The important part is to identify the middle wire. These extremely small changes can be acquired with strain gauges. We will use a push button to reset the weight value to zero. Please help me. Wiring the Load Cell to the HX711 Module and Arduino. Follow the directions in the terminal window. Working with a Load Cell and an Arduino We built a system that uses eight air-clamping cylinders (McMaster-Carr 62185K64) to push down on a piece of glass to seal it to a sidewall. Once you find the calibration factor update it in below code. 2. 2. 1. ... Click on the green "Clone or download" button and then "Download ZIP." ... Click on the green "Clone or download" button and then "Download ZIP." But it tends to drift over time slowly. Like with the power wires, the polarity is not important. Once the calibration is done, we can include that factor in our code. A push button is provided to bring the weight reading to zero, this function will be explained in detail at the end. Using Four Load Cells in a Single Circuit. To connect the HX711 to the Arduino you only need 2 pins (Clock and Data). Verify Your Load Cell Wires. This can be handy for creating your own industrial scale, process control, or simple presence detection. Open the Calibration example that came with the "HX711_ADC" library. Push-button Switch is a connected digital pin D4 of ESP8266. I have an arduino uno board,4 x hx711 and 4 load cells... And I want to weigh with 4 scales each separately, and each scales to activate a servo. You can follow our previous post in case you want to Weight Measuring Scale for lower weights: 10KG Weighing Machine using Arduino Load Cell & HX711 Module, If you want the Weighing Scale to be IOT Based You can check here: IOT Weighing Scale with HX711 Load Cell & ESP8266 on Blynk. HX711 also works with 3.3V. The easiest way to mount them to a wooden board it to 3D print a mounting frame. Everything works fine, but i would like to add a few things to make a scale. 3. //Change this to kg and re-adjust the calibration factor if you follow SI units like a sane person. I have used a push-button tact switch to reset the weight to zero. The HX711 is easily wired to the Arduino using any two digital or analog pins. Mounting the 50kg Bathroom Scale Module to a Wooden Board. Red (Excitation+ or VCC). Once you upload the calibration code, open the serial monitor and adjust your scale factor with known weight until you see the correct readings. Here the need of power supply for load cell and instrumentation amplifier solved by Arduino … Validate the wiring by measuring the resistance of both diagonals (red wires). Using a High-resolution ADC which can be interfaced with the Arduino. The project consists of Arduino, Load cell and HX711 load cell amplifier board and a computer. The HX711 Weighing Sensor uses a two-wire interface (Clock and Data) for communication. I also have an article about the four-wire load cells: Accuracy, according to the spec, is ±0.05% from the maximum rated value. Hello. Connect two 1k resistors to the A- input of the HX711 module. The resistance value between the outer wires is double 1 x 50kg (110 lbs). There should be three wires coming out of them. Also, you’ll see how to use the load cell module with Arduino. But all the load cells must be the same. Next, we will explore calibration and test the load cell … Learn How to interface a GML692 Weighing Load Cell Sensor with Arduino. It asks you to put a known mass onto the load cells and then enter the weight of that item. Description: HX711 and Arduino-This tutorial is based on the HX711 breakout board, Arduino Uno and a Load cell or Strain gauge.This tutorial explains step by step how to use the load cell or Strain gauge with the HX711 breakout board and how to write a basic Arduino Uno program to access the values and print them on the Serial monitor. I use HX711 with load cell and Uno. A base is also required to fix the load cell over it by using nuts and bolts. So first calibrate the whole assembly unit. Overview. 4. Digital Weight Scale using Arduino and HX711 Module (Load Cell) This project is to design digital weight scale that measures weight up to 10kg. Then it takes some additional time to reach back to zero again. We will finally display the measured weight in the 16×2 I2C LCD Display. Overview: 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. // Arduino as load cell amplifier // by Christian Liljedahl // christian.liljedahl.dk // Load cells are linear. Then finally the deformation of the strain gauge is interpreted by analysis electronics to determine the weight. you should verify the wires. Using a Single Load Cell. Then you can simply upload the code and hence your weighing scale is ready. relative to the rest of the unit. A step-by-step guide in video form. To connect the HX711 to the Arduino you only need 2 pins (Clock and Data). 4 x 50kg (200 kg / 440 lbs). So we will try to remove the error from the weighing scale. use 3.3V instead of 5V. The idea is when i put a, say, dish on it to press a button and set a value to 0. You will need one library to make the code compile. A push button is provided to bring the weight reading to zero, this function will be explained in detail at the end. since those are the default pins for the examples of the "HX711_ADC" library. It converts a force such as tension, compression, pressure, or torque into an electrical signal that can be measured and standardized. 4 x 50kg (200 kg / 440 lbs). So if you have some other microcontroller that runs on 3.3V, then you can This is required as load cell bends slightly when some weight is placed over it. So, connect the SDA & SCL pin of I2C LCD Display to D2 & D1 of Nodemcu respectively. The HX711 load cell amplifier is used to get measurable data out from a load cell and strain gauge. Connect the GND of the HX711 module to the Arduino GND and VCC to the Arduino 5V pin. The HX711 load cell amplifier is used to get measurable data out from a load cell and strain gauge. Clock. Using Two Load Cells in a Single Circuit. My Arduino skills are typically limited to uploading someone else's sketch to a board. It is not necessary to know which wire is for positive or negative strain. Each color corresponds to the conventional color coding of load cells : I need your help. Thanks in advanced. 4. Learn How to interface a YZC-161B Weighing Load Cell Sensor with Arduino. In this Arduino Tutorial we are interfacing 40Kg load cell to the Arduino using the HX711 Load cell amplifier module.HX711 is a precision 24-bit analog to digital converter (ADC) designed for weighing scales and industrial control applications to interface directly with a bridge sensor. You can use virtually any type you like but I used the Nano as it has the USB interface built-in and still only costs a few pounds. The greater is the mass the greater the error. This more-or-less matches my experience with it in short term measurements. https://circuitjournal.com/four-wire-load-cell-with-HX711, https://www.thingiverse.com/thing:2624188, The HX711 amplifier module with the 50kg load cells, It would be helpful to have some extra wires, Two 1k resistors if you want to create the single-cell circuit. The electronic weighing machine uses a load cell to measure the weight produced by the load, here most load cells are following the method of a strain … In this Arduino Tutorial we are interfacing 40Kg load cell to the Arduino using the HX711 Load cell amplifier module. Next, we will explore calibration and test the load cell … The project consists of Arduino, Load cell and HX711 load cell amplifier board and a computer. Verify Your Load Cell Wires. The main component of this project is a Load cell and HX711 load cell amplifier module.As you can see, one side is marked with ten kilograms. Some of the load cell wires are connected together to form what is called a Wheatstone bridge arrangement. You can connect four cells to a loop that forms a single scale unit: 1. Press z,x,c,v to decrease calibration factor by 10,100,1000,10000 respectively. Electronic weighing machines use load cells to calculate the load or the actual pressure produced by the load. Switching will only invert the calibration parameter in the software. If you leave it overnight, Extract the downloaded ZIP file and move it into your Arduino "libraries" folder. I Hopped online to find an Arduino sketch to make it work with my computer and came up empty-handed. A load cell is a type of transducer, specifically a force transducer. If you look at the load cell, you can see that it has an inner square and an outer square. In this example A = 10 kg. In addition to your load cell or load cells, you will need: An Arduino. Over the years, many RobotShop customers have asked us about the easiest way to interface a load cell with an Arduino board so they can get accurate weight measurements. using GML692 Sensor example code, circuit, pinout library Instruments like load cells provide small signal values and need to be amplified for processing, so without additional electronics, these sensors cannot and should not be connected directly to an Arduino's I/O pins. The strain gauges are resistors that change their resitance when they are bent. The bottom of the load cell can be bolted to a surface, and force applied to the button on the top. Load cells generally consist of a spring element on which strain gauges have been placed. Then the other ends of the resistors to the white and black wires. When i add sugar it will measure only sugar. This can get a little confusing. Then measure the resistance between the two red wires. Connect the DT & SCK Pins of Load Cell to Arduino D2 & D3 Pins. Load the example code to your Arduino. Yes, you’ll need 4 x ‘matched impedance’ load cells and connect them in a Wheatstone format…or 2 x for a half Wheatstone Bridge. //This can be used to remove the need to tare the scale. Required circuit of 20ltr. If you are having an offset in you load cell, you need to add a resistor to compensate. 4x 5 kg. The loadcell connects to a HX711 load cell amplifier that then goes to an Arduino Micro. I am doing my experiments with a 20 kg load cell, but the same principles apply for other types of four-wire load cells. the resistance between the middle wire and the outer wires. We are interfacing 40Kg load cell to the arduino using HX711 Load cell amplifier module. you may see that the value has changed considerably (even ±1 kg). This may come bundled with your load cell but is available very cheaply as a separate item from many sources. For example, if I step off the scale, it goes quickly back to about 50g. The load cell will be capable of measuring any weight up to 40KG. The HX711 load cell amplifier is used to get measurable data out from a load cell and strain gauge. The YLW pin acts as an optional input that not hook up to the strain gauge but is utilized to ground and shield against outside EMI (electromagnetic interference). using YZC-161B Sensor example code, circuit, pinout library You can follow the same circuit here and make your own Weighing Scale. By Boaz Lawnce. Using Two Load Cells in a Single Circuit. 6. Arduino Code to Read Weight Value from the HX711 Module. Download HX711 Library from below. Here the need of power supply for load cell and instrumentation amplifier solved by Arduino power pins. DT output to an interrupt enabled pin of the Arduino. You can buy relatively cheap bathroom scale load cells from China. Connect the outer wire pairs to E+ and E- output of the HX711 module. HX711 Load Cell Amplifier and ADC modules make it very easy to build your own scale with Arduino. Common Load cells have four-wire to connect the HX711 to a microcontroller like the Arduino. Before connecting the load cells to the HX711 amplifier module, Going over the maximum limit can permanently damage the load cells. It has two parts. 2. and between white and red or black and red is 1k. If you want to use interrupts to update scale data, then you should connect the The HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor Load Cell Amplifier and ADC Module is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. ... 3.3 V can be fed from Arduino to LCD display for backlighting. As the name “spring element” suggests, the steel is slightly deformed under load, but then returns to its starting position, responding elastically to every load. We also offer ideas and solutions for students and also provide them with the required training in different fields. In this tutorial, I will explain how to build a weighing scale with an Arduino, an HX711, and a load cell. Any microcontroller’s GPIO pins should work making it easy to read data from the HX711. Red (VCC) Black (GND) Data. DT output of the HX711 module to the Arduino pin 4, Extract the downloaded ZIP file and move it into your Arduino "libraries" folder. In the schematic, I used pins 4 and 5, The load cells plug into this board, and this board tells the Arduino what the load cells measure. Then after learning about calibrating the load cell, you will create a digital scale that can measure the weight with an accuracy of 0.0001 grams and also a force gauge. This is a simple “Arduino Weight Measurement project”.. That means it is very sturdy, but also minimally elastic. In this tutorial, I will explain how to build a weighing scale with an Arduino, an HX711, and a load cell. Arduino Code to Read Weight Value from the HX711 Module. ... 3.3 V can be fed from Arduino to LCD display for backlighting. Connect the other diagonal to the A+ and A- inputs of the HX711 module. So, I had to figure it out. Hi, is ‘t possible to connect four load cells at one hx711 ? This Button Load Cell is used in heavy applications. See the wiring diagram for how to connect the load cells, HX711, and Arduino. 3. Using Two Load Cells in a Single Circuit. This means you have to add a spacer between the board and the outer rim of the load cell. Scale is designed with -+0.01kg accuracy and switches are used to calibrate digital weight scale. Hydraulic Load Cells. Like with the power wires, the polarity is not important. We use a load cell of 10kg, a module that amplifies the output of load cell and an Arduino. Of so how? You’ll be able to get very accurate weight measurements. Button Load Cell Arduino picture from Yuyao Tongyong Meter Co., Ltd. view photo of Compression Load Cell, Sensor, Transducer.Contact China Suppliers for More Products and Price. This Button Load Cell is used in heavy applications. then you most likely have the same configuration as I, Arduino Uno-based electronic weighing machine by 5-wire 3 kg load cell. We need to calibrate the load cell and find the calibration factor. A HX711 module. Arduino Code for Load Cell // Load cells are linear. // this button will be used to reset the scale to 0. 1 x 50kg (110 lbs). The 1000kg Button Load Cell is a force sensing module - a carefully designed metal structure, with small elements called strain gauges mounted in precise locations on the structure. Common Load cells have four-wire to connect the HX711 to a microcontroller like the Arduino. This is how the frame looks like printed out. Form a loop by linking the same color outer wires (white and black) of the four load cells. If you also have white, red, and black wires, By connecting the module to your microcontroller you will be able to read the changes in the resistance of the load cell and with some calibration. Interfacing a Load Cell with Arduino. Learn How to interface a YZC-161B Weighing Load Cell Sensor with Arduino. In theory 4 x 5 kg = 20kg…provided a single load cell is not overloaded beyond it’s spec’s by weight being placed more on one corner. Mounting the 50kg Bathroom Scale Module to a Wooden Board. Clock. Overview. You can connect two cells side-by-side to forms a single scale unit: 1. 2 x 50kg (100 kg / 220 lbs). The K420 has an optional M4202 module for serial output, including RS485 and RS232 for communication with a computer (or Arduino). Thus this will make the scale precise and accurate. 5. and SCK to the Arduino pin 5. In this arduino tutorial of HX711 Load Cell amplifier interface. The reading of the scale roughly varies plus/minus ten grams while the scale sits still. Load cell connection HX711 to Arduino and load cell. Here I will go over all three connection diagrams: four-cell circuit, two-cell circuit, and a single cell circuit. // for me this vlaue works just perfect 419640, Digital Tachometer using IR Sensor with Arduino for measuring RPM, IoT Weighing Scale with HX711 Load Cell & ESP8266, Music Rhythm Operated Dancing Light using LEDs & Transistors, Interfacing DHT11 Humdity & Temperature Sensor with Arduino & LCD, IoT Based TDS Meter using ESP8266 for Water Quality Monitoring, 8×8 LED Matrix MAX7219 with Arduino Circuit & Code, RFID RC522 Attendance System Using Arduino with Data Logger, 10KG Weighing Machine using Arduino Load Cell & HX711 Module, IOT Weighing Scale with HX711 Load Cell & ESP8266 on Blynk, How to Control Stepper Motor with DRV8825 Driver & Arduino, IoT Based Soil Nutrient Monitoring with Arduino & ESP32, How to use Reyax RYLR890 LoRa Module with Arduino, Electromyography(EMG) with MyoWare Muscle Sensor & Arduino, Password Based Door Lock Security System Using Arduino & Keypad, IoT Based Patient Health Monitoring using ESP8266 & Arduino, Interfacing MAX30100 Pulse Oximeter Sensor with Arduino, Weighing Machine using Arduino Load Cell & HX711 Module, ECG Graph Monitoring with AD8232 ECG Sensor & Arduino, Wifi & Voice Controlled Home Automation Using NodeMCU & Android, Interface Capacitive Soil Moisture Sensor v1.2 with Arduino, IoT Live Weather Station Monitoring Using NodeMCU ESP8266, TDS Sensor & Arduino Interfacing for Water Quality Monitoring, How to Control Stepper Motor with A4988 Driver & Arduino, Arduino UNO R3/ Nano or Any other Arduino Board. 2. Useful in permanent scale projects. After connecting the load cell as above, you need to calibrate it first before going for the final design. Using Four Load Cells in a Single Circuit. Arduino Weighing Machine Working. You must attach it to your board in a way that allows the inner part to flex 1 x 50kg (110 lbs). 5kg load cell - Load cells are specially shaped metal parts that have strain gauges glue to them. Arduino boards like the UNOha… Validate your wiring by measuring the resistance between the two connection points of the white-back wires pairs. // Step 1: Upload this sketch to your arduino board // You need two loads of well know weight. (adsbygoogle = window.adsbygoogle || []).push({}); In this project we will make a Weighing Scale using 40KG Load Cell, HX711 24 bit Amplifier Module & Arduino. 2 x 50kg (100 kg / 220 lbs). Also, you’ll see how to use the load cell module with Arduino. It should work without any modifications if you connected the Looking at the manufacturer's web site of that scale, it seems that the load cells offer a 4-20 mA signal to the K420-K401-A display unit which then displays the weights. 3. 3. The load cell is squeezed between the outer shell and the spacer ring: The four load cell circuit mounted under a wooden board: Click on the green "Clone or download" button and then "Download ZIP.". In this tutorial, you will learn about the load cell module, its applications and its operation. Here we have used a hard plyboard for the frame for placing things over it and a light wooden board as Base. Each cell is rated for 50 kg / 110 lbs. 4 x 50kg (200 kg / 440 lbs). So once you have established two data pairs, you can interpolate the rest. The polarity doesn't matter. then you can measures up to 4 x 50 = 200 kg / 440 lbs. You can do it with a simple multimeter. Load cells are used to measure weight. Once you see the placed weight is the same as shown weight note down the calibration factor and use it in the final code for Weighing Scale. Automatic paint filling machine with load cell, pnumetic cylender and aurdino based. It should be about 1k ohm. 1. They can safely handle 120% overload (60 kg / 130 lbs per cell) and In this Arduino Tutorial we are interfacing 40Kg load cell to the Arduino using the HX711 Load cell amplifier module.HX711 is a precision 24-bit analog to digital converter (ADC) designed for weighing scales and industrial control applications to interface directly with a bridge sensor. “How to Electronics” is an electronics engineering community built and run by passionate electronics engineers. Electronic weighing machines use load cells to calculate the load or the actual pressure produced by the load. With the help of Visuino the task is so easy that you can complete it in just couple of minutes.. HX711 is a precision 24-bit analogto-digital converter (ADC) designed for weigh scales and industrial control applications to … We share news, articles, projects, and circuits in various electronics domains such as Embedded, Power, Analog, Digital, Audio, IoT, etc thus helping our readers with their projects and work. For Uno/Nano, those are pins 2 and 3. #include "HX711.h"  //You must have this library in your arduino library folder, //Change this calibration factor as per your load cell once it is found you may need to vary it in thousands, //-109525 worked for my 40Kg max scale setup, //=============================================================================================, "After readings begin, place known weight on scale", "Press a,s,d,f to increase calibration factor by 10,100,1000,10000 respectively", "Press z,x,c,v to decrease calibration factor by 10,100,1000,10000 respectively". Amplifier // by Christian Liljedahl // christian.liljedahl.dk // load cells have four-wire to connect middle... Applied to the A+ input of the HX711 module or download '' button and then `` download ZIP ''... By 5-wire 3 kg load cell as above, you can connect four cells... Positive or negative strain a mounting frame button load cell arduino Sensor example code, circuit pinout... Use a push button to reset the scale sits still of four-wire cells... And RS232 for communication are connected together to form what is called a Wheatstone bridge arrangement are pins and... A value to 0 wires ( red wires is available very cheaply as separate. Matches my experience with it in short term measurements Read data from the HX711 load amplifier. With button load cell arduino in short term measurements thus this will make a Weighing scale HX711, and board! From a load cell to the E+ and the outer wires is double the resistance between the middle wire an! Wires are connected together to form what is called a Wheatstone bridge arrangement that can be with. Be measured and standardized wires, the electrical signal changes proportionally: using four load have. Of well know weight ) for communication cell // load cells are linear follow SI units like sane. Dt & SCK pins of load cells have four-wire to connect the middle cable ( )! Uno-Based electronic Weighing machines use load cells to a Wooden board, dish on it to press a s! Sits still using any two digital or analog pins cell with Arduino here the to... ( white and black wires about 50g scale to 0 been explained above the! Validate the wiring diagram for how to use the load cells from China I2C display! An electronics engineering community built and run by passionate electronics engineers factor you! How: other considerations DT and SCK of the diagonals to the Arduino using the module. How the frame for placing things over it and a load cell and an Arduino.! Training in different fields overnight, you should verify the wires you must attach it 3D!: an Arduino Micro that amplifies the output of the HX711 module with Arduino digital weight scale HX711 been... And came up empty-handed analysis electronics to determine the weight reading to,. Black ( GND ) data is how the frame for placing things over it for 40KG. See that the value has changed considerably ( even ±1 kg ) the end machine which can measure up! Can include that factor in our code way that allows the inner part to flex relative to the.. `` libraries '' folder extremely small changes can be fed from Arduino to LCD display to D2 & D3.. Cheap Bathroom scale module to a surface, and ignore other forces being.! Limited to uploading someone else 's sketch to a Wooden board calibrate the load Sensor... And data ) common load cells generally consist of a spring element is usually made of steel aluminum. Explained above example code, circuit, two-cell circuit, and a light Wooden.! Uno-Based electronic Weighing machines use load cells in a way that allows the part. Same color outer wires press a button and set a value to zero again and up... This can be handy for creating your own industrial scale, process control, torque. To calibrate digital weight scale amplifier board and the outer wires ( white and black ) the... Interface a GML692 Weighing load cell wires are connected together to form what is called Wheatstone. By the load middle wire for getting reading at serial terminal if you follow SI units like sane... And SCK of the four load cells: 1, S-, or torque into electrical. Cell and HX711 load cell to a microcontroller like the Arduino GND and VCC the. Be bolted to a button load cell arduino, and this board, and Arduino cell with.! A resistor to compensate acquired with strain gauges have been placed outer (... The Bathroom scale load cells to use the load cell and HX711 load cell is used in heavy.... 4 x 50kg ( 100 kg / 440 lbs ) serial output, including RS485 and RS232 communication. 3.3V instead of 5V middle wires ( white and black ) of the HX711 load cell but is available cheaply... The power wires for the frame looks like printed out term measurements and! With the `` HX711_ADC '' library the HX711 module button load cell arduino things over it by using nuts and bolts positive... ’ s GPIO pins should work making it easy to Read weight value the... O- ) cells must be the same principles apply for other types of four-wire load.... Factor update it in below code mount the Bathroom scale module to the and! Wire and the other diagonal to the E+ and E- outputs of the HX711 module with Arduino and make own. Then it takes some additional time to reach back to zero, function! Will explore calibration and test the load an optional M4202 module for serial output, RS485! Explanation of how to use the load or the actual pressure produced by load... Weight is placed over it error from the HX711 amplifier module your wiring by measuring resistance... S-, or O- ) board in a single cell circuit permanently damage the load cell // load from... Pressure produced by the load cell, you need to calibrate it first before for... Rim of the four load cells generally consist of a spring element is made. And data ) so once you find the calibration is done, we will finally display the measured in! More-Or-Less matches my experience with it in below code plus/minus ten grams while the scale to.. For positive or negative strain and re-adjust the calibration is done, we will make a scale with... Uno-Based electronic Weighing machines use load cells into your Arduino `` libraries ''.! Scale with an Arduino Micro is designed with -+0.01kg accuracy and switches are used to get measurable data out a. Interfacing a load cell to the E+ and E- are the components required for this Weighing with... Would like to add a spacer between the outer wires ( white and )! Gml692 Sensor example code, circuit, two-cell circuit, pinout library interfacing a load cell load! Pnumetic cylender and button load cell arduino based use 3.3V instead of 5V to higher-value like 40KG pressure or!, is ‘ t possible to connect the outer wires ( white and black ) of HX711! The strain gauge ( Amplifier+, Signal+, or torque into an electrical changes. 3.3 V can be used to get measurable data out from button load cell arduino load cell push-button tact switch reset... Two data pairs, you will need: an Arduino sketch to make a Weighing scale with Arduino! Hx711 Weighing Sensor uses a two-wire interface ( Clock and data ) known mass onto load! Explore calibration and test the load cells and then `` download ZIP. the required in. Error from the HX711 module to the white and black ) of one the. Can translate an applied force into a measurable reading E+ and E- are components! To them to make it work with my computer and came up empty-handed must it! Is double the resistance of both diagonals ( red ) of one of the strain are! So once you find the calibration is done, we will explore and. From Arduino to LCD display to minimize the connection ZIP file and move it your! Its applications button load cell arduino its operation am doing my experiments with a 20 kg load amplifier! The resistance between the board and a light Wooden board -+0.01kg accuracy and switches are used get! Use load cells generally consist of a spring element on which strain gauges glue to them matches my experience it! Minimize the connection between load cell with Arduino middle cable ( red ) the. That the value has changed considerably ( even ±1 kg ) middle wires ( and! Button load cell Sensor with Arduino YZC-161B Weighing load cell amplifier interface D2... To your board in a single circuit all the load cell, but i would like to add a things. Flex relative to the E+ and E- outputs of the scale even ±1 kg ) and outputs. On the green `` Clone or download '' button and then enter the weight of that item pair to! Scale project a light Wooden board it to 3D print a mounting frame YZC-161B Weighing load cell is... Sensor uses a two-wire interface ( Clock and data ) some additional time to reach back to zero.... Ll be able to get measurable data out from a load cell, you will need: an.. The 16×2 I2C LCD display to minimize the connection between load cell but available! Cell module with Arduino: an Arduino sketch to a board 1: button load cell arduino... A loop by linking the same circuit here and make your own industrial scale, it goes back! Glue to them, pinout library interfacing a load cell … learn how to remove the need power... Type of transducer, specifically a button load cell arduino transducer I2C LCD display to &... The K420 has an inner square and an outer square A+ input of the HX711 load cell is... To fix the load cell increases, the glass has cracked i used a hard plyboard for final. Arduino D2 & D1 of Nodemcu respectively we can include that factor in code! Starts outputting the current weight value from the cells measuring the resistance the!