Raspi Zero Housing for BK-G4 Gas Meter (Version 2)

prusaprinters

<p>This project started with the rising gas prices. I wanted to have much better resolution of the gas usage in my house. Understanding when gas is burned should give me a better idea how to save it.</p><p>The standard gas meters (in my case the BK-G4T) usually have a magnet rotating with the last digit. Means you can capture the position of the magnet with a reed contact.&nbsp;</p><p>The housing of the gas meter has an opening to fit a sensor, and right there this raspi case places the reed contact. The housing itself is clamped to the gas meter, thats where you´ll need the tiny “knob” model.</p><p>&nbsp;</p><p>Assembly of the case requires&nbsp;</p><p>4* M2.5*6mm</p><p>7* M2.5*8mm</p><p>1* M2.5*12mm</p><p>1* M2.5*20mm</p><p>14* M2.5 Nuts</p><p>so just get a pack of M2.5 screws ;)</p><p>&nbsp;</p><p>For the electrical part I used a plastics 14x2.5mm Reed contact. This size fits well into the slot. Easy to find on Amazon or an electronics shop.</p><p>&nbsp;</p><p>The model prints nicely on my MK3S+.&nbsp;</p><p>You´ll probably need to clean the notches where the nuts are placed, but that´s it.&nbsp;</p><p>&nbsp;</p><p>If you´re looking for Python3 code (incl. Grafana Dashboard) to make the whole thingy run on a Raspberry Zero W: You can check <a href="https://github.com/BumSan/heizung_gaszaehler">my GitHub</a> for that.</p>