V20D voltmeter casing

thingiverse

How's the power supply doing in terms of power supply? You can whip out the multimeter, but you might as well just grab one of those dirt-cheap V20D voltmeters on eBay, deal-scream or Mines-in-a-box - it won't break the bank! Clip it to your printer or power supply and you'll get a constant readout on the voltage. Those LEDs are fantastic and guaranteed to put a smile on your face. Don't get too excited though; it's not that great for a reason. It's just a plain jane 7-segment LED setup and some basic circuitry under the hood. It desperately needs a housing, which is why I made this: Instructions Follow these super easy steps: First off, print out those two parts and clean up the holes in the lid with a 3mm drill, then the case itself with a 2.5mm drill. You might have to sand down some of those notches a bit to get it to fit the PCB - depending on your printer. Now, all you gotta do is stick it together where it belongs and voila! Double-stick tape is your best friend here. Black goes straight into ground. Red and white team up for positive voltage connections.