Nullstring's Load Cell Horizontal Roller

These models convert [Vincent Groenhuis' Universal Auto Rewind Spool Holder](https://www.thingiverse.com/thing:3338467) to a horizontal roller using a load cell, HX711, waveshare e-paper screen, and an ESP32 to measure and transmit the weight of the filament on the spool to Home Assistant.

- [ESP32](https://www.amazon.com/3PCS-ESP-32S-ESP-WROOM-32-Development-Microcontroller/dp/B0D8S22V7L/)
- [Load cell and HX711](https://www.amazon.com/Digital-Weighing-Arduino-Portable-Electronic/dp/B09K7G3477/)
- [e-paper](https://www.amazon.com/2-9inch-Module-Resolution-Display-Electronic/dp/B07P6MJPTD/)
- [bearings](https://www.amazon.com/Tonmp-100-608-ZZ-Ball-Bearing/dp/B0B4JGLQFB/)
- [example HomeAssistant ESPHome Device Config](https://raw.githubusercontent.com/0x00string/3d-models/refs/heads/main/horizontal%20load%20cell%20roller/device_name.yaml)

https://www.dirtcheaphackingtools.com/