Robust slimeVR case for 18650 with switch, extra small with replaceable belt clips and no supports.

slimeVR case for 18650 with switch and replaceable clip. Extremely sturdy and small and almost no supports.

The unit can be printed with all kind of printers, I used a margin of .2 mm to make the print fit exactly for an Anicubic S printer.

Why another case:

I have been trying several cases but none of them where what I was looking for. Mainly related to the fact that the designs where not very strong (mainly the belt clip/battery) or logical with support etc. or did not have a switch which avoids draining your cells..
And I don't have an expensive 3D printer so it should be easy to print.
And last but not least, the li-ion battery 18650 must be held in its place very securely due to its potential fire hazard. Even if the case is dropped or bumps in to something the battery shall not move or cause a short.

Therefore I started to design my own.

The switches I used are very cheap from ALI and good for this design.

Interruptor on-off mini Slide Switch SS12D00 SS12D00G3 3pin 1P2T 2 Position

The are installed in a seprated opening in the base and covered with a seperate lit.

The Gyro accelerator I used is the following (others with the same size will work as well):

MH-ET LIVE BMI160 GY-BMI160 6DOF 6-axis Rate Gyro Gravity Accelerometer Sensor

The mainboard is designed (2 base versions) for the following CPU board and I made an opening for the reset switch:

ESP12F-MICRO or USB-C (SlimeVRV1), WeMos D1 Mini Pro V3.0 or WeMos D1 Mini Pro V4.0 (SlimeVRD1V4).

The protection board I used is:

5V 1A Micro/Type-c/Mini 18650 TP4056 Lithium Battery Charger Module Charging Board With Protection Dual Functions Li-ion

It is important that the connections from the battery to the protection circuit is well isolated, also when the unit is dropped etc. beacuse you don't want to short circuit those. Thats why I designed the switch completely isolated from the battery with an channel to guilde thw wiring from the switch to the battery.
Keep in mind to provide good insulation with the wiring also!

Be aware that lithium cells can catch fire, there it is at your own risk working with them.

I have two belt clips for different sizes (25mm and 40mm) of belts that can be replaced if needed and with som rings you can use the with a normal belt. (see pictures.

I designed the USB C input for charging in such a way that most of the common USB C cables can fit the unit.

I used a blue, partly transparent, PETG material so you can see the LED clearly.

The unit is only 7,7 x 3 x 3,2 cm including the robust belt clip.

The 4 screws are 2 cm long and 2 mm thick and also hold the belt clip in its place.

I left a gap for the additional cable attached to the waist version without wifi. (See SlimeVR site for more information)
I used all of them with WIFI.

Final remark. I could be that you need to rotate the designs in Cura befor printing.

The small opening for the reset switch (if needed) does have a tiny support. This is also for the switch cover, but it is extremely easy to remove.

If any questions arise just let me know.

I always use PETG since it has a better flammability rating compared to PLA.

You can use youre own setting, which you like, although I recommend a BRIM to avoid warping. The unit is very easy to print and has no supports.

PETG 250Degrees with a 80 degrees plate.