Hi!
I have an Smart Roadster and it´s radio is not DAB capable. I was thinking about using the case of an original radio but with Arduino internals. I have a few challenges to overcome, but I am sure I will learn on the process.
Right now, I have a tape player and I am trying to identify it´s front panel connections so I can use as a display and controls for the Arduino:
The IC is a Philips (now NXP) PCF8576CT that controls a 40 pin 8x1 LCD with some additional segments. It can be controled by I2C. From the connections, and the datasheet, I have identified that the LCD has a 4-mux interface to the IC.
The buttons are connected thru resistors so I can use 2 analog inputs to interface with the 2 halves of they keypad.
I think is quite safe to power it with 5v and start messing around. What do you think?