Electronic circuit

[Michael Madaris]

I need to make a circuit to test our ballistics equipment for calibration.

What I would need, is to trigger a one shot pulse to simulate a pressure spike (like a one peak sine wave), and then immediatly get (2) more pulses (square pulses).

The first, single pulse would need to be selectable in stops of 2,3,4,5,6, and 7 volts with a duration of approx. 1 millisecond.  When this bell curve pulse dropped to zero, I would need (2) square pulses of approx. 1 millisecond in duration, of 8-12 VDC, and the peaks would be 3 milliseconds apart.

The first pulse would simulate the charge from a piezo electric pressure transducer, and the (2) pulses triggered after the first pulse would simulate the output from infrared photo electric screens as if a projectile had triggered them as it went by.

I could have this device calibrated on a periodic basis, and use it to calibrate our ballistics test equipment.

Would I try to do this with 555 circuitry, or would it be better using a PICaxe type of circuit?

Any suggestions as to how to go about doing this?

Thanks.

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