I was wondering if the Arduino (don't know which one) would be capable of recieving a 200 millivolt, 2 millisecond single positive sine input analog pulse, and outputting 4-5 VDC pulse?
the output pulse is just high or low? not an amplified analog waveform (if you just want to amplify it, use an opamp)? And you are just trying to detect the pulse - there isn't something important about the shape of the pulse (in this case, why not just a comparator?)? Or do you need to do processing of the input pulse?
We use a pair of inductive coils to measure the "start" and "stop" of a projectile as it passes through them. The chronograph figures the velocity. On some types of projectile material, the output from the coil as the projectile passes through is very weak. Sometimes as low as 200 millivolts with a 2 millisecond duration of a single sine positive or negative (depending on the material) analog pulse.
I was thinking the Arduino could take that weak signal in, and perhaps output a 3-5 Volt amplified value of the pulse out to the chrono. I suppose it would have to pick on a high or low input. Not really sure what I'm doing here, Just trying to figure out a fix. Would the Arduino have to be connected to a relay to sync the higher voltage output from the processor trigger?
I would pre-process the input with a comparator or opamp to get the signal to normal logic levels, instead of using an Arduino for that....
Thanks for the input