Pentax Q USB external battery & vertical grip

Updated the proof of concept.

Now using a much neater and smaller screw (from a spare that comes with a mini Manfroto folding tripod) to replace my previous chunky tripod thread attachment. The battery box is firmly mated to the Q’s base. I can comfortably fit a pair of 3.7v 2200mAh 18650 Lithium cells wired in parallel for far longer battery life. The battery is directly feeding the Q and charges via the powerbank circuit via USB. It would be excessive hereto buy expensive higher capacity 18650’s as it already runs for so long as it is now.

Added a removable IR remote to the front and with a short length of clear fishing line as a light pipe to feed the signal to the Q’s front IR sensor window. The 3rd party remote is one that has separate buttons for focus function and shutter release. It works! I can wield the unit firmly gripped in just my right hand and take a picture in portrait mode using the remote buttons. A nice bonus on top of having the now stupendously long battery life!

Now I’m sure this is all functional, I can later consider wiring an index finger friendly clicky shutter button to the side of the battery case and another button for dedicated back focus. Also on the functionality to-do list is to fit a female tripod thread. 

The endgame would be to have a black 3D printed version of a mini Pentax DSLR vertical battery grip that is housing the IR remote board and buttons, the twin Lithium cells and charger circuit and 2 tripod mount points to cater for both landscape and portrait orientations.

Yes... this is getting ridiculous...

https://youtu.be/gY1Vc0D8i-I