I’m a big fan of the nunchuck form factor, but I got a little tired of the drops and full-speed throttle stick incidents (Nyko Kama to Vesc). I love the reliability of the GT2B, but the case is huge and I’ve never liked the trigger throttles. So, inspired by BadWolf and a couple other mod cases I’ve seen here, I decided to start this project.
- Compact- a bit bigger than the Nyko Kama, but easily fits in the hand and doesn’t look like a gun.
- Minimal modification to gt2b hardware- battery needs to be “peeled” and leads soldered on, small part of the POT mount needs to be filed (or you can remove the POT pcb and solder directly to the POT leads).
- Sturdy- case is a minimum 2mm thick, more in high-stress/likely impact points
All files are available here: https://cad.onshape.com/documents/57492363e4b0e481fb3b14f4/w/0699c8a2c4713782c84202b6/e/387affeef8dc732f6b233af7
I’ve got it posted on thingiverse as well: https://www.thingiverse.com/thing:1626414. But, you’re better off going to onshape and exporting your own .stl as the file is changing daily at this time.
I’ve been slowly learning OnShape as I go with this project, I had zero parametric CAD modelling experience prior to starting this case project a few weeks ago (mostly I’ve been using sketchup). OnShape is awesome for me as it’s web browser based, I can draw a little during downtimes at work, I can draw at home, I can draw on my phone or tablet- and it’s FREE (as long as you fit the criteria). So, please, if you see something that could be done better/more efficiently let me know- I’d love to get some feed back from experienced modellers.
This project is still very much Beta- let me know if you run into any problems and feel free to modify the files as you need (I’d love to see what you do with this, so please post links!).
Assembly Tips: I hope to make a little better tutorial once we iron out the kinks, but here’re some tips to help you early printer/adopters.
- Case sides are designed to be printed flat side down without supports, same for the thumb throttle.
- Steering POT is a 90 degree turn, trigger throttle pot is 50 degree- as it sits, I’m using the steering POT, but i plan on adding support for the 50 degree (short throw version).
- See pic on the battery, insert as shown to the right case half (should be snug) and is held in place by the PCB.
- PCB and throttle mount with shorter screws, case halves go together with the longer screws (all screws taken from the GT2B during disassembly).
- Dab some hot glue on the antenna wire where it’s soldered to the board (unless you like soldering really tiny/annoying shit back together).
- Antenna fits in the “U” slots of the right case half- this is a very recent addition and I haven’t tested this print just yet.
- Thumb throttle is a tight press fit onto bare POT d-shaft, original plastic shaft must be removed.
- I originally designed the POT mount to have the PCB removed and just solder the wires directly to the POT legs, but you can leave the PCB attached and bend it backward to fit in the case (see pic) by cutting/shaving a little plastic off the steering POT mount itself.
- Use the spring from the trigger throttle on the steering POT- it’s stiffer and gives better/positive feedback.