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Old Oct 03, 2011, 08:08 PM
caall99 is offline
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Power-line attraction pilot
United States, MA, Natick
Joined Jun 2011
528 Posts
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My crazy Micro Heli FPV idea. I need some advice!

I am using the FPVhobby.com 200mW 5.8GHz transmitter that draws 330mA @ 3.3V...

and a MC-495A camera that draws 75mA @ 3.3V to 6.0V.

Total theoretical draw is 405mA. This is a micro heli FPV setup (which may never fly from the added weight). Every gram counts here and i predict a 10 minute (at the very very most) flight time off the 180mAH main battery. I would like to match my video setup to the main battery's limited flight time, in order to keep the weight as low as possible.

1. Any recommendations on camera and Tx batteries and where to get them at the lowest price? Since I assume these batteries will be sub 100mAH, what sort of charger should I be using?

2. How can I effectively drop the 4.2V from a fully charged 1S battery to 3.3V to power the Tx and camera? Will LD1117 LDO do the trick? Or should i be using a diode?

Thanks for the help guys! Ordering everything right now!
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Last edited by caall99; Oct 05, 2011 at 05:47 PM.
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