packageWeighing
Weighing chain: load cell body, strain gauge bridge, HX711 converter
Extends from Modelica.Icons.Package (Icon for standard packages).
Information
The links of an electronic scale, from the force to the digital measurement read by the microcontroller:
Force (standard source Modelica.Mechanics.Translational.Sources.Force, the weight) → LoadCell (load cell body: the force deforms it) → WheatstoneBridge (four gauges bonded to the load cell body: the strain unbalances the bridge) → Hx711 (24-bit amplifier and converter) → MCU (read by a MicroPython driver, PD_SCK and DOUT pins).
Examples: Examples.Weighing.Hx711Read (raw readings, gain, power-down) and Examples.Weighing.KitchenScale (complete kitchen scale, I2C screen and tare button).
Contents
| Name | Description |
|---|---|
 Hx711 | HX711 converter: 24-bit amplifier and ADC for a gauge bridge, PD_SCK/DOUT serial link |
 WheatstoneBridge | Full Wheatstone bridge: four strain gauges bonded to the load cell body |
 LoadCell | Load cell body (quasi-static model): the applied force deforms it, its strain is passed on to the gauges of the bridge |