pentax Q7 - battery DLI68 001

Auxiliary battery for Pentax Q7

• I use mine to take photos on top of a trinocular stereo microscope. Being able to attach a much bigger battery to the camera means I can just rely on the auto-off feature to turn off the camera, and still rarely need to recharge anything..... or just use bench power/USB and never need to recharge anything.

Herp Derp

• Using a strip of 0.1mm nichrome battery connection strip; cut to 3mm wide and whatever lenght, you can wrap the PROBES components in nichrome, solder wires to the tops of them. Insert them into the battery dummy and glue them down.
  https://www.aliexpress.com/item/18650-lithium-battery-pack-nickel-plated-steel-10mm-width-nickel-strip-connection-spot-welding-nickel-plated/32808730652.html

• I used a male 2.54mm XH connector on the end, and plug it into a salvaged tablet 3.7V battery pack. Any DC3.5-ish Volt supply you have on hand will do.

• Some of the images show how you could use resistors to convert a USB connection to 3.7V. I plan to HDMI my Q7 into a 55" TV that sits behind my microscope, so USB as a power source seemed logical. Using the 3.7V is simpler though.

Works for me:

• PLA, 0.4mm nozzle, 0.2mm layers, no supports, 5% grid infill, and specify 0.4mm external perimeter in your slicer or the tolerances may not work for you. It's pretty forgiving though, so whatever... if the probes don't fit in the slots with nichrome on one side and wrapped around the tip... then you need to set perimeter width.
• I had to print my probes in a bunch of 4 before i got one that didnt fail, and when i printed two next to the battery dummy I only had one not fail. So they are a pain to print. You could almost certainly print them more easily lying down.
  However you should print the BODY of the thing as-is (upright), with no supports.