ACME Qi Charger - 85mm desk grommet

prusaprinters

The ACME Qi Charger is an 85mm desk grommet enclosure for Adafruit's Qi transmitter coil and pcb assembly.https://www.adafruit.com/product/2162The Adafruit component was purchased from Digikey.https://www.digikey.com/en/products/detail/adafruit-industries-llc/2162/6827104The enclosure has air holes to pull cool air from below the desk through the top. Printed in a clear filament, the onboard pcb led lights up the grommet enough to see the status. If you're not interested in the status of the pcb, print the enclosure with an opaque filament.The bottom and top piece have a sharp-angle chamfer that make for an easy but secure press fit but you can pull them apart to replace with different electronic components if the circuitry goes bad. The pcb doesn't have an internal mount, it just floats in the enclosure. Make sure you put a non-conductive covering over the screw. I used a piece of double-stick mounting tape but left the protective coating on one side. Make sure to run the cabling through the bottom piece's cable strain relief to protect the pcb.The Adafruit component works great and I recommend it but the coil size is probably pretty standard so I would imagine that this enclosure will work with multiple Qi transmitter units.If you want to change the design instead of using the provided stl files, the FreeCad design is included as a starting point.These chargers looks great in a desk and phones slide onto them like butter skates on a griddle, Paul Bunyan style.