Case for Energy Meter Optical Interface Reader

This is an improved case for the optical read/write head for energy meters (smart meters) developed by the "Volkszähler" project in Germany.

In addition to the printed parts you'll need:

• a ring shaped neodymium magnet, outer diameter 27mm, inner 16mm, 5mm strong
• a PCB as published on the "Volkszähler" project page
• a length of signal wire with 4 strands and and outer diameter of 4mm
• a small zip-tie

I created this design from scratch because the existing one didn't work for me at all, unfortunately.