Crazyflie current draw

Firmware/software/electronics/mechanics
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luisruiz
Beginner
Posts: 14
Joined: Fri May 31, 2013 7:39 am

Crazyflie current draw

Post by luisruiz » Tue Jan 14, 2014 1:52 pm

Hello,

I was wondering if anyone knows how much is the current draw of the CF???

The datasheet says the battery has a capacity of 170mAh, then the battery has a continious discharge rate of 25C.

That means capacity * discharge rate = 4.25 A / 4 motors = 1.0625 A each motor max.

If we apply a safety factor of 80% = 850mA each motor max. Which is the same as the motor specifications.

I want to confirm this, the datasheet also has a burst rate of 50C, how do I know I am not using this rate??? Is there a protection to use 25C all the time??? What could be the max current draw we can get from the battery???

Thanks!!!



tobias
Bitcraze
Posts: 1879
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Crazyflie current draw

Post by tobias » Wed Jan 15, 2014 10:20 am

The PCM in the battery actually limits it, see the wiki. It is limited to about 4A continuous which ~25C as you calculated.

When the Crazyflie hovers it consumes around 1.5A in total and during bursts up to 4A.

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