Anyone ever try to rig up a circuit that diverts power from the AEG pack to the counter in order to eliminate the 9volt battery?

Sure the counter wont work when the battery is removed from the gun but it seems to me it sure would simplify a lot of things.

I think it would behoove someone to rig a counter that ran off 8.4 rather than 9 v just need to knock the amps down (I assume).


M

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"Stand up for something...Or get knocked down for nothing..."

If the counter works on 9V, I can all-but guarantee it would work fine on 8.4V and probably also 7.2V without modification. Maybe slightly less bright, but only slightly.

You don't need to worry about amps (current) since a device only draws as much current as it requires: The power supply has to be capable of supplying sufficient current, but it doesn't matter if the power supply's rated maximum current is greater than is required provided the voltage is correct.

What about 9.6v batteries? Would that fry the counter?

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Jay Pennington

At your own risk! I would doubt it would be a problem, but one day a freshly charged battery could kill it.

You should check if the counter has a voltage regulator (a part that looks like a big regtangular transistor with a flat metal surface). All counters I've seen so far had one as the typical operating voltage for microcontrollers is 5V. So anything above 6V should do. I think anything up to 12V should be fine, but depending on how much current the counter needs the regulator might get quite hot. If it get's too hot to touch you've gone too high with the voltage (this won't kill your counter if you notice it in time and unplug it and let the parts cool down).

Cheers,
Stefan