Extra stuff
In June of 2019 Zane Andrews and Nino Benci from Monash University posted a cool idea to the FED3 forum. They used a simple laser-cut piece of acrylic in the cage to block the mice from climbing on the top of FED3, keeping the FED3 cleaner. Here is a photo of their design.
This idea was also designed to fit in our cages (AllenTown NexGen caging), with editable 3D print files available here (you can edit them to fit your own caging). These include small cut-outs for 3x8mm round magnets (the same ones on the front-plate of FED3) to hold it in place. Photo of wall in a cage with a FED3:
The battery connection on FED3 is pretty annoying, as it is right next to the stepper and is difficult to plug in when swapping batteries. As a workaround I looked for a small 2-pin LiPo extension cable but couldn't find one online. So I designed a small PCB to fit this need. Here is a link where you can purchase it from Oshpark, the PCB costs ~25 cents each.
You will also need a JST PH 2.0 2-pin female connector with cable, and a male JST PH 2.0 2 pin through-hole connector.
Watch out when buying these parts from Amazon and make sure to read the reviews, apparently the polarity (red/black wire locations) can be reversed from some suppliers. Solder the JST female pigtail and male connector into the PCB and plug the cable into the Adalogger on the FED3. Now you have a battery extension that makes it much easier to swap out the battery!
