Iot telemetry scale pcb

IoT Telemetry Scale – PCB Design

This repository contains the KiCAD design files for the custom PCB used in the IoT Telemetry Scale project – a modular, networked weighing solution originally built to monitor the weights of budgies in an aviary. 🐦📡

The PCB is built around the ESP8266 (ESP12-E/F) and the HX711 load cell amplifier, aiming to be compact, reliable, and easily integrated with MQTT-based telemetry systems.

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⚠️ Disclaimer / Flaws

🛠 This PCB was specifically designed for a personal, non-commercial project.
It is tailored to the requirements of my own bird scale setup and may not meet broader standards or needs out of the box.

• The layout was created to match a 3D-printed housing (available as a FreeCAD project in a separate repository), designed to fit one feeding station in our aviary.
• The load cell used is a non-standard part salvaged from a consumer coin scale. Mounting holes and electrical characteristics may not match typical off-the-shelf sensors.
• The PCB was optimized for simplicity and personal ease of assembly, not for mass production or universal compatibility.

👉 Adapt to your needs!
If you intend to use different load cells, microcontrollers (ESP32, for example), or housing dimensions, expect to modify the schematic and board layout accordingly.

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💾 Files Included

• *.kicad_sch – KiCAD schematic file
• *.kicad_pcb – PCB layout
• *.lib / *.mod – Custom symbols and footprints (if applicable)

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🔧 Requirements

• Used KiCAD Version is 9.0.1 (project not guaranteed to open cleanly in earlier versions)
• Familiarity with ESP8266 / HX711 modules
• Soldering tools and basic electronics skills

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📦 Suggested Components

• Microcontroller: ESP8266 (ESP-12E or ESP-12F module)
• Load Cell Amplifier: HX711
• Power Supply: 5V micro-USB or regulated supply (depending on build)
• Load Cell: Use a standard model, often sold with appropriate HX711 module altogether

Note: Adjust footprints and layout to your needs.

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📸 Related Projects

• iot-telemetry-scale - Meta repository
• iot-telemetry-scale-firmware – Firmware for this board

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📜 License

This project is open source under the MIT License.
Feel free to fork, modify, and improve!

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🙏 Acknowledgements

Special thanks to the open hardware community and the creators of KiCAD for making electronics design accessible to everyone.