Build Accurate DIY Weighing Systems with HX711 Load Cell Amplifier

The Load Sensor HX711 module is a precision 24-bit ADC (Analog-to-Digital Converter) designed for reading load cells and weight sensors. It’s widely used in DIY scales, IoT weight monitoring projects, automation systems, and smart devices.

At Sensors and Gauges, we provide HX711 modules, load cells, and complete weighing kits for seamless integration with microcontrollers like Arduino, ESP32, and Raspberry Pi.

👉 Request a Quote for HX711 Load Cell Kits

Why Use the Load Sensor HX711?

A load cell produces very small millivolt signals when a weight or force is applied. These signals are too weak for microcontrollers to read directly.

The HX711 module:
✔ Amplifies the load cell signal
✔ Converts it to a 24-bit digital signal
✔ Sends accurate weight data to microcontrollers via two-wire interface (DT & SCK)

This makes it the industry standard for low-cost, high-accuracy DIY weighing systems.

Components Needed

To use the Load Sensor HX711, you typically need:

• Load Cell (5kg, 10kg, 20kg, 50kg, etc.)

• HX711 Module (with amplifier + ADC)

• Microcontroller (Arduino, ESP32, Raspberry Pi, STM32)

• Breadboard & Jumper Wires

• Power Supply (3.3V or 5V depending on the MCU)

👉 Related: Load Cell for ESP32

How to Connect a Load Cell to HX711

1. Wire Load Cell → HX711 Module

   • Red (E+) → E+

   • Black (E−) → E−

   • White (A−) → A−

   • Green (A+) → A+

2. Wire HX711 → Microcontroller (Arduino/ESP32/Raspberry Pi)

   • VCC → 5V (or 3.3V)

   • GND → GND

   • DT → Digital Pin (e.g., D5)

   • SCK → Digital Pin (e.g., D6)

3. Install HX711 libraries for Arduino or Python.

4. Calibrate using a known weight.

5. Start reading real-time weight data.

👉 External Resource: HX711 Technical Guide – LoadCellShop

Example Projects with HX711

💡 DIY Kitchen Scale – Small load cell + HX711 + Arduino
💡 Smart Coffee Scale – IoT-enabled with ESP32
💡 Animal Feeder – Monitors food weight with Raspberry Pi
💡 Industrial Hopper Scale – Uses multiple load cells connected via HX711
💡 IoT Weight Logger – Sends weight data to Google Sheets or AWS

Benefits of Using Load Sensor HX711

✔ 24-bit resolution – Very high accuracy
✔ Low cost – Affordable for hobbyists & startups
✔ Easy integration – Arduino, ESP32, Pi compatible
✔ Low power consumption – Ideal for battery-powered IoT devices
✔ Supports multiple load cells (in some configurations)

Choosing the Right Load Cell with HX711

• 5kg–10kg Load Cells → Kitchen & lab scales

• 20kg–50kg Load Cells → Medium weighing applications

• 100kg+ Load Cells → Industrial hoppers, bins, silos

• S-Type Load Cells → Tension/compression monitoring

👉 Related: Load Cell for Weighing Balance

Why Buy HX711 Load Sensor Kits from Sensors and Gauges?

✔ Pre-tested HX711 modules with load cells
✔ Plug & Play weighing kits for Arduino & Raspberry Pi
✔ Expert support for coding & calibration
✔ Fast shipping across Australia

📍 Location: Unit 27/191, McCredie Road, Smithfield, NSW 2164

📞 Support:

• Call/WhatsApp: 0477 123 699

• Email: sales@sandsindustries.com.au

👉 Buy HX711 Load Cell Kits Online

Final Thoughts

The Load Sensor HX711 is the most popular, cost-effective, and reliable way to read load cell signals with Arduino, ESP32, and Raspberry Pi. Whether you’re building a DIY scale, a smart IoT weighing system, or a precision industrial solution, the HX711 module provides the accuracy and flexibility you need.

👉 Start your project today with our HX711 Load Cell Kits for hassle-free integration.