H.R. Giger Counter

prusaprinters

Yes, it's a silly visual pun, but it's also a fully-functional Geiger counter. Best to print it using a dark metallic filament to give it that nice creepy look. I used “mocha silk” PLA for the one in the cover photo.Printing InstructionsThere are 4 different options for printing the main body:- main.stl is the complete model, which you can either print all at once, or split up as needed and glue together- main-split.stl is the model divided laterally and arranged as a single print- main-left.stl and main-right.stl are the halves for printing separately- mini-1.stl through mini-4.stl are four quadrants that can be printed on a smaller print bedYou'll also need to print board-mount.stl and grip.stlIdeally, you'd print the main.stl model as a single unit, standing on end, using an mmu with soluble support material. If anyone has that capability, I'd love to see the results.In addition to the printed parts, you'll need:- a MightyOhm Geiger counter board: https://mightyohm.com/blog/products/geiger-counter/- a rocker switch that fits a 20mm hole: https://www.sparkfun.com/products/11138- 4 M3x12mm bolts with hex nuts - 4 M3x6mm bolts - hookup wire (plus connectors), glue, heat-shrink tubingYou might also need 2 M3x20mm bolts with hex nuts if you've opted to print the laterally-split pieces. These will be used to bolt the halves together. For the mini quadrants, you'll need a total of 6 bolts and nuts.ElectronicsWhen constructing the MightyOhm board, follow the instructions provided, with the following exceptions:- connect the LED (watch the polarity on this) using a pair of hookup wires (preferrably with a connector in the middle)- replace the slide switch with the rocker switch (again with a pair of wires and *definitely* a connector on this one)AssemblyAttach the MightyOhm board upside-down on the board mount using 4 M3x6mm bolts.Insert the LED is into the grip from the inside.Insert the rocker switch into the grip from the outside, threading the wires through first (this is why a connector's so important for this one).Slide the board mount into the main body, resting in the 3 notches (left and right rear, center front).Bolt the grip onto the main body using M3 bolts and nuts.Remix Considerations- A xenomorph face in place of the skull might be fun.- The MightyOhm board contains a serial port interface. It's technically possible to use that to feed data to a display mounted on the grip.- The MightyOhm board also has a pulse output that could trigger an "Aliens" motion tracker sound effect, with the pitch increasing proportional to the pulse frequency.