I am wondering if anyone out there has tried replacing a VFD display with a modern LED or OLED display. I would like to hack my factory car stereo (Clarion) which uses a VFD with an Arduino and an LED display.
I've already taken apart the head unit and removed the VFD. The following inputs/outputs are silk screened on the VFD electronics:
VFD-GND VFD+32V F+6V ILL+ ILL- SYS+5V VFD-CS VFD-CP VFD-DA V/K-RESET KEY-DI KEY-CE KEY-CL KEY-DO KEY-DI VOL1-L VOL2-L TONE-SW CD-LOAD CD-EJECT POWER-SW VOL1-R VOL2-R U-GND
A lot of the signals are self-explanatory but the VFD ones I'm not totally familiar with. I would like to reverse engineer the signals coming out of the radio and have the Arduino translate the signals and output them to an LED display. I'm unsure what kind of signals the VFD uses for communication. Anybody have a suggestion where to start?