voltage readings

[streetrage]

can someone tell how to take voltage measurements on the pcb board where the f,b,r,l things are to the side....what do they do...I have been told thye cna be used to hook up lights??

[actofgod]

I need electronics help too.

Can someone tell me the current that a bit draws in milliamps when the motor is running? Not just what the motor draws but the whole bit.

I need single cell *and* dual cell readings for a project. Or if you happen to know the resistance of a bit that would help.

Thanks.

[El Rojo]

You can measure the current draw on your bit by placing the multimeter probes across the circuit UNDER LOAD. Make sure your multimeter can measure such things or you'll fry it. A simpler method is to calculate your draw by timing how long it takes to drain your battery. Let's say you are using a 150mAH battery, which provides 150 milliamps per hour, if your battery drains in 20 minutes, your current draw is (average) 450 milliamps (150 * 60 / 20). If you head over to www.ezonemag.com and search the forums, there is plenty of information available on this topic.

El Rojo

[Namuna]

Originally posted by streetrage
can someone tell how to take voltage measurements on the pcb board where the f,b,r,l things are to the side....what do they do...I have been told thye cna be used to hook up lights??

f=forward
b=back
r=right
l=left

Those are the components that control steering and movement. You attach lights to specific ones if you want the lights to only come on when going in a certain direction (like for turn signals)

Let's say you are using a 150mAH battery, which provides 150 milliamps per hour, if your battery drains in 20 minutes, your current draw is (average) 450 milliamps (150 * 60 / 20).

Wouldn't it be nice if it were really that easy. That equation would only work if you actually always charged the battery to that capacity, NOT the case when using the generic charger.

[El Rojo]

Namuna,

You are absolutely correct. I was assuming cell had been 'peaked', I have a peak charger, I was thinking others might be using them as well.

El Rojo