Mike GeniuS

I'm looking for a schematic for the si 7300 ic (other than the one in the data sheet.) I'd like to use buffered pc parallel output (i got this already) to control the (3) si 7300's i have now. A quick & dirty approach to these modules (i.e., pwr, signal inputs, driven outputs, heat sink requirements, examples, anything, actually) would be super helpful. thanx

All you need is a car alarm vibration sensor. They work great. It's a complete unit, independent of the alarm system. Just put power in, you get a signal wire output you can use for relay, led, etc. Plus, the're adjustable by turning dial. The <on> delay is adjustable. sensitivity is adjustable. AND they have a built-in Led that turns on like you want. All automotive aftermarket alarms have seperate vibration sensors. A Viper car alarm is a good example. Need more info, I can post pics.