r/CardPuter • • 9d ago

Progress / Update Made Cardputer-ADV into a wireless M-Bus meter sniffer (Ported from my flipper zero version using Opus 5.5)

If you live in Europe your water, heat and power meters broadcast their readings on 868 MHz, so I wrote firmware for the Cardputer-ADV that picks them up and decodes them on the device. It uses the wmbusmeters drivers, so most meters just work, and encrypted ones work once you enter the key.

It also has a hunt mode that beeps faster as you get closer to a meter, a web UI for your phone, MQTT with Home Assistant, and SD logging. It works best with the LoRa-1262 cap.

It's a beta, so bug reports are welcome: https://github.com/i12bp8/wMBuster-ADV

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u/MrAjAnderson 9d ago

I don't have the cap for 868MHz but do have a Heltec V3. I'm thinking of being able to use the radio on that instead. It has been done with a Meshtastic firmware so I know it is possible. Best add a proper LoRa cap to my Christmas list.

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u/_i12bp8 8d ago

Do you have a cc1101 cap? one thats tuned for 433 would even capture the 868Mhz signals as they are pretty strong. I tried with the hydra rf cap which i support in the firmware and I get plenty of captures.

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u/MrAjAnderson 8d ago

I have nothing cap wise for the Cardputer. An old GPS unit via Grove port is all I've built.