force sensor resistor

Projects General Guidance
1

Hi, I am planning to make a project that can detect the weight of an object in my hand using gloves.
what sensor should I put in the glove?

for example;
I want to record the weight of the dumbbell that I am holding

should I use Force sensitive resistor? and how can I convert the force into lbs or kg?

2

I recommend this:

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3

cwazymcgravy:
Hi, I am planning to make a project that can detect the weight of an object in my hand using gloves.
what sensor should I put in the glove?

for example;
I want to record the weight of the dumbbell that I am holding

should I use Force sensitive resistor? and how can I convert the force into lbs or kg?

Hi,
Welcome to the forum.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
The problem with a force resistor or any measuring device, the load, your dumbell, will have to be only connected to your glove/hand through the sensor.

So you cannot grip the dumbell with your fingers and hold it and expect the senor in your hand to accurately measure the mass.
In fact you will be measuring the pressure of your grip.
Tom.. :slight_smile:

4

TomGeorge:
Hi,
Welcome to the forum.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
The problem with a force resistor or any measuring device, the load, your dumbell, will have to be only connected to your glove/hand through the sensor.

So you cannot grip the dumbell with your fingers and hold it and expect the senor in your hand to accurately measure the mass.
In fact you will be measuring the pressure of your grip.
Tom.. :slight_smile:

TomGeorge:
Hi,
Welcome to the forum.
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
The problem with a force resistor or any measuring device, the load, your dumbell, will have to be only connected to your glove/hand through the sensor.

So you cannot grip the dumbell with your fingers and hold it and expect the senor in your hand to accurately measure the mass.
In fact you will be measuring the pressure of your grip.
Tom.. :slight_smile:

Hi sir, I was planning to put the sensor on my palms and holding it with a supine grip(palm up position) do you think its possible? sorry I'm new with this forum :)) thanks

5

The usefulness is only limited by how still the hand can be. Not very.

6

You basically need one or more force sensors.

For accurate reading the force of the dumbbell should be fully supported by those sensors, and nothing else. There also should be no other external force on that dumbbell, such as from fingers wrapped around it. Finally indeed it should he held still, as movements put off weight measurements (weight = force of gravity which is an acceleration, moving the scale changes this acceleration).

Long story short: it doesn't seem possible.

What you can do: put an RFID tag on each dumbbell, with its weight encoded in it (or just a serial number that can be linked to a table/database of sorts that has the weight stored in it), and an RFID reader in your glove or sleeve or wherever convenient.