Qalcosonic W1 PN5180 NFC Reader Mount

Qalcosonic W1 PN5180 NFC Reader Mount

A tested 3D-printable mounting system for installing a PN5180 NFC reader and Seeed Studio XIAO ESP32-C3 on a Qalcosonic W1 water meter.

This mount is part of the open-source Qalcosonic W1 NFC Reader project. The complete project includes the 3D-printable mount, custom adapter PCB, ESPHome configuration and Home Assistant integration.

Parts

The R1.0 mount consists of three printed parts:

• Meter collar / base

• PN5180 carrier

• Upper retainer

The PN5180 is secured with 2 × M3 × 8 mm pan-head screws. No nuts are required.

The upper retainer also includes a small mounting tab for the external XIAO ESP32-C3 Wi-Fi antenna. The antenna can be attached using its adhesive backing or thin double-sided tape.

Printing

Recommended starting point:

• PETG recommended for permanent installation

• PLA works well for fit and function testing

• 0.4 mm nozzle

•  0.20 mm layer height

• 3 walls

• 20% grid or gyroid infill

• Supports: OFF

• Brim: normally OFF

All three parts are designed to print without slicer-generated supports.

Full project

Source files, PCB manufacturing files, ESPHome firmware and documentation:

https://github.com/kosla-dev/qalcosonic-w1-nfc-reader

The complete mechanical design was created parametrically from scratch for this project and has been physically test-printed, assembled and used on a real Qalcosonic W1 water meter.

This model was created with AI-assisted design tools.

License

The model files distributed on Printables are licensed under CC BY 4.0.

The complete project and authoritative open-hardware source files on GitHub are also available under CERN-OHL-P-2.0.

Support

If this project helped you, you can support future projects here:

https://buymeacoffee.com/kosla