My mini pill scale allows someone taking medicine to use weight to tell if they have the right number of pills left in their bottle.

Check out the video I made about it.

Code and instructions here: https://github.com/krampster/MiniPillScale 

I printed in 3 colors of PETG, at 30% infill and 3 perimeters.

I learned about virtual color extruders from this print. I recommend you follow those instructions.

https://www.printables.com/model/4074-malolos-screw-less-snap-fit-raspberry-pi-4-model-b

There are 2 additional settings changes that I recommend after those:

1. For each virtual extruder (this one uses 3), set “Retraction when tool is disabled - Length” to 0. Otherwise it extrudes that amount after the color change is complete, leading to extra blobs.
2. I found that for some reason the MK3S+ color change didn't prime the color as well as it should have, leading to underextrusion for the first few mm. Enabling a very small wipe tower (that's only necessary for the first few layers) made it come out much cleaner.

For supports on the plate and base parts, use snug/grid, not organic, as it makes popping off the supports easier. You can increase XY separation to 200% also, as tightness of supports is completely unnecessary.

The hole for the button has a “sacrificial layer” to avoid supports that you should cut out with a x-acto knife.

I'd also buy the Adafruit ADC, and manually snap off some supports and hot glue the part in when you're done.