Introduction - If you have any usage issues, please Google them yourself
An RS232 port controls a TSA5512 via a PIC16F84
This allows a TV tuner to be scanned across its full range.
4MHz crystal for the PIC, the tuner has it s own internal crystal. Use a MAX232 for level shifting.
SCL RB6
SDA RB5
Din RA1
Dout RA0