Hello all,
This is my first big project, i'm going to be reading the analog outputs of the OBD1 connector in my 1994 Dodge Spirit, using the A/D on a 16f877A, and a 16 channel analog multiplexer.
Right now I have it set up, on several breadboards to read from various points on a simple voltage divider, my problem is that it will read the voltages fine and output to the LCD (4x20), but ever so often this random garbage comes up on the LCD, or weird values, and I'm wondering if its because of the breadboards?, or the connection from the microcontroller to the LCD? I've heard people say that breadboards can exhibit some capacitance and maybe that is effecting it? I dont know, I have attached some photo's so you can see what the LCD displays after first start, after 5 seconds, and after 1 minute, you can see that some of the data is misplaced and wonky!