Hi all:<br><br>I've been asked to hack into a sensor that has four contacts (it acts somewhat like a hand built joystick to control a moving image). Basically, I am looking for a simple circuit that can do logic to know if any of the four contacts are closed. If they are all open, then it should send out 2.5 Volts. I can program a PIC to do this, but I was hoping there was an off the shelf solution out there somewhere. I was also thinking a timer could do the trick, but I am open to other suggestions if you have any. <br>
<br>Thank You,<br>Alison<br><br>