Water Meter Magnetometer Sensor Case for esphome-magnetometer-water-gas-meter Project

A case to house a QMC5883P magnetometer to read a BadgerMeter 25 water meter (the only tested water meter, it's possible it can be used with other BadgerMeter models). Everything inside the case is meant to be friction fit. This case uses zip ties to attach to the meter for the sensor to be able to read the magnetic flow. I made this to use with the esphome-magnetometer-water-gas-meter project. 

The case uses a RJ11 breakout adapter to output the SDA, SCL, VCC, and GND pins on the sensor to an RJ11 cable. From there, it can be connected to an ESP32. I have created such a case/module for use with a different project, but it can be reused here. If you use my other design with an ESP32-S3-Eth, you'll just need another RJ11 breakout in that case to connect the data, clock, and power pins. 

This case consists of 4 pieces. The first piece is the main body, which houses the sensor and the RJ11 breakout. The second piece is the adapter which matches the radius of the water meter. The third piece is a pin which goes into the bottom of the main body and the top of the adapter to act as an indexing pin. The fourth piece is the lid to the case.

I printed this case from PETG. I put the large flat surfaces onto the bed, with supports on. I use PLA as an interface material to have clean supports for the ziptie channels, indexing pin cutouts, and RJ11 cutout. To get the honeycomb pattern for the lid, adjust slicer settings to 0 top and bottom layers & set the infill to honeycomb. Another adjustment can be made for the infill angle to line it up parallel with the rest of the lines if that's desired.

To assemble, print one of each piece. Use the indexing pin and super glue to attach the main body and adapter together. Use zipties through the cutout channels on the adapter to secure the whole unit to the water meter.