Hi I should be able to sneak in lots of extra time at home! Anyway, it is only a demo of computer control I am producing. I'm not intending to do super high quality light shows with the stuff! Anyway, I will publish full details on my web site (due to be completely redone over the xmas break) along with my report. For a 20th of the total exam marks it isn't much but I should be able to produce something decent. Most of the report will be taken up with analysis of how this is done professionally with only a small portion on the demo (which will take most of my time!). As for a career in embedded systems, I am seriously considering it. I have been programming the PIC for over two years now and I know 6502 really well (it is still in the school course work in a lot of detail). I can understand 68HC11 but I have no programming tools for it so that has gone by the board. My choice of career would be robotics, specialising in artificial intelligence, which would combine all the things I love. Tim Kerby At 09:20 11/12/97 +1300, you wrote: >What cruel teachers you have. 20 hours is enough to do some preliminary >research. In any event real servo systems have overshoot and damping >issues which you need to consider. Start with the application note on >Microchip's page which shows how to build a servo-controlled DC motor >system that accepts commands much like yours. Note that it was built >around a 17C42 which has hardware PWM. > >If you get it done in 20 hours, consider a career in embedded systems. >You are clearly a genius and will dominate the field. Best of luck > ------------------------------------------------------------------ Personal Web Pages: http://web.ukonline.co.uk/members/tim.kerby/ Email: tim.kerby@ukonline.co.uk ------------------------------------------------------------------