Although the camera comes with an housing ... I couldn't find on internet whether it would survive a hit (multiple hits) from BB. And paying 40GBP for a new one to try it is to expensive. So I decide to protect the housing with some stuff I had from a previous project.
- acrylic glass 3 GBP inc shipping
- glue (I've used this)13 GBP inc shipping
- foam 1 GBP (pound shop)
- black film/sticker (optional = 1 GBP)
- dremel / proxxon ... rottary tool
- file or sandpaper
Step 1: The front
Now measure the dims of the "black round rectangle" that's covering the lens. It should be like 43.5 x 39 mm. Now when drawing the lines for the "black rectangle" place it like 6-8mm from the longer side of the acrylic (on the picture it's the bottom) ... and 7mm from the shorter side. The 7 mm covers the 5mm of the side that will be covering the housing and 2mm for the foam. Once you have that, drill a hole(s) into the rectangle and cut it out with the jig saw. Once cut, you might need to file/adjust some of the sides so it will fit onto the housing.
When you cut this rectangle out, place the glass on the housing and determine the position/center of the button. It helps, when you remove the protective film from the glass so you can see it, make a dot and use a 12mm drill bit to make the hole. Once you drill that out, you can play with the rectangle - to file some bit and pieces off, so it will fit nicely. I recommend to do it very tight, as I didn't want mine to "wable".