5 kg Load Cell Weight Sensor ⚖️

The 5 kg Load Cell Weight Sensor is a precision strain gauge transducer designed for accurate force and weight measurement in embedded and industrial systems. Built for reliability and ease of integration, it’s ideal for Arduino, Raspberry Pi, and other microcontroller-based projects using amplifier/ADC modules such as the HX711. A compact, durable construction makes it suitable for both professional instrumentation and DIY scales.

✨ Key Features

• 🎯 High accuracy: Provides consistent, precise weight readings for dependable results.
• 🛡️ Durable construction: Made from aluminum alloy for strength and long service life.
• 📦 Compact design: Easy to mount and integrate into enclosures, fixtures, and prototypes.
• 📈 5 kg capacity: Measures loads from 0 to 5 kg for scales, automation, and research applications.
• 🔌 Microcontroller-friendly: Low-level output pairs perfectly with HX711 or similar ADC modules for use with Arduino, Raspberry Pi, ESP32, and other platforms.

📊 Technical Specifications

• Measurement Range: 0–5 kg
• Accuracy: ±0.02%
• Operating Temperature: -10°C to +40°C
• Output Sensitivity: 1.0 ± 0.15 mV/V
• Input Resistance: 405 ± 10 Ω
• Output Resistance: 350 ± 3 Ω
• Safe Overload: 150%
• Material: Aluminum Alloy

🔌 Integration & Compatibility

This load cell is a full-bridge strain gauge device that outputs a small differential signal proportional to load. For best results, interface it with a precision load cell amplifier/ADC module such as the HX711 before connecting to a microcontroller or SBC:

• Use an HX711 module (or equivalent) to amplify and digitize the mV-level signal.
• Compatible with Arduino, Raspberry Pi, ESP32, and similar platforms via the amplifier’s digital interface.
• Typical wiring (may vary by manufacturer): E+ (Excitation +), E− (Excitation −), A+ (Signal +), A− (Signal −). Wire colors often include red, black, white, and green (color codes may vary).
• Excitation voltage provided by the amplifier module; ensure it matches the module’s and sensor’s recommended operating conditions.
• Calibrate in software using known weights to achieve optimal accuracy and linearity.

🧪 Possible Applications

• 🏭 Industrial Weighing Systems: Suitable for manufacturing, packaging, and process monitoring.
• 🛠️ Home DIY Projects: Perfect for custom digital scales, smart kitchen scales, or weight-triggered mechanisms.
• 🔬 Scientific Research: Reliable for lab experiments requiring repeatable, precise measurements.
• 🤖 Automated Systems: Integrate into robots, feeders, and sorting machines for weight-based control and feedback.

💡 Engineer’s Notes

• Mount the sensor on a rigid surface and apply load in the indicated direction to minimize off-axis errors.
• Avoid exceeding the 150% safe overload limit to protect the strain gauges.
• Account for temperature effects within the -10°C to +40°C operating range when calibrating for best accuracy.

Whether you’re building a custom scale with Arduino or integrating into a Raspberry Pi-based data acquisition system, this electronics component delivers dependable performance and clean integration with common load cell modules and precision ADC front-ends.