I was wondering how to hook up the speed-o-meter, tachometer ect to my computer. I can do the programming myself. I just need help with the hardware, and possibly an example on how to communicate with the device via qbasic.
Both the tach and speedometer are likely going to be PWM (for speedometer) or just a sine/square wave of varying frequency (for the tach). The easiest thing to do would be to build a small microcontroller based circuit (take your pick of easy micros to work with...ie. BasicSTAMP) to measure the actual frequency and then send that in a data stream to the PCs serial port. That will be easy to read in QBasic.
Digital dash (For PC)
Posted - Apr 23 2007 : 01:42:29 AM
