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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.video for the making off:
Raspberry Pi Radio
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Uploaded program Version 2 with small bug fix, added files and operating instruction video.
The flash memory should be enough on the UNO, however the pins used will need some changes. The number of pins needed for the clock itself is 17 x Digital I/O and the SDA, SDL pins (19). The MS1and MS2 can be hardwired to 1 (+5) or 0 (gnd) as I only added these for experiments on the stepping. After initialization, the program never changes the MS1 or MS2 pins. The Uno has 20 pins available including the SDA SCL. If you dont use the lights and take out this part in the program, you can use the UNO.
Hi educ8s,I very much like the case you made. At first looks I wondered what material you used and I did not expext it to be printed as you normally see the lines. What printer are you using?Nico
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Thanks guys. I was only able to make this because of my CNC router.It was not a cheap investment but it really enables you to make good looking things.
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