Questions tagged [strain-gage]
A strain gauge measures the physical strain on an object. The most common types are a metallic foil attached to a flexible backing where the resistances changes when subjected to compression or tension.
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Measuring weight on a gym machine [closed]
We're doing a school project where we have to measure weight on a fitness machine.
The user can select how many weight plates to use by moving a rod like shown in the picture.
How would you do it?
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Should we use wheatstone bridges nowadays?
For measuring strain gauges, the Wheatstone bridge is the historical choice.
In a quarter Wheatstone brigde (\$350 \Omega \$ typically (?)), with a high input impedance amplifier, and some bridge ...
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A question about choosing, implementing and placing a strain-gauge amplifier
This will be a little long question. Since I was and still am alien to some concepts, I will go step by step. Basically it is about implementing a strain-gauge amplifier and wiring configurations for ...
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How to Read Wheatstone Bridge negative voltage with Arduino?
I have a half bridge setup with strain gages and a INA126 to amplify the voltage. I can read the voltage fine when the lever is bent one way, but when beding the lever in the opposite direction I don'...
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Strategy to balance a Wheatstone bridge for strain measurement
The purpose of my project is to build a sufficiently accurate "Strain indicator" based on the use of a Wheatstone bridge using an Arduino. Currently I am using a HX711 as load cell amplifier which is ...
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How does full wheatstone bridge with strain gauges work?
I have gone through a number of tutorials on Wheatstone bridge and how to use it to sense load using strain gauges. I have also gone through the calculations where one of the resistors of the ...
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Instrumentation amp giving only positive output (with + and - power supplies)
I'm using an instrumentation amp for a bridge circuit for strain gauges. However, the output range is always positive (the lowest value I can get is zero).
The amp I use is AD620. For power supply I ...
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Connecting the Shield of a strain gage cable connector to PCB with ADC
I have a half-bridge strain gage sensor (pre-assembled product) with a 30cm cable, which I am trying to interface with my PCB containing a 24-bit ADC.
The connector at the cable end toward the ADC (i....
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How do I calculate the minimum deflection I can sense with a strain gauge, like the BF350-3AA?
I have a strain gauge (the BF350-3AA), and I will be connecting it to an HX711-based amplifier sensor.
From its low-quality datasheet, I've pulled out the following figures:
Nominal Resistance: 350 ...
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Sensing weight with strain gauge, InAmp, ADC & Pi
I have an SEN-10245 sensor for weighing objects (essentially a strain gauge). The goal is to capture data with a Raspberry Pi, so the signal from the weight sensor needs to be amplified and then ran ...
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How does temperature compensation work for strain gauge in wheatstone bridge
Wheatstone bridge is used for temperature compensation for strain gauges
If 2 strain gauges are connected like this figure. Due to temperature variation; the resistance Rg will change in the same way....
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AD620 input voltage range identification
I wish to buy this AD620 amplifier module for amplifying my strain gauge voltage. I also wish to use it with my thermocouple. Basically, I want to accurately read DC voltage values from around 0.1 mV ...
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