Description Scales Kit is an electronic scale kit that uses four sets of half-bridge resistive strain gauges, with a total weighing capacity of up to 200kg. It is paired with the HX711, a high-precision 24-bit A/D converter chip with a built-in low-noise programmable amplifier. The HX711 supports programmable gain amplification of 32, 64, and 128, and provides a 10SPS output data rate. When used with an M5Stack main controller, the kit can be used to quickly build an IoT weighing application. Note: The Scales Kit requires a weighing panel to function, and the side length of the panel should not exceed 50cm. Features Total kit capacity: 200kg HX711 high-precision 24-bit ADC Programmable gain amplification: 32, 64, and 128 10SPS output data rate Four half-bridge resistive strain gauges Output sensitivity: 1.0±0.1mV/V Non-linearity: 0.3% F.S Overall accuracy: 0.3% F.S Zero output: ±0.3mV/V Input/output impedance: 1000±5Ω Specifications Specification Parameter Weighing Capacity Up to 200kg ADC Chip HX711 high-precision 24-bit ADC Programmable Gain Amplification 32, 64, 128 Output Data Rate 10SPS Strain Gauge Type Half-bridge resistive strain gauge Output Sensitivity 1.0±0.1mV/V Non-linearity 0.3% F.S Overall Accuracy 0.3% F.S Zero Output ±0.3mV/V Impedance Difference 0.8Ω Output/Input Impedance 1000±5Ω Product Size 105.0 x 65.0 x 40.0mm Product Weight 5.2g Package Size 152.0 x 82.0 x 20.0mm Gross Weight 113.2g Applications Electronic scale design IoT weighing applications Product List 4 x Half-Bridge Resistance Strain Gauge 1 x Unit Weight 1 x HY2.0-4P Cable (20cm) 4 x Double-Sided Adhesive Tape (39 x 20 x 0.8mm) 4 x Double-Sided Adhesive Tape (39 x 12 x 0.8mm) 1 x Sensor Wiring Terminal Resources Official Documentation Scales Kit Model Size PDF HX711 Datasheet HX711 Arduino Library Scales Kit with M5Core Example Scales Kit with M5Core2 Example Scales Kit with ATOM Example Scales Kit with M5StickC Plus Example Scales Kit with M5Paper Example FAQ What is the maximum weighing capacity of the Scales Kit? The total kit capacity is up to 200kg. What ADC chip does the kit use? It uses the HX711 high-precision 24-bit A/D converter chip. What gain settings does the HX711 support? The HX711 supports programmable gain amplification of 32, 64, and 128. Is calibration required before weighing? Yes. The official documentation states that calibration is required before starting to weigh. Does the kit require a weighing panel? Yes. The Scales Kit requires a weighing panel, and the side length of the panel should not exceed 50cm.
