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.

What is the use of HX711 module?

What is the HX711? The HX711 is a precision 24-bit analog-to-digital converter (ADC) that is designed for weighing scales and industrial control applications to interface directly with a bridge sensor. It is specially made for amplifying signals from cells and reporting them to another microcontroller.

How does an HX711 work?

HX711 is an electronic scale module, whose working principle is to convert the measured changes in resistance value changes, through the conversion circuit into electrical output. The module communicates with the host computer through TTL 232.

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.

What is HX711?

Based on Avia Semiconductor’s patented technology, HX711 is a precision 24-bit analog- to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. All controls to the HX711 are through the pins.

What is the output of HX711?

Output Sensitivity: 1.0 ± 0.1 mV / V. Two selectable differential input channels. On-chip active low noise PGA with the selectable gain of 32, 64 and 128.

How do you read HX711 voltage?

The HX711 chip provides the reference voltage on pin 6 (Vbg), which measures 1.2544 V for board A and 1.2645 for board B, apparently corresponding to half of the reference voltage value used by the ADC and with Based on this value, we calculate the FS Calc. = (Vgb x 2) / gain from Table 1.

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).

What is S type load cell?

S-Type load cells are low-cost and high performance side mounted load cells suitable for a number of weighing and general force measurement applications. They come with a 6-foot strain relieved integral cable with pigtail leads that are stripped and tinned for electrical interface.

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 system?

A load cell (or loadcell) is a transducer which converts force into a measurable electrical output . Although there are many varieties of force sensors, strain gauge load cells are the most commonly used type. Except for certain laboratories where precision mechanical balances are still used, strain gauge load cells dominate the weighing industry.

What is a digital load cell?

A digital load cell transmits data from each load cell, compared to analog systems that use only one cell’s electrical voltage. This information uses a binary language, similar to computers, and because this binary information is safe from interference from radio signals, electromagnetism ,…

What is a load cell amplifier?

Load Cell Amplifiers. Once the load cell measures the load or force, a load cell amplifier is then used for signal conditioning so the signal can be amplified and converted into an output value. The output value is used by brakes, clutches and drives to determine an accurate speed and torque for operation.