Contents • • • • • • • • • • • • Introduction is based on HX711,which is a precision 24-bit analog-to-digital convertor designed for weigh scale and industrial control applications to interface directly with a bridge sensor.Compared with other chips, HX711 not only has a few basic function,also contains high integration,fast response,immunity,and other features.The chip lowedrs the cost of the electronic scale,at the same time,improving the performance and reliability. The input interface of this weight sensor module is used sensor interface,which is compatible with Arduino I/O port.The output adopts compact terminal that makes weight sensor module easier to connect the weight sensor.It's the best choose for electronic enthusiast to do some tiny home scale.

The weight sensor module can be combined with weight sensor on the market. We also help you to pick a small range of weight sensor. Specification 24-Bit Analog-to-Digital Converter for Weight Scales (HX711) • Two selectable differential input channels • On-chip active low noise PGA with selectable gain of 32,64 and 128 • On-chip power supply regulator for load-cell and ADC analog power supply • On-chip oscillator requiring no external component with optional external crystal • On-chip power-on-rest • Simple digital control and serial interface: pin-driven controls, no programming needed • Selectable 10SPS or 80SPS output data rate • Simultaneous 50 and 60Hz supply rejection • Supply Voltage: 2.6V~5.5V • Current.

Description This module uses 24 high-precision A / D converter. This chip is designed for high-precision electronic scale and design, has two analog input channels, programmable gain of 128 integrated amplifier. The input circuit can be configured to provide a bridge voltage electrical bridge (such as pressure, load) sensor model is an ideal high-precision, low-cost sampling front-end module. Specification • Two selectable differential input channels• On-chip power supply regulator for load-cell and ADC analog power supply• On-chip oscillator requiring no external component with optional external crystal• On-chip power-on-reset• Data Accuracy: 24 bit (24 bit analog-to-digital converter chip)• Refresh Frequency: 10/80 Hz• Operation supply voltage range: 4.8 ~ 5.5V• Operation supply Current: 1.6mA• Operation temperature range: -20 ~ +85℃• Demension: Approx.

Mar 2, 2017 - We are building the same Weighing machine by using Arduino and Load. Weight by interfacing Load Cell and HX711 Weight Sensor with Arduino. We have written a Arduino program for whole process, check the Code. SetCursor(0,1); lcd.print(' Measurement '); delay(1000); lcd.clear(); calibrate(); }.

36mm x 21mm x 4mm / 1.42' x 0.83' x 0.16'. When the serial monitor give u a value for reading, it means that u has succesfully interface your load cell. Now, you can set your own calibration factor by adjusting the value using the '+' or 'a' to increase the value OR '-' or 'z' to decrease the value. You have to calibrate only once for each load cell. NOTE: This tutorial only show you on how to interface HX711 with load cell.

We did not use the correct calibration factor. You have to set your own calibration factor for your load cell.

Check on this and to learn on how to set the calibration factor for load cells. Remember that each load cell with different weight ie.

Load cell 20KG, 60Kg and 100KG have different value of calibration factor. Thus, you will have to set calibration factor for each load cell with different weight.

Do you have a specific reason for connecting the white and green wire of the load cell the way you did? In your instructions, the white wire 'Output+ (O+), Signal+ (S+)+ or Amplifier+ (A+)' is connected to pin 3 (A-) in J1, which goes to pin 7 (INNA, Ch.

A Negative Input) of HX711, and the green wire 'Output- (O-), Signal- (S-)+ or Amplifier- (A-)' is connected to pin 4 (A+) in J1, which goes to pin 8 (INPA, Ch. A Positive Input) of HX711. Also, what do the notations '(S+)+' and '(S-)+' mean? Typo/copy-paste error?