20Kg Load Cell

📌 Overview
The 20Kg Load Cell is a weight/force sensor that measures loads up to 20 kilograms.
👉 It is widely used in:
⚖️ Digital weighing scales
🤖 Force measurement systems
🏭 Industrial automation
🧪 Smart IoT weighing projects
🧠 Working Principle
The load cell works using the concept of Strain Gauge:
Inside → metal beam with strain gauges
When weight is applied → beam deforms slightly
This changes electrical resistance
Output → very small voltage signal (mV range)
👉 Requires an amplifier like HX711 to read values
📊 Infographic Summary
┌──────────────────────────────┐
│ ⚖️ 20KG LOAD CELL │
├──────────────────────────────┤
│ 🎯 Measures: Weight/Force │
│ 📏 Capacity: Up to 20Kg │
│ ⚡ Output: mV signal │
│ 🔌 Type: Wheatstone Bridge │
│ 🧠 Tech: Strain Gauge │
│ 🔧 Needs: HX711 Amplifier │
└──────────────────────────────┘
🔌 Wire Configuration
┌────────────────────┐
│ 20Kg Load Cell │
├────────────────────┤
│ Red → VCC (E+)
│ Black → GND (E−)
│ White → Signal − (A−)
│ Green → Signal + (A+)
└────────────────────┘
👉 Connect to HX711 module, then to microcontroller
⚙️ Key Specifications
📏 Capacity: 20 Kg
⚡ Output: 1–2 mV/V
🔌 Configuration: Wheatstone Bridge
🎯 Accuracy: High (after calibration)
🔋 Low power consumption
📐 Material: Aluminum alloy
🌟 Key Features
⚖️ Accurate weight measurement
🔧 Compact and durable
📉 Low noise output
🧠 High sensitivity
🔗 Easy integration with HX711
🧪 Applications
⚖️ Electronic weighing machines
🛒 Smart shopping carts
🤖 Robotics force sensing
🧪 Industrial automation
🧰 Inventory weight monitoring
🥗 Kitchen scales
🔗 Interfacing
Works with:
🔵 Arduino
📡 ESP32 / ESP8266
🍓 Raspberry Pi
👉 Flow:
Load Cell → HX711 → Microcontroller
🔄 Working Flow
Weight applied
Load cell deforms
Resistance changes
HX711 amplifies signal
Microcontroller reads weight
⚠️ Important Notes
⚠️ Cannot connect directly to Arduino (signal too small)
⚠️ Needs calibration for accurate readings
⚠️ Avoid overload beyond 20Kg
⚠️ Must be mounted properly for correct measurement
🆚 Load Cell vs Pressure Sensor
Feature
Load Cell
Pressure Sensor
Measures
Weight/Force
Pressure
Output
mV signal
Analog/Digital
Accuracy
High
Moderate
Use Case
Weighing scales
Fluid/gas systems
💡 Pro Tip
Use calibration weight for best accuracy
Mount on a stable surface
Use multiple load cells for large platforms
👉 Perfect for building your own digital weighing machine