About this 3D model

As I wanted to do timelapses with my Canon Ixus 220 HS (also known as Powershot ELPH 300 HS) using the great CHDK, I realized that the standard battery only lasts for 2.5 hours. While searching the internet, I found that there is an existing solution by Canon with the major downside that it costs about 90€. So I fired up openscad and came up with this battery dummy for the NB-4L battery. Using a female servo connector and some desoldering wick for the contacts, you are able to power your camera with an external power supply. I supply a voltage of 4.0V which is generated using a cheap LM2596S step-down converter (search LM2596S on ebay). You could use a LM317 linear regulator or anything else that generates the required voltage and up to 2A. You can easily adapt this thing to your own needs using the openscad file.