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Old Jun 22, 2011, 06:45 PM
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Fidler & twidler
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Cranfield U.K.
Joined Mar 2004
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Quote:
Originally Posted by RcNutDave View Post
I actually order 1 of each to test them out.


Anyone know of a software program that monitors usb power, (volts-amps) and displays onscreen?

Would be nice to monitor usb when charging all my keycams, watching volt/amp trends especially at cutoff.
The only way of monitoring the camera battery voltage/current is to cut in to the camera battery wire with something like the Eagletree charger monitor, and even that will be affected by the protection circuit fitted INSIDE the battery itself.
Monitoring the 'USB' voltage and current will not tell you what is happening because there is a Lipo (lion) charge controller chip on the camera PCB.
To emulate a USB supply, the power supply should give 5v, but the lions only give 3-4.2 volts, so there is a step up circuit with unknown regulation characteristics - nightmare scenario time as we don't know how much current the camera itself is using - internal clock is always 'on' , and what mode is the camera in?
Mike
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Last edited by empeabee; Jun 22, 2011 at 06:50 PM. Reason: clarification