"}' \
> samples.h