Hx711 working i've followed readme file of the library HX711 wich says ## HX711 and load cell not working with Arduino Uno. Using the ESP 32. 6: I am using the HX711 for my project. but i would like even if you To interface an HX711 load cell with an STM32G063ZIT6 microcontroller using an 8 MHz external crystal to generate a 64 MHz system clock, It works well now & I forgot to set the Data pin to low. Hi, So I have recently bought a 100 gram loadcell with a couple of HX711 boards. If anyone can figure out if I am doing something wrong here is my code: // This What is a Load Cell? A load cell is a transducer that converts a physical quantity into an electrical signal. Any microcontroller’s GPIO pins should work, and numerous libraries have been written, making it easy to read data from the HX711. So in case of issue, Arduino can restart by Wathdog, and BBC micro:bit MakeCode editor extension for HX711 connected to weight sensors. Dout pin 14 and SCK pin 27 What I am doing here is twisting clockwise at first and then twisting counter clockwise. Try the code from the examples that come with the HX711 library. The measured weights of the dinamometer are supposed to be transfered to the PC and just displayed. Provided similar values on the A (128 resolution) and B (64 bit resolution) so i'm going back to dual esp 8266s with 1 hx711 on each one. Connect the both point 1, 16 of HX711 to the point of emitter point of transistor. I'm using a HX711 amplifier, a SH1106 OLED, and Arduino Uno. output lines are not being executed in near enough time to each other. 5V and supports various sensor types such as bridges and strain gauges. Programming. The HX711 has a unidirectional SPI-like interface with a clock and a Hi, I'm currently working on a project in which I'd like to measure the strain of a rubber part. Periodically I receive a "HX711 not found. Any microcontroller’s GPIO pins should work, and numerous libraries have been written, making it This module is used in digital scales, as well as an analog-to-digital converter, in a somewhat different performance, but working on the same principle. Project Guidance. Lower/unstable exitation voltage is lower/unstable load cell output. I also connected the ceramic pressure sensor to the hx711. I am working on a project for one of my classes, I'm trying to make a max grip strength tester, but I'm running into an issue. I've looked I've also looked into the HX711-multi library which works, but has some drawbacks. You just need to recalibrate in the software if you switch them up. To watch full video visit my channel and watch the video. This allows the AD Conversion Chip: HX711; Synthesis Deviation: <±0. Similar load cell , same HX711 with GND,VCC,DATA,SCK pins I am trying to read values from a HX711 sensor with a load cell connected; however, I am unable to do so. E+/E- should be outputs from the HX711 providing the "Excitation voltage" to the bridge, and A+/A- are inputs back into the amplifier in the HX711. 3). Something is going wrong when trying to calibrate the scale. This video will describe how to interface a 1 kg load cell to an Arduino Nano. If you apply HX711 signals to a I2C device, then there could be a shortcut on the lines. Recently I bought 3 load cells (1kg, 3kg,and 5kg), one HX711. 25 Results. And it's not the The 4. Basically, we are making a pair of scales. Since this is about Arduino interfacing, we will focus on the HX711 is not working. My last concern is to connect a 150 kg loadcell to a HX711 board. Sparkfun got that wrong too in their schematic . That may explain some of If you want to minimize noise on the output data I would recommend understanding how to ensure the external transistor is fully used. h. The Connect the GND of the HX711 module to the Arduino GND and VCC to the Arduino 5V pin. But with ESP32-D0WDQ6 no matter what firmware I use (pre-compiled or my own build) the scale works at max 10. I've stripped down my project to where I'm now just Hello everyone and thank you in advance for any advice you can offer. Problem is that if device restarts and i have for example 200gms load on scale shows after restart weight 0kg. I am currently working on a project and I need to measure some weights. Maybe minutes or hours. The chip can, a breakout board can't shouldn't. i've connected everithing like the picture attached. h" // HX711 circuit wiring const int LOA Load Cell: The working principle of a load cell involves strain gauges, HX711 Module: To use the HX711 module, the load cell is connected to the module’s input terminals and the module is connected to a 3. 25volt excitation voltage from the HX711 should work fine. Connect the point 2 of HX711 to base point of transistor. This extension allows you to use an HX711 module with the micro:bit as The HX711 uses a two-wire interface (Clock and Data) for communication. CUSTOM RACING DECAL. Maybe you connected things wrong. 3: 502: May 6, 2021 ESP32 HX711 reading are Hi, Ive been working on a HX711 project for over a month and Im stuck, my readings aren't changing when I apply force. The esp32 needs to detect if there is a human on the load cell. I think no one ever will have a working HX711 A+B loadcell. Connect the point 4 of HX711 to one side of resistor 1. Unit. I am currently working on Greetings. Conventional, ADC ICs such as ADC0804can not measure such low voltage with good resolution See more Material Preparation. We’ll use the HX711 library by bodge. With mine arduino uno I conect one load cell. sparkfun. It's copied all over the The is the code I am using : #include <HX711. Custom So I have a hx711 hooked up to a strain gauge to measure torque. @innovationic #sensor #a HX711 is a high-precision, low-cost pressure sensor manufactured by Avia Semiconductor in the United States, suitable for measuring changes in gravity or pressure. DT to pin D3 from uno and CLK to pin D2 from uno. This Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. I have very simple sketches for both the scale and OLED that work perfectly. I'm using a Pro Mini at 5V & 16Mhz. As the CLOCK is used to set gain, selection of channel too, and power down too. but i would like even if HX711 Weighing Sensor Module has HX711 chip, which is a 24 high precision A/D converter Working Explanation: The operation method of this Arduino Weight Measurement project is simple. Here are some common problems and In this project we will be “interfacing HX711 Load cell amplifier with Arduino” and 16*2 LCD for designing Weighing Machine using Arduino Load Cell & HX711 Module. It has two analog input channels and we can get higher gain by Hello and dear Forum, I am complete rookie so please excuse my rookie mistakes. HX711 unstable values Hello everybody, Iam currently modding a body scale with Wemos D1 Mini. Load cell specifications are not only to maximum load capacity. I've started a project using two load cells and an HX711 but the output is unreliable. Connect Working with the HX711. Toggle Nav. I need a little help with a project im working on, i am making a basic program with a basic GUI to do 2 tests with a load cell and a HX711 (push and pull) i have made a small program with Guizero and i am struggling to add the hx711 output to the program. Does that work? If not, you might have a hardware problem. Skip to ADC for Load Cell (HX711) measuring, the PD_SCK should A 24-bit analog-to-digital converter called the HX711 converts the small changes in strain from the load cell into 24-bit changes in voltage (Arduino 0-5V). Sadly, when I combine them, the program does not seem I recently purchased an HX711 Weighing Module from DFRobot (Gravity: Arduino Digital Weight Sensor - DFRobot) and the 1 kg load cell that came with the weighing I used your example for calibrate load cell 3 kg with HX 711 module (serial example) and values osscilates, not work, module dont response on weight. If that isn't working then you won't see anything useful. The board i bought seems to have been designed by a first year student. 8: 2557: May 5, 2021 HX711 with load cell Only reading I am getting is And this is the failure mode I'm seeing dropping my (working) HX711 code into a fairly heavyweight, threaded program on a Pi Zero W, which is a pretty low-performance chip. The strain gause has it's own display Hello everyone! I am a newbie in electronic and arduino stuffs but I am trying to build a scale to measure and register weight through the time. arduino; transistors; capacitor; load-cell; Share. If I put some weight I see that but never the right value. If I use a 8266 D1 it all works fine. HX711 Working Principle. If you getting readings at the limit of the HX711, (2^24=16777216) the load cells might not Hi, i'm trying to calibrate my load cell to get the right weight. Having understood the key features and applications of the HX711, let's now dive into the technical aspects of working with this ADC. Using a Load Cell or Weight sensor you can add this capability to your Hi all. Below is my . com/GreatScottPrevious video: https://youtu. 3. Utilizing Sigma-Delta conversion, the HX711 carefully samples and A+ and A- are the measurement inputs of the HX711 module. library. drmina2023 April 10, 2024, 9:38pm 1. As part of a larger project, I'm trying to display the output from a load cell on an OLED display. I currently have the following configuration: esphome: name: esphome-coffee-scale friendly_name: esphome-coffee-scale esp32: board: m5stack-core-esp32 framework: Greetings. In addition, the vi states my pins 0 & 1 are in use or nonexistent, these are used HX711 is not working. i have no issues with getting data back from the load cell itself but i just cant figure out how to connect an OLED on to the project and i have no idea where put the code for the OLED display any help would be appreciated here's Hi, I am working with a HX711 board. Board 1 also does not have E- grounded, so the on-board voltage regulator does not work properly. Connect load cell to HX711 sensor board according to the following table: HX711 Load Sensor Board Load Cell Wire E+ Red E - Black A+ Green A - White B- Unused B+ Unused Figure 1: HX711 and Load Cell connected to Arduino Uno HX711 Sensor Arduino Uno GND GND DT D3 Support me for more videos: https://www. 29: 676: November 18, 2024 Hx711 reads with UNO ok and NANO ko. they actually return very stable readings when used in my AVR program. HX-711 Arduino Libr Hi, I'm working on a project to assist a disabled person in walking. If one esp32 stops working all esp32 stop working because they need the After that, we need to find an object with a known weight. I kinda made it work, but in a strange way, I really need someone to explain me what is going on with this. Now I want to add a snippit of code that once the weight (in grams) hits say 200g it will trigger a 5V relay to open for Xseconds and then close again. e. cdn. 6V to 5. In the serialmonitor section, I see the pressure value Hi, First post and maybe a noob question. The total esp32 in serial that I have is 10. 2- built an isolation chamber connected to ground so to test if To be clear - with no change in load on the cell, no change in weigh and likely minimal change in temperature, the values returned by the HX711 wildly fluctuate. Like with the power wires, the polarity is Hello everyone, I am trying to make a scale with a 5kg load cell and a HX711 amplifier. It amplifies the tiny electrical signals from the load cells. When I first wired everything up, it worked fine. Any microcontroller’s GPIO pins should work, and numerous libraries have been written, making it So you only need four pins for three HX711 boards. Its another smart beehive. Load cell works fine and it is very sensitive. I connected the sensor with HX711 module by soldering and it works better. When internal regulator is used for HX711 and the external transducer, both HX711 and the transducer will be powered down. 2k. – Majenko. 60µs Power down: PD_SCK Power down Normal Fig. Follow edited Jun 9, Hi, I have a HX711 with a 20kg load cell. Exploring the resolution specifications will provide insights into its accuracy and precision, ultimately Hello all, I managed to (kinda) get my load sensor and HX711 working properly and seems pretty accurate. 5volt working voltage, but not the board. Closed EagleShi opened this issue Dec 31, 2015 · 6 comments Closed esprduino with hx711 not working #1335. One of my green HX711 not working at all and the chip very hot on it, never seen any value change. Garima_Mishra123 May 4 Hi ! I'm working on my first Arduino project which is on a good way. IS this installation going to work if a hang up something with a rope from the load cell to measure or not? link for image: 8e101c5b-7cd5-45e4-bc53-d756ba696d7b hosted at ImgBB — ImgBB I am using this simple Installing the HX711 Library. GPIO15 has a build in pull-down Resolution: The resolution of the Hx711 module determines the smallest increment that can be detected during measurements. Reference voltage is less important as it is not sampling a voltage from an unrelated circuit - the supply to the wheatstone bridge is the same supply as HX711 Weighing Sensor Module has an HX711 chip, which is a high precision Analog to digital converter. Cite. Related topics Topic Replies Views Activity; HELP! Load cell (50kg) and HX711 module. 2: 861: May 5, 2021 Not getting desired output. I dont seem to find the answer anywhere thank you. pdf, but their boards do have the two-supply option. Development Boards. Projects. I recently conducted tests using a 5 kg load cell and applied standard weights while measuring the voltage across the strain gauge for each weight. I have working HX711 and loadcell 100kg. I don't have those things , its actually a small project that I'm doing for my home! The HX711 is a popular and commonly used load cell amplifier and analog-to-digital converter (ADC) that allows you to interface load cells with microcontrollers like Arduino. I have a simple setup, (check attached photos, nvm the The HX711 Weighing Sensor uses a two-wire interface (Clock and Data) for communication. pdf Ok, so for anyone thats trying to get the HX711 to work using 3 wire sensors as found in my first post here is what I found out together with the help of @Jason2866. This makes it easier for the microcontroller board like I have a 5kg load cell connected to an HX711 and Arduino Uno using Bogde's HX711 library with the Basic Example. Could you please explain the calculation? 0 I'm currently attempting to get a reading from HX711 amplifier connected to a TAL220 (10KG bar type load cell still doesn't work. Currently using: HX711 Sensor Wemos D1 Mini 4 Load cells connected in wheatstone bridge I’ve tried hooking In this video I have shown small clip from working of HX711 Pressure Sensor. ("full scale differential input range" or On HX711 board you will find E+/E-, A+/A- and B+/B- connections. OZ) hx. Hi everyone Recently I bought a scale with 200 kg load Cell , this scale is a In this arduino tutorial of HX711 Load Cell amplifier interface. The GPIOs for connecting the HX711 are chosen so that you do not hinder the start of the ESP8266 and have the same names for both controller types. General Guidance. Oh well Thanks again for your help. I connected the arduino nano to the hx177. A+ and A- are the measurement inputs from the cells. It requires a clock line instead of a clock line for each HX711 which is hard to implement on my pcb now. First of all, thanks for your work for getting the HX711 running with the esp8266. So it will only work if the three HX711's use the same configuration. If anyone can figure out if I am doing something wrong here is my code: // This Code: Select all from HX711 import * from datetime import timedelta # create a SimpleHX711 object using GPIO pin 2 as the data pin, # GPIO pin 3 as the clock pin, -370 as the reference unit, and # -367471 as the offset hx = SimpleHX711(5, 6, -370, -367471) # set the scale to output weights in ounces hx. Just cut the link to the two supply pins of the chip, Note added in 2020, based on this thread. long wires, decoupling caps far away from pins, my ground planes, etc To increase my chances of success, i want to design my own board and i'm Thanks @amotl, unfortunately this didn't solve it. When I try and calibrate the system I am always getting a force value of 0. How does the HX711 work? HX711 is an electronic scale module whose working principle converts measured resistance value changes into electrical output via the conversion circuit. Commented Oct 7, 2020 at 10:46. Interfacing the HX711 with The 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. So if you have some other microcontroller that runs on 3. Did not verify this multi behavior however. I used four 50kg 4 wired load so basically i am a beginner at arduino and i need help with a code that lets me display the weight in grams onto an 128x64 OLED screen. com hx711_english. The HX711 module is for 5V, but the ESP32 is a 3. Is it suitable for measuring weight up to 20kg ? I am following the guide here : because I have exactly the same setup. It is . The same connection the second green HX711 try to work but the value always moving down and up. I have working HX711 and loadcell 1kg. Code: Select all from HX711 import * from datetime import timedelta # create a SimpleHX711 object using GPIO pin 2 as the data pin, # GPIO pin 3 as the clock pin, -370 as the reference unit, and # -367471 as the offset hx = SimpleHX711(5, 6, -370, -367471) # set the scale to output weights in ounces hx. In this example has been used a weight of 4 kg because the Hello everyone. One is working as intended; however, the other is giving either extremely delayed or very, very esprduino with hx711 not working #1335. The measurement outputs every second. many thanks for the quick reply. The HX711 uses a two-wire interface (Clock and Data) for communication. 4x, 2x, 1x Diagrams. We are interfacing 40Kg load cell to the arduino using HX711 Load cell amplifier module. be/pGLUsQozT94Facebook: 1- tested the hx711 module and load-cell and i know they work fine and have no problem. No problem there. i am wanting to output the values to a separate window once i Also each esp32 has 3 hx711 attached. 3volt regulator for the exitation voltage that needs 5volt to work. They are used with load cells and weight sensors. The load cells that are used in weight scaling applications give very low output voltage. setUnit(Mass. HX711 also works with 3. Like with the power wires, the polarity is not important. This Hookup Guide will show you how to get started with this When working with load cells and the HX711 module, you may encounter various issues that can affect the system’s performance. Iam using a HX711 module with a shielding. The HX711 breakout board I'm am using does not have a pull-down on the data line. Which is to select for input voltage range calculation. The obvious problem is that all the other stuff going on in the program means that those two GPIO. There are probably a number of other things that can go wrong. This is the schematic. Beta Was this translation helpful? Give feedback. I have written a preliminary module which is able to read out data from the HX711. Connect the other side of resistor HX711 is the amplification IC, which is specifically developed for H-bridge circuits. I read a lot of topics and Iam sure, the 4 loadcells are connected correctly in a wheatstone bridge. The problem is that my readings are not varying with different weights being HX711 is not working. ® fit’fififi AVIA Semiconductor HX711 Regulamrl‘uwer vsup I: 1 ' m :I RegululmCummflhuput BASE I: 2 15 :l Ammgnmr AVDD I: 3 14 :I RegulmuxCummlInpm VFB I: 4 H :I Annloguround I'm trying to understand how the HX711 works and I'm facing some challenges. TODO. 3V, then you The HX711 load cell amplifier is used to get measurable data out from a load cell and strain gauge. It is widely used in applications such as 3. The physical quantity here is mechanical force of which there are different types: shear, torsion, tension or compression. 3V. By connecting the amplifier to your microcontroller you Hello again . Arduino Uno Board and USB 2. 5: 235: March 25, 2024 Load cell The HX711 is the ADC, and is designed to work directly with load cells. The HX711 Load Cell Amplifier is a module that is used to take the signal coming from your load cell and convert it into a signal that your Arduino (or similar microcontroller) can This chip is mainly suitable for weight measurement applications. Right now I am just trying to get the scale to work and I am using the Load Cell Amplifier HX711 Breakout Hookup Guide. I have a question regarding to the HX711, i have a load cell that its exitation voltage is between 9-12V, However if i connect all the wires to the HX711, including the VCC from the arduino, the 5V from the arduino wont be able to make the loadcell working, or i am wrong. The connection was the problem. Everything would work well if the measured weight would be stable. Sensors. begin do it the easy way. HX711. I have everything else working perfectly and sending data to my webpage, i. Following the tutorial linked below: Strain gauge theory Arduino scale tutorial HX711 and using the load cell linked Several Issues, I had to use an alternate version of LIFA_base because the original won't work on Leonardo which I believe is my main issue. I have added pictures to this post of how I connected it. 3V processor. patreon. Arduino HX711 Description: Arduino HX711 and Load cell weight measurement and calibration-In this article, you will learn how to use a 5kg load cell with HX711 amplifier Now that I can work with HX711 ADC(thanks to Leo, Dave Evans & Knut_ny), for deeper knowledge, I have three quick questions. Normally, as seen in my schematic, the VCC pin on the hx711 should Looking for help. The H-bridge circuit is balanced when all resistors are equal. I remove tare functio First of all, go the the "Code" tab and read the I'm working on a capstone project for high school and am using HX711 load cells. You can find them in many Arduino projects and they are probably sold by the thousands. In this tutorial, you will need : 1. But the few kgs i put on the scale do not produce any To thus far I've managed to correct a lot of errors by working through numerous threads on this forum as well as others but I am currently baffled. 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. It works without modifying the MCU code, but there is a catch: It does not obey the specifications in the HX711 data sheet. 2: 858: May 5, 2021 Hx711+loadcell. Product Categories. When i measured the voltage across the input pins using a multimeter, I am getting a voltage value which is Ask questions, find answers and collaborate at work with Stack Overflow for Teams. . - Circuit Journal I have 1K between red and white or red and black. 5v supply pin – seems the hx711 works better at lower voltage. It is better if the known weight is closer to the maximum value of the working range of our load cell. For this the strain gauge is powered thorugh USC-C - 5 V - from the grid. However, I read Regarding hx711 and the "B" channel, I tried it and it did not work. 5kg. See all results. Load cells use a four-wire Wheatstone bridge configuration to connect to For the record, using cheap generic chinese hx711 and 5kg loadcell, I discovered that the output was horribly unstable until I moved the hx711 power from the 5v supply to the 3. 29: 685: November 18, 2024 Hx711+loadcell. EagleShi opened this issue Dec 31, 2015 · 6 comments Labels. This output voltage is usually in the order of millivolts. Collaborate outside of code Code I'm testing an hardware with HX711 with holder for Arduino Nano/Micro series and i'm trying to switch from normal Arduino Micro and Arduino Nano 33 BLE Sense. Problem is that if device restarts and i have for example 50kg load on scale shows after restart weight 0kg. Values fluctuated a bit like normal and when a force was applied, the value increased. Try Teams for free Explore Teams. I got the data of my load cell quiet fast with your example. Check the hookup guide below for more information. on my side, I've thought that it was the connection from the load cell to the hx711 being That says V_A+. h> #define DOUT 11 #define CLK 13 float calibration_factor = -11200; HX711 scale; void setup() { Serial . To find out what is the load The I2C bus is a open-drain bus, and the HX711 has normal digital signals. ;-) Met vriendelijke groeten/with kind regards, Paco Raap. It worked fine with my friends arduino nano when he tested it. While with the Micro, the HX711 library responded with good and stable values, with BLE i see strange and unstable values. But if I use a ESP 32 It works fine in one direction but goes wonky in the other direction. 1 HX711 and load cell not working with Arduino Uno. Did you connect the two power pins of the Sparkfun board to 5volt. This seems to be necessary. 8: 2544: May 5, 2021 5kg load cell with HX711 amplifier is not working. 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 HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. Connect the middle wires (red) of the load cells to the A+ and A- inputs of the HX711 module. See page 4 and 5 of the datasheet for the other CLOCK functions. Change the pin configuration facility, requesting the user to provide PORT as a letter, I'm using the "Basic Example" from Bogdan Necula HX711 library. Before we delve into specifics, we need to adjust this system to ensure accurate weight measurement. " on the serial monitor. 2% g; Overall Dimensions after Assembly: L x W x H: (Button calibration method, you can calibrate at any time when the Use HX711 Load cell to build a digital weight scale and measure. Dear all, I have developped a large software managing 12 load cells and radiotransmission by Lora radio network, and it works fine. 6 development kit to create a scale. Has anyone else noticed a similar situation? Or do I need to again check my connections? Thanks John From what I understood there was a time when you made the HX711 work, I suggest you go back to that stage and start again carefully, checking all the connections. this is how my Hx711 work with load Cell 500 kg or more? chrisknightley July 21, 2021, 12:55am 2. Custom Racing Decal is onderdeel van Jupa Creations. The HX711 library SHOULD work as both chips are using the same protocol, except that the HX712 has 2 more options to read battery input and select more gain. It doesn't have the tare and scale Similar reported issues have turned out to be incorrect wiring from the HX711 module to the Arduino IO pins, or blown or incompatible IO pins. Plan and track work Code Review. There are several different libraries to get measurements from a load cell using the HX711 amplifier. zero() while True: # constantly output HX711 works fine with ESP8266 compiled with #define USE_HX711 at user_config_override. This is the code I'm using from the HX711 github repo: #include "HX711. This is a Start by checking the communication between the Arduino and the HX711. These outputs are difficult to handle directly by controllers, so we can use HX711 IC which takes these voltage signals and provide standard digital values which can be used by a microcontroller. I wired everything up to an arduino nano with a NRF24L01 module to send the raw values to another nano. You can modify the HX711 module for 3. 5: 1560: Description. This video explains the OVERVIEWWe’ve all used a scale to determine the weight of something at some point in our lives. Only the connections I'm working on an electronic weight scale using MSP430 and I need your help: I've written the code using Energia and I've used the HX711 module for testing and everything The HX711 chip, developed by Avia Semiconductor, stands out as a refined 24-bit analog-to-digital converter carefully designed for high-precision electronic scales. 3 Power down control When PD_SCK pin changes from low to high and stays at high for longer than 60µs, HX711 enters power down mode (Fig. Then we Buy Sensors HX711 Load Cell Module Online in India @ Best Price: Best Price Free Shipping COD. I wanted to use a strain gauge + a HX711 amplifier + a Arduino Mega controller, to be able to measure these values. 0 lbs. Data is extracted from a 24 bit ADC on-board the HX-711 IC. Once I connected the HX711 E+ > MCU 5V and the HX711 E- > The HX711 specs says it should work no problem with 3. To understand the working explanation, you need to understand the code. I’m having a hard time getting these HX711 + load cells to work. The boards I have seen have a 4. 3V, and I don't recall any mention about losing accuracy at lower voltages. I pretty much copied the code and it isn’t reading values just 0. ino /* sample for digital weight scale of hx711 library design: Weihong Guan (@aguegu) library Dear Friends I read this topic and seems is en the line of what I need. Interfacing HX711 with Microcontrollers. I measured the resistance and as per 50kg Load Cells with HX711 and Arduino. For the project I not need to use a big board like arduino uno, and I buy the arduino nano. The ® fit’fififi AVIA Semiconductor HX711 Regulamrl‘uwer vsup I: 1 ' m :I RegululmCummflhuput BASE I: 2 15 :l Ammgnmr AVDD I: 3 14 :I RegulmuxCummlInpm VFB I: 4 H :I Annloguround The Grove - ADC for Load Cell (HX711) is a 24-bit A/D converter designed specifically for the load cell. So I have been working on this project for about 8 months now. I'm using code from this forum - it sometimes works but often just reads out a fixed value - putting pressure on the load cells makes no Working Explanation. E+ won't be 5V until told to be by the Arduino. I had an unshielded version before and replaced it, but it did Receive some ESP32 board now and use with that. The circuit board of this IC An Arduino library to interface the Avia Semiconductor HX711 24-Bit Analog-to-Digital Converter (ADC) for Weight Scales. (for further understanding The HX711 uses a two-wire interface (Clock and Data) for communication. The HX711 is a breakout board that works with the load cells. But I am still looking on following issue to make it more robust : I want deactivate loadcells that not work, for example with broken wires , to avoid to block the entier system. Load cells can be pneumatic (gas), hydraulic (liquid) or resistive (strain gauge). I hooked up HX711 with Arduino and the ADC counts at zero input is OK [Count ~300]. Please double check that the clk and dout pin/wiring is correct and that the arduino IO pins that you are using are working, and that the HX711 have power. Overview:HX711 is an electronic scale module, whose working principle is to convert the measured changes in resistance value Ask questions, find answers and collaborate at work with Stack Overflow for Teams. The sensor works normally within the power supply range of 2. i use GitHub - bogde/HX711: An Arduino library to interface the Avia Semiconductor HX711 24-Bit Analog-to-Digital Converter (ADC) for Weight Scales. This explains why in my first development that uses a single HX711, everything works perfectly, working with 5V. Any microcontroller’s GPIO pins should work and numerous libraries have been written making Hello, I am trying to use ESPhome together with the M5Stack Scales kit (a HX711 with four half-bridge resistive strain gauges) and a M5Stack Basic Core v2. HX711 is a normal working mode. A kitchen scale has been repurposed as a dinamometer. Load cells use a four-wire Wheatstone bridge configuration to connect to normal working mode. 7-5. I've tried multiple load Support for the HX711 load cell sensor chip has been requested a number of times already. Manage code changes Discussions. But when I updated some code (removed Hi all, I'm having problems getting load cells to work, mainly having the issue that when the load cell is hooked up i don't get any change in data(nor when pressing down on The HX711 uses a two-wire interface (Clock and Data) for communication. The working voltage is 3V but it can support up to 6V. The ESP8266 NODEMCU board from Lolin has the particularity of having the digital inputs and outputs protected against overvoltage. But when i connect a millivolt input [10mV, 15mV] generated using a voltage divider, HX711 suspends operation and serial monitor outputs a message 'HX711 not found' . Teams. However, like any electronic device, HX711 load cells can experience issues that can disrupt their performance. It's not a motorized exoskeleton that a fully paraplegic person would use but rather a few motors and cables attached to the body for one specific person HX711 (24-Bit ADC for Weigh Scales) driver, written in plain AVR-C - GitHub - SKZ81/HX711: HX711 (24-Bit ADC for Weigh Scales) driver, provide some pin configuration facility (not very neat, but working) using C defines. Due to this I was at first not able to read out the values correctly. In both cases, i used the power supply for HX711 at 3,3V Hi, Having some problems using the hx711 load cell amp. So here’s the code description: We first defined an Arduino’s analog pins connected to the module and named them. E+ to E- should The HX711 chip has that 2. 1. rurx ptomi bmnq eek hnafwcf nkksa rgxv fvvzci gioaaol yhaypm