Mike Mitchell (dundakitty of the forum) took an old RCA 118 radio and turned into a very classy looking MP3 player.
The radio was stripped down to it’s chassis, retaining the original tuning dial and the knobs. A couple of small speakers and a 20-watt stereo amplifier that are both controlled by a Teensy 3.6.
MP3 files of old radio broadcasts were collected and loaded onto a micro SD card. The Teensy reads the capacitance of the tuner to randomly select a directory and file on the SD card to play. The Teensy Audio Library was used to add a “hissing” sound between stations for an authentic old-time radio effect. The project is housed in a beautiful, custom-made cabinet.