I changed the orginal code slightly. Now I have the opportunity to weigh a spool after printing and the used filament is updated in the database. (for printers without Klipper e.g. Bambulab or similar) The selection of which filament is on the scale currently works via a rotary encoder and is shown on the display (ID and name). After pressing the rotary encoder, the database is updated with the current weight (measured weight).

Hardware:

ESP32

HX711 Load cell (2 kg)

0.96 inch OLED module

KY-040 Rotary Encoder Module

KDC11 ON/OFF Rocker Switch

CJMCU Micro USB Breakout Board

Printed Files:

https://www.printables.com/de/model/466905-filament-scale-remix

Todo:

• integrating an RFID reader
• New design of the housing with integrated RFID reader