By What is HX711 module?
HX711 module is a Load Cell Amplifier breakout board for the HX711 IC that allows you to easily read load cells to measure weight. This module uses 24 high precision A/D converter chip HX711. The chip lowers the cost of the electronic scale,at the same time,improving performance and reliability.
How does the HX711 work?
The HX711 uses a two wire interface (Clock and Data) for communication. Any microcontroller’s GPIO pins should work and numerous libraries have been written making it easy to read data from the HX711. Load cells use a four wire wheatstone bridge to connect to the HX711.
How do I program my HX711?
- Step 1: Mount the Load Cell. First we are going to mount the load cell.
- Step 2: Wire the Load Cells and HX711. See the wiring diagram for how to connect the load cells, HX711, and Arduino.
- Step 3: Add HX711 Library to Your Arduino IDE.
- Step 4: Calibrate and Weigh!
- 5 People Made This Project!
- 35 Comments.
What is DT and SCK in HX711?
DT and SCK must be connected to digital pins of the Arduino. In this tuorial, DT is connected to digital pin #4 and SCK is connected to digital pin #5. Moreover, the GND pin must be connected to one of the Arduino’s GND pins and the VCC pin has to be connected to the 5V signal of the breadboard.
Is HX711 an SPI?
The digital interface to the HX711 is a proprietary SPI-like interface that uses a clock (SCK) and data (DOUT) line.
Is HX711 an amplifier?
Our Grove – ADC for Load Cell (HX711) is a 24-bit A/D converter designed specifically for the load cell. It contains an on-chip low noise programmable amplifier with an optional gain of 32, 64 and 128.
What is load cell working principle?
Load cell is a sensor or a transducer that converts a load or force acting on it into an electronic signal. Capacitive load cells work on the principle of change of capacitance which is the ability of a system to hold a certain amount of charge when a voltage is applied to it.
How do you connect two load cells together?
To connect multiple load cells in parallel, use a watertight junction box, with a suitable terminal strip, or a multi-channel transmitter in the box. The cables in and out of the box or multi-channel transmitter require the installation of cable clamps.
Which protocol does HX711 use?
The HX711 integrated circuit module can be used to communicate with two load cells. Load cells are used to weigh objects both at industrial level and for smaller weights. The module is a high-precision, 24-bit, and communicates with Arduino development boards on a two-wire protocol (clock thread and data thread).
Is HX711 an I2C?
It has all the features of the HX711 but with additional library support, a true I2C interface, and no soldering required! The HX711 uses a two-wire interface (Clock and Data) for communication. Check the hookup guide below for more information.
What is load cell calibration factor?
A calibration factor is determined based on the use of a master load cell, or combination of master load cells, meeting the requirements of ASTM E74. The calibration process applies load using three cycles. The first cycle is a relatively rapid cycle from 0 to 100 percent of the calibration.