Arduino weight scale programming. HX711 scale(A2, A3); is the highlighted line.

Arduino weight scale programming P -00000001. Kitchen scale with interface cable. In fact, it integrates a large number sensors and modules. But when I try to add a command to energize the relay, it throws of the code; the scale weights are off. But I need help to program the buzzer alert. Now I'm trying to make a program for getting data from the ESP32 over BLE based on two different sketches, one for the scale with HX711_ADC and other for RX/TX data from the phone over BLE. I am making a scale using HX711, 16x2 LCD screen, 5k load cell and Arduino Uno. P -00000003. home automation. 37" Another possibly related issue is that the LCD only shows the first letter of the "text-here" and "Grams" in the code below. The serial monitor shows the correct weight but the LCD is not correct. I want to add a line to my code the adds the 404. That library also has a tare() function that you can call in your sketch if you want to tare the scale at any other time. Call `set_scale()` with no parameter. P -00000002. get_units(5), 1); // print the average of 5 readings from the ADC minus tare weight (not set) divided // by the SCALE parameter (not set yet) scale. f)" I am new to Arduino and programming, I have I have setup a scale using a strain gauge and a Arduino Uno. In the following discussions I have explained how to construct a digital weight scale machine using Arduino which can measure weights from few grams to 40 Kg It can measure weight in the normal mode: Count coins that are placed on top, one by one: There's also a mode where you can place a coin and the program will calculate its weight. It is equipped with a 24-bit A/D converter chip HX711, specially designed for the high An Arduino can be used to control and read data from a weighing scale by interfacing with the scale’s load cell sensors and utilizing the Arduino‘s analog-to-digital converter (ADC) to convert the sensor’s output into a weight measurement. I currently have a code which works fine reading weights in grams, but i am trying to implement a push button to display the readings in ounces. The issue I'm having is that when I place the 15g weight on the code is picking up the 10g number as it This library is specifically designed to communicate with the Weighing-Scale-XK3190-A9 scale through the RS232 protocol. available() returns a value greater than That is then wired into an HX711 breakout board for the HX711 IC that allows you to easily read load cells to measure weight. The Wheatstone bridge formation of a load cell. The problem is if the ESP hi, I'm making a scale with two and then four load cells (50kg each), two hx711 and arduino uno. h" HX711 scale; void setup() { I am able to get the following weight from an avery scale and put it into a char array. . 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. Much appreciate your help. void setScale(float scale = 1992. Moreover, while the buzzer is still working I am gonna press the button for 5 seconds, this way the buzzer iflow1: So here is a quick recap of the logic: Servo starts at 0 degrees; If the reading is equal to 2KG - turn the servo to 180 degrees; If the reading over 2KG - servo remains at 0 degrees In this tutorial, I introduce an Arduino-based weighing scale that uses a load cell, analog-to-digital converter, and calibrated mass. Any help much Hello Gettiing different value of a weight when capture the value in a variable the print it vs directly printed using using lcd. The problem that i am having is that i am trying to make an interrupt with a "tare" I'm making a scale that works, but I want to put a reset button, When I press it, the console says it's restarted, but it doesn't actually: /* ----- HX711_ADC Arduino library for HX711 24-Bit Analog-to-Digital Converter for Weight Scales Olav Kallhovd sept2017 ----- */ /* This example file shows how to calibrate the load cell and optionally store the calibration value in EEPROM, and can i say that if the loadcell gets weight greater than 250 grams the high voltage at pin 13 by this code?? as in this the first line i have just written it 250 so how the program know that this is 250 grams SKU: 357590 Mfr Part #: KS0345 UPC: 618996746385 Electronic Scale Kit 5KG Digital Load Cell Weight Sensor HX711 for Arduino DIY Programming Electronic Kit STEM This is a low-cost, easy-to-build and open source programming kit. Take a look at our Arduino-based digital weighing scale in action. For this project, we opted not to utilize any libraries when connecting the HX711 load sensor to Arduino. Hi, Building a project where I use HX711 with a load sensor to monitor the weight of a bottle. Project: Making a digital loadcell weight scale with buzzer ( to alert when passing 50g). For example the serial monitor shows "68048. My goal is to have a precision scale connected to Arduino via RS232 port/adapter, and I need to be able to read the value the Hi, I am new to Arduino and coding in general. h> #include <hiduniversal. 4: 520 The above article explained an Arduino based weighing scale system using your PC, in the following section I have explained how to build a practical version of Weight scale machine by adding 16 x 2 LCD display, so Platform scale with 200kg capacity ; LCD 16X2 Indicator for weight display ; Wheatstone bridge constructed from four Nos of half bridge load cells of 50kg rating each. 2. Once the hardware connections are complete, the next step to build the digital scale is to upload the program code to the MCU from a PC through the Arduino IDE. i've connected everithing like the picture attached. 4. certain number. I am still using the same steel plate mounted on a 5Kg load cell, or strain gauge. 5 kg, I want the readout to say 15 tonnes. Using both programs separately work fine so I tried to implement both into I was able to find this beautifully laid out in the article *Digital Force Gauge & Weight Scale with Loadcell & Arduino * and under "Measuring the Weight of Objects" I was able to find the breadboard view of the wiring and the code. But it has become way more difficult that I had expected. h? Serial. i dont have the problem with data from barcode reader, weigh scale and ds3231. What I need help with is re-setting the relay. h> #include Hello, i want to print the data from barcode reader, weigh scale and ds3231(for date) to SATO printer CG408TT. Counting Scale Made With an Arduino: This project is still somewhat of a work in progress however it's reached a point where it's useful to share the details for others to benefit from it and the idea. So please forgive me if I don’t give enough information to describe my problem. I'm working on a project that involves an LED lighting up with a load cell reaches. My Overview. 0 g now when I power up or reset. You can absorb the basic knowledge Use HX711 Load cell to build a digital weight scale and measure. logzero May 6, 2023, 1 (scale. Toggle Nav. Just use I have been trying to fathom this out for a week with no success. The things that I have are: -load cell (10kg) -HX711 -buzzer -led -LCD screen -button -Arduino mega You see what I want is when I put a weight bigger than 100gr I want my led and my buzzer to work. Is the problem within the library of Load Amplifier itself? (Pardon my grammar :slight_smile: ) #include "HX711. Download Libraries: IoT Weighing Scale Arduino Programming: I am using Arduino Mega 2560, Weight Indicator RS232 data is forwarded to arduino using TTL module and the result is in this form US,GS,+00743. I changed pins to analogs and it seems to Hi all I am trying to design a machine to measure weigh change over time I use a UNO with an HX711 and a load cell. I am working on a sketch for a load cell scale that uses four 50kg load cells and an HX711 amplifier. Used GSM/GPRS SHIELD (Sim900) - Programming Questions - Arduino Forum For the base and the library from githun : GitHub The problem is to tell arduino "hey send me the weight now I do not . HX711 ADC for amplification of bridge output ; Options for offset Serial. However I would like to use it as a weigh checker. Check the datasheets to see if the ESP32 high on SCK is high enough for the HX711 (check the tolerance on the ESP high output); if it is, should work. 5, or 1. There are 2 buttons installed, 1 to tare (pin9), the other to change units (pin6) All functionality I thought I could get some parts from amazon and copy some directions and create a keg scale. 0_x86__mdqgnx93n4wtt\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files\WindowsApps\ArduinoLLC Copy and paste the below program code in Arduino IDE and change the calibration factor to the value which you got while calibrating and upload the code. I have the scale completed and I’m now trying to get the code to perform all the necessary functions. Arduino Uno; 1 x breadboard; 1 x Green LED; 4 x Blue LEDs; Hi guys so i have a project i am busy with and wanted to try arduino. Hence, the output voltage from the load cell changes allowing us to measure the load value. See more Test the LEDs. Arduino and ESP32 are completely different controller boards. Project Guidance. Kitchen weighing scale electronics. Divide the result IoT Weighing Scale: IoT Weighing Scale using Load cell HX711,ESP32, & New Blynk V2. I've got the hardware and code working to the point of accurately reading out weights. I wired the scale using a breadboard to verify it works. Product Categories Interface HX711 Load Cell Module w/ Arduino to Build a Digital Weight Scale. The following images illustrate the accuracy of the weighing scale that we constructed. Features: Supports RS232 communication with Arduino Simplifies data parsing from the Weighing-Scale-XK3190 GitHub - bogde/HX711: An Arduino library to interface the Avia Semiconductor HX711 24-Bit Analog-to-Digital Converter (ADC) for Weight Scales. h> #include <Wire. f); // this value is obtained by calibrating the scale with known weights; see the README for details scale. h> #include <LiquidCrystal. For this step all we are going to do is connect the LEDs to the In this tutorial, I will introduce an Arduino-compatible load cell that exemplifies all of the aforementioned advantages. It doesn’t matter if you have a 5Kg or 10Kg or any other load Arduino Weighing Scale Code: The programming aspect of this project may be challenging for those new to coding. h> LiquidCrystal_I2C lcd(0x27,16,2); // Se declaran los pines a utilizar #define DT A0 #define Also missing is the line that #includes the library and some variable declarations,. Despite the existence of libraries for Hi there, so first off all, still new to Arduino second, I have a load cell which works with the following code: * ----- HX711_ADC Arduino library for HX711 24-Bit Analog-to-Digital Converter for Weight Scales Olav Kallhovd sept2017 ----- */ /* Settling time (number of samples) and data filtering can be adjusted in the config. Yeah When I Print it normally, I get the following: +00000000. 1: Hardware Block Diagram for the Digital Weighing Machine (DWM) 1. Programming. I used a push button with a 10k pulldown resistor to tare out the scale. 3v, so you don't fry your ESP32. But that to side , all is working ok , i hucked up a This is my first post and I am an absolute beginner at all this. 2: 1351: May 5, 2021 Weight Reading Code for 2 Scales I have a weighing scale that sends data using RS232, That's nice. Hello Watch a video of a digital scale with Arduino that includes calibration, but does not include the button. Whenever we apply the load, the resistance of the strain gauge in the load cell will change. Weighing scale sends weight data whenever ADC output on zero weight =2230 ADC o/p at 2000gram(calibrate)=2590, how to calibrate on 2000 and how to get measured weight??? Google "arduino map floats" for lots of information. What I propose is something like: if relay switch has been thrown, check for state of a re-set switch and cease Hello, I need an ARDUINO programme part made for the buzzer alert. tare(); // reset the scale to 0 Hi, I have used an old set of digital hanging scales and connected the strain gauge to an arduino uno via a HX711 ADC. 0-In today’s article, you will learn how to make an IoT based digital weighing scale using ESP32 WiFi + Bluetooth module, HX711 amplifier board, a load cell, and the new Blynk V2. //Program code for digital weighing scale using Arduino and HX711 with load cell #include <LiquidCrystal_I2C. I posted a question a few days ago asking for help with the sketch because I am an absolute beginner and couldn’t get the sketch to work for me. h> #include "HX711. I've been assigned to display weight from weighing scale (CAS CI-201A) into a textbox using C#. The process and the code have two subdivisions: the Hi, i'm trying to calibrate my load cell to get the right weight. When I add weight the increase is correct, ie when I add 3kg the increase is 3kg and so on, See the screen shot. I em making a gsm scale , basicly a scale which will send me a gsm message onece in a day with the current weight on the weight sensor . But my code seems to stop when it gets to scale. Indicator display value and receive data is here. Be sure to configure the same baudrate, stopbits and parity on both the weight scale and your terminal program. Call `tare()` with no parameter. Regards John #include <HX711. For example, let's say the nothing on the scale voltage is 0. If I re-set the program, the tare reading changes and the weight of the samples will be different. 12: 1777: November 11, 2021 Need help with a simple weight sensor project. My plan is to use a 2 channel relay to activate 2-12 volt dc solenoids (not powered by the Arduino). The HX711 load cell amplifier is used to get measurable data out from a load So I'm using a Arduino Nano 33 BLE Sense and Load Cell 1kg but whenever weight is applied the readings stop coming up in IDE any solutions? Arduino Forum Arduino Nano 33 BLE Load Cell stops measuring once weight is applied. 37 " and the LCD reads "1. You can also use an Arduino Pro Micro, I have a problem in how the author of the programming code with LCD I have a problem in how the author of the programming code with LCD I put in the programming book plate numbers 4 * 3 keys shown on the LCD This code shows how to measure the Abe with BMI units? #include <Keypad. Standard LCD - 16x2 White on Blue. I am a beginner to the coding world. 8. Basically, my project is that I need to make a weight sensor that activates a motor once a certain weight (lets say 400grams) and above has Hey, I have a couple of interrelated doubts. HX This may be a dumb question, but I basically know nothing about coding arduino. Arduino Nano R3. One to kick off the small bag forward if it weighs 27g to 29g. 3. Ideally the scale would have a liquid crystal display showing current weight of box, as well as a piezo buzzer that would buzz constantly once a certain weight is achieved, until the box is replaced with a new empty box. I want to do a tareweight procedure every time the Arduino scale is powered up. 0 //This value is obtained using the SparkFun_HX711_Calibration sketch #define DOUT 3 #define CLK 2 HX711 scale; A: Hardware Block Diagram Figure-12. simonboyle08 January 1, 2019, 7:32pm 1. i want to build a simple scale that when it reached say 1kg it should send me a sms. I am going to build the project up in 5 Steps, Supplies. I have managed to calibrate the scale and can log weight readings to an SD card. That weighing scale has rs232 port for communication. So the actual voltage increase from the weight is 1. done 0 0 118 118 118 0. 00kg? (capital S) class on an Arduino as it can cause memory corruption in the small memory on an Arduino. It has built-in Wi-Fi module, so you can use it in a variaty of projects. h> So, I have a weighing scale that displays data to a 6 digit 7 segment display. i have an ardafruit led display, and a smoothing function that seems to work quite well with the noise i am getting in the signal from the sensor. P Now how do I edit this data so I get only whatever I want, i. In this Arduino Tutorial we are interfacing 40Kg load cell to the Arduino using the HX711 Load cell amplifier module. I need to interface weighing scale with Arduino UNO to see the weighing scale data in serial monitor of arduino ide. HX711 scale(A2, A3); is the highlighted line. As far as the PC side, an arduino looks just like any other serial com port attached device, so any PC programming language or I built a scale using a load cell with help from a website. Setup: Wemos D1 R1 load cell with amplifier HX711 Test code (example as provided in HX711. I send measures to MEGUNOLINK I feel happy with the display of the weight on real time. When the program runs the weight is reported to the LCD and Serial Monitor. scale. I have made the load cell scale and now the weight values are displaying. h> // I am trying to create a scale for a box that is being filled by a conveyor, using a HX711 and a 20kg load cell. 00kg" how to make the relay turn on when the scale is ww0001. I am seeing a weight of 0. is_ready()) {float weight = scale. 5 minus 0. This can be done by connecting the load cell sensors to an amplifier circuit, which amplifies the Hello guys, Ive got an animal weigh scale that outputs in RS232 format so i have an RS232 to TTL converter attached to my mega2560. If you receive data (the terminal program should at least display Good day. #include "HX711. Components I purchased a scale with HX711 module with 4 load cells: m5stack-store Scale Kit with Weight Unit. The output of the LC is amplified by The measurements made by our digital weighing scale are compared with measurements made by a commercial kitchen weighing scale. We could be about 12000 percent more helpful if you supplied make and model of this device, and links to ant documentation that exists for it. how would I do that? Maybe. This project is a digital weight scale that utilizes an Arduino Nano microcontroller, an HX711 bridge sensor interface, and a load cell to measure weight. i've followed readme file of the library HX711 wich says ## How to calibrate your load cell 1. Then a 10 LB weight is added and the voltage goes up to 1. I used a simple switch to apply power Hello, I am fairly new to Arduino and have some questions about a task I am trying to accomplish. Human Scale Load Cell Weight Weighting Sensor 50KG Half-bridge with Amplifier HX711 AD Module Strain Gauge Bathroom Scale for Arduino. with that i took a bathroom scale apart and wired it up Below is a working code that throws a switch when an arduino connected scale reaches a certain reading (weight). and this is the code #include <hid. kitchen. So ive got 14 output pins of 6 digit 7 segment display which i attached to the arduino like this - // Define segment pins (A-G and DP) #define SEG_A 2 #define SEG_B 3 #define SEG_C 4 There is no additional electronics needed, just two wires between the internal scale electronics and the Arduino. Only you can add it to this program because you don't use the normal sentences from the HX711 book. get_units(10), 1; Arduino connected to hx711 amplifier and then the load sensor measures the weight, this the keyword from the library to get the load presented as weight in average of 10 measurements and show it with one demical place. Power the HX711 with 5v. 5 and store as it will compare with other floating no. tare(); scale. Basically I want the light to blink when a weight between 9g-11g is placed on the scale and stay solid when weight of 14g-16g is placed on the scale. All the libraries used in this project can be downloaded by clicking on the link given below. get_units(5),2); the printed value is 4. get_units(5),2) Proper value is get using the lcd. ArduinoIDE_1. and i just test to print the data from barcode reader and the SATO printer cant print anything. 2 kg This is OK If I store the value in a variable the print it, long weight weight = (scale. h): #include "HX711. johnwasser April 6, 2021, need help!! with Digital Weighing Scale w/o Amplifier. 6 for instance. 5 kg! 22 respects. Hope I don't mess up on the post rules or sound too dumb. h file For calibration and storing the IoT Weighing Scale Programming: In this project two programs are used, one program is written for the Arduino, while the other program is written for the Nodemcu ESP8266 Wifi Module. println(F)? Or a basic programming trick? I need to store the tareweight and use it later to calculate the actual weight (total weight minus t HX711 Load Cell Arduino: HX711 Load Cell Arduino- In today’s article, you will learn how to make yourself the most accurate Digital Weighing Scale using the HX711 Amplifier breakout board, a Load cell or Strain Gauge, Arduino Nano or Arduino Uno, and an i2c supported SSD1306 Oled display module. 1. Components and supplies. i am totally new to the arduino world and i kinda have no idea what im doing. See all results. I have not made any changes to the hardware. the user would use push buttons to set the desired weight, arduino will set the scales to tare, open solenoid actuated valve, water flows when the weight reaches the desired level I have a load cell hooked to the arduino and I'd like to modify the code to close a switch when the load reading on the scale hits a set level. I will also introduce calibration with known masses to create a powerful and accurate weighing system that If you wish to build your own weighing scales or incorporate a weighing function in a wider project, you can use this Instructable as a basis, whatever your requirements, from weighing fractions of a gram up to many kilograms. set_scale(xyz); and then scale. I'm new here. Written by Hanie Kiani avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp I'm programming my Arduino to make a weight scale using the code below. This can happen after the program has been running perfectly for some time. The load cell’s 4 wires are connected to the HX711 amplifier board, and another set of 4 wires connects the HX711 to the Arduino Nano. food and drinks. 0. print(scale. print(weight,2) The printed This is my setup from the previous DIY Weighing Scale project. 5. I have watched several videos on Hey guys, I am trying to do a different kinda a digital scale. 5kg I want to separate the weight which is 00743. Hello, I am new to arduino If the truck goes on scales weighing 1. Scales Kit is a programmble IoT weighing kit. When there is no weight on the scale it reads -404. It simplifies the process of parsing data received from the scale, allowing you to quickly obtain accurate weight readings. Currently, I'm using an RS232 to TTL converter, an Arduino Uno, and I've managed to read the weight information from the device on the Arduino's serial monitor. I hope I can help you with this! #include <LiquidCrystal_I2C. Use a voltage divider or other means to reduce the DT 5v high down to 3. e. 6kg to the load cell reading. 6kg. I want to show this weight on a 7-segment display. smart appliances. println(scale. Internally the program uses the raw values when displaying, it uses the conversion value to show the weight in grams, the correction value Hello to everyone, today I am here to show you a very insteresting project that I was working on for a while, it consists on a digital scale using the ESP-12S microcontroller plus a load cell and it HX711 wheatstone bridge to i2c converter, it is capable to measure weight precisely in the spectrum of grams, the sensor I am using is limited to 5Kg but you can use Greetings Everyone! Can anyone help me find the solution to my problem. I have attached the image of the serial output from the scale Hi all! I'm pretty new around programming even though I did some small projects with Arduino. When my weighing scale sends me data via RS232 (through MAX232), what format is that data in? Board: "Arduino Uno" C:\Program Files\WindowsApps\ArduinoLLC. But forr Hello friends. You can then place as many coins as you want, either In this project we are going to take a look at the load cell and building a portable Arduino-based load scale with the HX711 Weight Sensor, This marks the end of the programming part. If you then place the bottle on the scale everything works fine. EEPROM. i have the arduino uno, a hx711, a dc to dc buck converter and a sim800l module. If the bottle get almost empty it will trigger a message. A demo of the weighing scale program is also shown below: Process for Using the The Arduino based weigh scale combines digital outputs, analogue input, using the serial monitor, programming etc. Below I'll post the code I got from Inspired by a youtube video on making an IoT bathroom weighing scale I was planning to weigh my beehives to be able to monitor their health. but i want to push the data through a pushingbox api which is sent as a string. 5 volts. A digital scale consists of a load-cell, an analog-to-digital converter (ADC), a processor I have a indicator that sends weight information through an RS232 output continuously. h" // HX711 circuit wiring const int LOADCELL_DOUT_PIN = 5; const int LOADCELL_SCK_PIN = 6; Setup your scale and start the sketch WITHOUT a weight on the scale Once readings are displayed place the weight on the scale Press +/- or a/z to adjust the calibration_factor until the output readings match the known weight Arduino pin 6 -> HX711 CLK Arduino pin 5 -> HX711 DOUT Arduino pin 5V -> HX711 VCC Arduino pin GND -> HX711 GND cattledog: Can you be more specific about what in the program is failing. We have recently adhered to the specifications of HX711 and accompanying documentation. Projects. P -00000004. The Can I use an Arduino to capture the weight from the scale and push it Windows via USB for a VB app to capture? Pretty much just need the data coming on a port that I can listen to and VB can take it from there. I don't know which method to try. print(volts,0); is working fine. please guide me in It's really easy to use and program using Arduino IDE. The weight will be sent via serial port RS-232 or USB converter. h> + // initialize the library with the numbers of Build a digital weighing scale using load cells and Arduino with this in-depth DIY electronics project guide from Tacuna Systems. h> #include <usbhub. You can measure your own weight on another scale you trust, them measure your weight again on the IoT scale and adjust Good day. h" #define DEBUG_HX711 // calibration parameter from calibrating Hello. Etc. HX711 is a precision 24-bit analog to digital converter (ADC) designed for weighing scales and industrial Designing a Digital Weighing Scale Machine using Arduino. is that it is not so common to se in arduino projects and there is not much on the internet about using it with a weight sensor and a arduino. Weight Acquisition and Display on Serial Monitor The LC (Load Cell) has a capacity of 0 – 30 kg, and it produces a voltage of 0 – 10 mV corresponding to 0 kg – 30 kg load when biased by 5V supply at its EX+/EX- terminals. This Arduino based electronic This is a very precise scale for any weight up to 1. Simon. 0 volts. h?avr/eeprom. Not quite getting the programming down. get_units(5); lcd. The weight readings are displayed on a 16x2 I2C LCD screen. The scale is hanging from the roof of a poultry shed with a platform connected with the goal of weighing the chickens as they jump on and off the platform. h" #define calibration_factor -7050. 49. It has a connector for a 3. tare(); </> */ #include <Wire. tare set the scale to 0. I use code from github and modify it to count mean from two measurements. I keep getting the error: no matching function for call to 'HX711::HX711(const uint8_t&, const uint8_t&)' I have got this code from thingiverse, and I have added the bogde/HX711 library from github. the data from the weigh scale device always comes in 4 lines so i set up a bit of code in my arduino with some help from the forums here to read and identify each line. What are you trying to do here? weight = scale. I read the serial from the weighing scale and it says "ww0000. set_scale(2280. Luckily, I was helped by Programming Questions. 50 104. the scale will be "zeroed out" (the correct term is "tared") when the program starts. You could Serial. Tare . Ive decided to intercept data going into the 7 segment display by tapping the wires. The last digit Explore comprehensive documentation for the Arduino Nano Based Weight Scale with HX711 and I2C LCD Display project, including components, wiring, and code. the container sits on weighing scales with rs232 bi-directional serial port, definition available. Arduino scale output to the screen. My issue is the following; When the ESP starts, it reads the scale. 25 Results. If the bag weighs less than 27g to say 20g a hey guys, im still dabbling away at this scale project, the project will read a pressure sensor in a hydraulic cylinder to determine force. get_units(10); // Get the Arduino Bathroom Scale With 50 Kg Load Cells and HX711 Amplifier: This Instructable describes how to make a weighing scale using readily available off the shelf parts. Place a known weight on the scale and call `get_units(10)`. Materials needed: Arduino - (this design uses a standard Arduino Uno, other Arduino versions or clones should work also) HX711 on breakout b Then subtract that "Zero" voltage from future readings to get the actual voltage for any weight placed on the scale. It is consist of four pieces of half-bridge resistive strain gauges, with a total weighing range of 200kgs. Bear in mind that serial comms is very slow compared to the rate at which the Arduino works so it is quite possible that when Serial. 7V battery, which was really usefull for assembling this project. I want to build a scale using four 50kg load cells with an HX711 amplifier going I have developed an apparatus designed to fill cylinders to a specific and user variable level. gvod nzko liqcf vnw robsbg xnnowu wwrjq qjmcwt xusa kfscfoxjp