Originally Posted by realpastaman
Tested this on a standard def keychain - Purpose is to use the heli battery 3.7 volts to power the HD key chain. Input voltage range is 2.5V - 4.5V output is stabilised 4.3 volts ~ 300mA max it will also do 9V O/P for 2.4Ghz tx. Cant wait to try it out on the HD keychain when it arrives. If anyone wants the circuit then let me know.
When you confirm a working connection to the HD key cam, come back and edit this post, with a circuit diagram and any hook up instructions, tips or tricks, and I'll include it in the Frankencam reserved post #4 for stuff like this.