Thanks for the instructable - it has helped me get going quickly with my project using the HX711. HARDWARE OVERVIEW HX711 myRIO Load Cell 20kg Arduino Uno Virtual Bench Connection Diagram SOFTWARE Labview with FPGA module This software is used to program … Did you make this project? ArduinoIDE After that, we need to find an object with known weight. We did not use the correct calibration factor. In this example is used the HX711 that is very used in industrial applications. A hookup guide for the HX711 load cell amplifier breakout board . 1. Our goal is to offer the widest choice of products at a very reasonable costs compared with the products that are developed under the current market leaders. Normally, as seen in my schematic, the VCC pin on the hx711 should be connected to the 3v pin, but this stuck the output to the infamous value, -8388608. These four wires are Red, Black, White, and Green/Blue. On the opposite side you can see the connection for the Load cell. The load cell is a straight bar load cell (sometimes called a strain gauge). Grove – ADC for Load Cell (HX711) The HX711 is a precision 24-bit analog-to-digital converter (ADC) that is designed for weighing scales and industrial control applications to interface directly with a bridge sensor. I have used a push-button tact switch to reset the weight to zero. Thx. LoadCell 10 months ago Question Hi, and welcome to the forum. It is better if the known weight is closer with the maximum value of the working range of our load cell. The load cells the scale came with have three terminals and are connected in a bridge. On this example has been used a weight of 4 kg because maximum value of the working range of our load cell is 5 kg. load cell 20KG, 60Kg and 100KG have different value of calibration factor. ArduinoPLC Share it with us! Do someone know a code to put the hx711 to an graph bar with neopixels ? 1. 5 months ago when the serial monitor give u a value for reading, it means that u has succesfully interface your load cell. By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell, and with some calibration, you’ll be able to get very accurate weight measurements. The four wires of the Load cell or Strain Gauge are connected with the HX711. 1 year ago, thanks in advance for somebody regarding helping me.i am using 10kg straight bar type simple load cell..... help me in full detail how to calibrate that. Next easiest would be to make the uncompressed Arduino .ino file itself available for download (<2KB). Test. This chip is designed for high-precision electronic scale and design, has two analog input channels, programmable gain of 128 integrated amplifier. Once the HX711 library is installed, we can proceed to calibrate the weighing scales. 4 weeks ago, I was interfacing this module with raspberry pi. Luckily I found this free online RAR extractor web page/service: https://www.ezyzip.com/open-extract-rar-file-online.html...that did the job for me. Next is showed an example of how can look a final program for a load cell: Explain the benefits you offer. plz any body help me, do you have the code hx711 with mcu ?, cause i'm going to upload it to thingspeak, https://www.ezyzip.com/open-extract-rar-file-online.html, Output+ (O+), Signal+ (S+)+ or Amplifier+ (A+) is white, Output- (O-), Signal- (S-)+ or Amplifier- (A-) is green, Output+ (O+), Signal+ (S+)+ or Amplifier+ (A+) is white (should be green), Output- (O-), Signal- (S-)+ or Amplifier- (A-) is green (should be white). Calibration of the balance You have to calibrate only once for each load cell. Load cell is a transductor that generate an electrical signal directly proportional to the measured force. Serial.println(zero_factor);}void loop() { scale.set_scale(calibration_factor); //Adjust to this calibration factor Serial.print("Reading: "); units = scale.get_units(), 10; if (units < 0) { units = 0.00; } ounces = units * 0.035274; Serial.print(units); Serial.print(" grams"); Serial.print(" calibration_factor: "); Serial.print(calibration_factor); Serial.println(); if(Serial.available()) { char temp = Serial.read(); if(temp == '+' || temp == 'a') calibration_factor += 1; else if(temp == '-' || temp == 'z') calibration_factor -= 1; }}, Reply We chose the red and black wire pair to be the power wires of the load cell. You probably don't care about this anymore, but the load cell could be the wrong way around.I just had this issue and was messing around with the calibration factor for an hour before realizing it was the other way around. Most Load cell have four wires red, black, green and white. It contains an on-chip low noise programmable … After the main purpose is reached, we will compare the output between myRIO and arduino. Reply It is specially made for amplifying signals from cells and reporting them to another microcontroller. Favorited Favorite 3. Have you found an answer to this problem? This video shows how to interface HX711 Balance Module with Load Cell. In this post is showed how to use a load cell transductor using our equipments. Am I wrong that I should have continuity, Question Its power consumption is 1.5 milliamperes. The Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. However, has two analog input channels, programmable gain of 128 integrated.! The four wires red, black, white, and Green/Blue HX711 's minimum Basic. The Arduino, load cell the text so someone could copy and paste would be to the! 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