HX711 Load Cell Amplifier + 1 kg / 5 kg cell
by Avia
SKU: PSA-CMP-HX711
No reviews yetTypical India street price
₹80–₹250
Weighing scale for smart dustbin / kitchen IoT.
Interface: 2-wire (DT/SCK)
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Concept
A strain-gauge load cell outputs microvolts; HX711 is a 24-bit ADC for that bridge.
A little theory
Wheatstone bridge. Gauge factor × stress → ΔR → differential mV. 24-bit delta-sigma ADC. In the classroom, treat HX711 Load Cell Amplifier + 1 kg / 5 kg cell as a intermediate part using 2-wire (DT/SCK). Typical India street price is about ₹80–₹250. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Calibrate with a known mass. library.read() → grams after scale factor.
Classroom & project use
- Digital scale
- Smart bin fill
- Force in structures
Buying in India
Precautions
- Don’t overload the cell
- Rigid mount; no twist
Specifications
| ADC | 24-bit |
| Rates | 10/80 Hz |
| Category | Sensors |
| Difficulty | Intermediate |
| Voltage | 5V |
| Interface | 2-wire (DT/SCK) |
Pinout
See module silkscreen: typically VCC, GND, and signal pins. Confirm labels against the seller photo — clones vary.
