K2-RFID Box

A snap-fit housing for the K2-RFID tag programmer (see GitHub for more info).

Just print the two components in the color(s) of your liking, add an esp32 s2 mini board, a PN532 module, a 40 mm x 60 mm breadboard (and maybe a piezo beeper and a RGB LED).

Instructions for use and programming are available on GitHub.  

Printed on a K2plus without supports in black and white Hyper PLA with 0.2 mm layer height and 15 % infill. I used scarf seams and enabled the overhang optimization.  All of the precise [wall, z height] options were enabled. 

After printing the two parts, just place the esp board (populate the outer row of pins with connectors) and the PN532 (populate the connectors for SPI) on the lid (small pegs will keep the boards at the correct position - maybe insert a USB C plug for getting it aligned correctly). Add the breadboard on top and fix the modules with some solder.

Now you can add the wires between the boards. Connect the piezo disk to a 100 Ohm resistor and the RGB LED with some flexible wire (4 cm are more than enough). 

Fix the RGB LED with some tape to the position in the lid, shove the piezo disc into the socket, insert the pcb assembly into the lid - now (carefully) snap the box onto the lid.