Summary

if using the file named base_with_better_band_support.stl then this has built in supports that need removing, it is where the rubber band slots in.

I designed this to use the MadLab MLP105 Electronic Kit, Junior Theremin as it works the same way as a rem pod and this thing works great, do change the antenna to a telescopic one, this is designed to use a 5mm or 6mm one at the base, I printed mine with abs but pla will work just as good, only use support if the file name mentions support, one file has tpu in the name so use tpu or or other rubber based filament for that part, it is used to push the antenna through so if it gets damaged then just pull out the old and solder the wire to a new one and push back in, its friction fit, use 4 x 5mm leds, two 6mm or 7mm buttons on the top and the power switch is a 20mm simple on off switch, it is powered by a 9v pp3 battery which is mounted on the base and uses an elastic band to hold it in place, I planned to fix the pcb to the side of the inside so this is why there are two upright walls inside, i changed my mind and placed it using thick double sided tape to the inside of the base but do not let anything touch the antenna part of the pcb or it could interfere, the two buttons as far as I can tell when both pressed change the sounds it produces.

top and tpu parts, you only need one of each so choose which one you want, the top with sides makes less mess when glueing together and the tpu part is nearly the same but one has a ridge on one side which can be useful for lining it up with the antenna so it is not at an angle but when gluing in then insert the antenna in the tpu hole with no glue so you can line it up so it is straight, the antenna does not need glue as it is a pressure fit incase it is damaged in the future it can be pulled out and replaced without breaking open the case the connections for the two momentary buttons are shown in the pictures

anenata used https://www.amazon.com/dp/B00N41BCXG?psc=1&ref=ppx_yo2ov_dt_b_product_details

buttons https://www.amazon.com/gp/product/B0752RMB7Q/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

switch https://www.amazon.com/gp/product/B07XC5KB8D/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

MLP105 Electronic Kit, Junior Theremin (I got one of the so called used ones, was still a kit and cheaper)
https://www.amazon.com/dp/B01MRCPHN5?psc=1&ref=ppx_yo2ov_dt_b_product_details