![](https://blogs.ntu.edu.sg/ps9888-2018-blindsight/files/2018/05/variations-1zsshpv-300x225.jpg)
Our final design is a casing similar to that of a fanny pack. The finalised design includes a hole made to fit the pi camera exactly, a remove-able cover, slits on both sides for the Velcro strips and two holes on the left to allow a USB C connector to pass through to either charge the battery or power the pi. The Velcro strips are long and allows for size adjustment. The casing was completely 3D printed to allow for specific dimensions of the casing as well as allowing it to be lightweight by printing it at an infill of 15%.
![](https://blogs.ntu.edu.sg/ps9888-2018-blindsight/files/2018/05/inner-look-1prg9th-300x225.jpg)
Inside the casing, there are mounts for the battery and the pi that have been hot-glued to the casing to prevent the devices from shifting about while in operation. We also prevent damage to the devices by not gluing it to the casing. The docks also allow for the changing of devices should either spoil at any one point in time as the devices can be conveniently slid out of their docks. The casing and battery dock has been designed to fit a 10000 mAh Xiao Mi Portable Charger. This allows the pi to last up to two hours of constant operation.