Using _Marcel_’s Instrcuctable Nico made this lovely version of a Raspberry Pi Radio with a CNC router:
Thanks _Marcel_ for this instructable. It gave me the inspiration to make a retro look radio.
I modified the software a bit to allow the use of manual tone and volume control, a status indication by means of a three color LED and a different rotary encoder.
Initially I powered the power amp from a 12 V switch mode power supply and converted the 12V to 5 V by means of a DC/DC converter.
This proved to be a very noisy solution and I had to seperate 12V from 5V by using 2 PSUs. My first Power Amp was a ready made module from Aliexpress using a TDA7297 which proved not to be capable of driving 4 Ohm speakers.
I therefore had to make an alternative using a TDA2004 which works perfectly now.
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Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!