More fun with DTMF tones and my #rc2014.
This time I’m using the AY-3-8910 card with @quazarsamcoupe’s ZXTT clock add-on to generate DTMF tones that my new DTMF card is successfully decoding.
The LEDs on the decoder card at the front show the binary codes for the decoded tones.
Write up coming soon.
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