Hi, I’m trying to measure the resistance on a 100 kg Load cell. The input voltage is 10-15 V and the output voltage is 6-20 V. Is it possible to measure the resistance on an Arduino using a HX711 load cell amplifier? Do I need an external voltage supply?
Does this load cell amplifier work if you use a load cell that can measure up to 500lbs? I am looking into designing a load cell and wasn’t sure if it will need the amplifier to change too.
@Monosakkarid You can supply 10V-15V to your Load Cell through VCC and GND of the HX711 using an external voltage supply. The HX711 uses a two-wire interface (Clock and Data) for communication, therefore any microcontroller’s GPIO pins should work.
sir which sensor use for the monitoring of petrol to indicate the value of petrol on lcd and interfacing with arduino?
@imran Unfortunately, your question is not related to the content of this article. Please contact us via our Support Center or post your question on the forum and we will be happy to reply there.
Brahim will the Arduino help me close a small tap gradually with a stepper motor when the cup on the load cell gets fuller and close to my target weight?
@Johan you can use the RB-Onl-38 and an Arduino UNO board interfaced with an appropriate load cell. You will also need a stepper motor and an appropriate stepper controller for it.
I would like to directly connect commercial strain gages to the RB-Onl39 board. As you know, usually strain gages have two or three wires. Which Molex pins are connected to strain gage wires.
If possible, could you let me know which strain gauges you use in the 50kg mirco load cell?
@Chunhee We are not the manufacturer of the 50 Kg Micro Load Cell, therefore we don’t have the information on the strain gauges being used on this load cell. The RB-Onl-38 can be used with most of the types of load cells but hasn’t been tested with strain gauges and three wires load cells.
sir , i do need to take weight of body so i fond that load cell can do it. i had got the load cell with the 5 pins • Red : Excitation (+ive)
• Black : Excitation (-ive)
• Green : Output (+ive)
• White : Output (-ive)
• Shield : Ground
and i want to use hx711 amplifer to connect my load cell to ardunio mega. i am confused how to connect the load cell to hx711 amplifier and can you provide any code for that.
@poornima This blog post is related to the RB-Onl-38. Here is a tutorial on how to interface a HX711 with a Load Cell.
I would like to read microstrain. Is this possible with this board? If so what is the calibration process?
@Charles RB-Onl-38 is intended to work only with load cells. We didn’t test it with a “microstrain” therefore, we are not sure if it will work properly.
what type of load cells are to be used to measure the force in suspension system of a car ?
@Vishal We suggest you to look online for “Bump stop load cell” and “Suspension top mount load cell”
Hello, I am trying to get this setup using the sample code but keep getting the following error.
C:\Users\design\Desktop\Wheatstone-Bridge-Amplifier-Shield-master\Examples\strain_gauge_shield_and_lcd_arduino_uno_code\strain_gauge_shield_and_lcd_arduino_uno_code.ino:20:30: fatal error: WheatstoneBridge.h: No such file or directory
#include
^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.
Do you know how i might fix this
@Tom This seems that the WheatstoneBridge Arduino Library is not properly installed. We suggest you to delete the Wheatstone Arduino Library folder from your Arduino Libraries directory and reinstall the library following the instructions provided in this tutorial
I want to put a load cell like this one: https://www.robotshop.com/en/button-load-cell-200-kg.html under the front edge of a beehive (outdoors) and leave it there. Then I will periodically carry an arduino (with the load cell shield attached) out to measure the current weight of the hive. Will it hurt accuracy to use a 4 pin quick connect between the load cell and the shield? Like, could I use a USB m/f cable cut in half, with half soldered to the load cell wires and the other half connected to the shield, and then plug them together to use it? Thanks.
@Charley As long as the load cell’s wires have a proper contact with the strain input on the shield, this shouldn’t decrease the accuracy of the load measurements. Just be sure that the wires are properly soldered.