Gas meter - AI-on-the-edge

prusaprinters

<p>This mount is designed to attach an ESP32-CAM microcontroller to a gas meter. Together with the open source firmware "AI-on-the-edge" (<a href="https://github.com/jomjol/AI-on-the-edge-device">https://github.com/jomjol/AI-on-the-edge-device</a>) of the user Jomjol it can read the gas meter automatically and send the current counter status to a server via MQTT.</p><p>You can find my tutorial for this project on Youtube: <a href="https://youtu.be/iUgxwbfkIqU">https://youtu.be/iUgxwbfkIqU</a></p><p>Note: My shown kromschroeder gas meter has a recess in which magnetic pulses can be read with a reed switch. These are given at each zero crossing of the second decimal place of the counter. This would certainly have been the simpler approach than using the ESP32-cam shown here.</p><p>If you still want to continue:</p><p>It is a good idea to print the model with black filament to avoid unnecessary light reflections on the meter glass. I realized this too late, so I printed the mount in white, which also works with a little fiddling.</p><p>In order to create controlled conditions during photography, it would of course have been even better to design a closed housing. However, this was countered by the longer printing time and higher printing costs. Since my meters are located in a permanently dimmed utility room, I opted for this solution. The advantage is that you can still read or check the meter values manually without removing or converting them.</p><p>Remixes and improvements of my model are welcome though, you can find the FreeCAD model in the download section as well.</p><p>Jomjol, the AI-on-the-edge-Developer, has also a Thingiverse-Account:<br><a href="https://www.thingiverse.com/jomjol/">https://www.thingiverse.com/jomjol/</a></p><p>2021-05-01 - Revision A: Orientation of the ESP32-Cam rotated to landscape format</p>