Load Cell to Serial Monitor | STM32 Embedded Systems Tutorial
In this tutorial, we build a precision Load Cell Interface System to measure weight using the STM32F103 (Blue Pill) controller. We dive deep into the signal conditioning process, using the HX711 24-bit ADC amplifier to bridge the gap between analog sensor data and digital processing.
Whether you are looking to build a digital weighing scale or an IoT-based inventory tracker, this guide covers everything from simulation to real-world serial data transmission.
🎯 What You'll Learn:
The Physics of Sensing: How strain-gauge load cells work.
Signal Conditioning: Why the HX711 is essential for low-voltage sensor signals.
Embedded Integration: Interfacing the HX711 with STM32 via GPIO and custom timing.
Data Visualization: Calibrating raw data and displaying weight on a Serial Monitor.
Simulation: Validating your circuit design in Proteus before hardware assembly.
🛠️ Hardware & Tools:
Microcontroller: STM32F103C8T6
Sensor: Load Cell (Strain Gauge)
Amplifier: HX711 Module
Software: Proteus for Simulation, STM32CubeIDE/Keil
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