YZC-133 5kg Load Cell Sensor with Wires 80 x 12 x 12mm

This load cell outputs a very small differential signal of approximately 1.0 mV per Volt of excitation. You must use a dedicated instrumentation amplifier designed for strain gauges, such as the HX711 24-bit ADC module. The HX711 provides the necessary gain, signal conditioning, and digital interface for microcontrollers like Arduino or ESP32.

The load cell has four pre-attached wires, typically color-coded as Red (E+), Black (E-), Green (A+), and White (A-). Connect these to the corresponding E+, E-, A+, and A- inputs on the HX711 amplifier board. The HX711 then communicates with your microcontroller via a simple two-wire serial interface (DATA and SCK pins). Ensure you provide a stable 5V or 3.3V supply to the HX711.

Load cells are typically excited with a DC voltage between 5V and 10V. The recommended excitation voltage is often 5V, which is standard for HX711 modules. Applying 5V excitation will yield a full-scale output of approximately 5 mV (1.0 mV/V * 5V). Do not exceed the maximum excitation voltage specified by the manufacturer to avoid damaging the internal strain gauges.

Yes, multiple load cells can be combined in a parallel configuration, typically using a summing junction box, to increase total capacity or improve platform stability. For a standard four-corner scale setup, you would use four load cells. Their outputs are connected in parallel to a single HX711 amplifier, which averages the total signal. Ensure all cells are identical and mounted uniformly for accurate results.