Let me start by saying I am not very good with electronics (yet). I am currently trying to learn. I have an old RC car that I want to control via my parallel port. After several nites of research I know how the port works and have seen examples of converting models that are simple all or nothings (100% speed forward/ back). But my remote uses a pot on each of the remote's sticks. My idea is to use the 8 data pins on the parallel port to control both the speed and directional controls at the same time. The first 4 would be for speed, and the 2nd four for direction. to replace the pot (analog) with the digital parallel port I decide give up on a true DAC, instead I think a step system would be better. the first byte (pin) would set forward/back (left/right) and the remaining three would set speed (angle). For instance: Pin 2 = 20% of power into Pot. pin 3 = 30% of power into Pot. pin 4 = 50% of power into Pot.
In this method i would be able to combine the pins to reach 100% and still have some of the controle that the original analog system had. (ranges of 0,20,30,50,70,80,100)
So here are my questions/problems at last: Is this a sound plan? Is there a better way?