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Questions tagged [fsr]

Force-sensing resistors are devices whose resistance changes with pressure / stress.

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Force Sensitive Resistor SPICE Simulation does not show voltage change

I have done a SPICE simulation on LTSpice to double check before I order my custom PCB. I want to graph the voltage change after the op-amp to see how it is affected once I press on the force ...
Prolik_'s user avatar
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0 votes
1 answer
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Force Sensitive Resistor Calibration

I have been trying to calibrate FSR06CE Force Sensitive Resistor. Data sheet here. For starters I started by placing deadweights on the top of the FSR's active area and using a multimeter and DSO I ...
Ethan25's user avatar
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1 vote
1 answer
368 views

Need Help Calibrating Force Sensing Resistor (FSR)

I'm currently working on a project that involves using a Force Sensing Resistor (FSR). However, I've run into a bit of a roadblock when it comes to calibrating the FSR. I don't have access to a weight ...
Ethan25's user avatar
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5 votes
2 answers
640 views

Choosing between an op-amp and a comparator

I am a YouTube educated, complete newbie with three questions regarding my design (see the schematic). Because I'm self-taught, some of my terminology may be non standard. This is a circuit powered by ...
Sam K's user avatar
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0 votes
1 answer
125 views

Calculation of an error of a non-linear FSR produced by the connection of the voltmeter

Background: I'm studying my master at Computer Science and took a course that requires some understanding in electrical engineering. Unfortunately I have a very basic understanding of electrical ...
Evgeny's user avatar
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1 answer
713 views

How do I find the accuracy / uncertainty of my force sensor system?

I have built a force sensor using an arduino and a self built force sensitive resistor (FSR.) The sensor system consists of a simple voltage divider, where the voltage across the FSR is measured by an ...
BetweenBeltSizes95's user avatar
1 vote
1 answer
309 views

How to determine the value for the gate resistor (Rg) of a MOSFET in low side configuration?

Once the FSR is pressed the output of the comparator should go high. This, will drive the MOSFET ON which has a DC motor on its drain terminal. I was wondering how can I determine the value in ohms of ...
Simon Antonio Gonzalez Rodrigu's user avatar
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1 answer
64 views

Should I include a pull-up resistor for this application? simple schematic

Once the FSR is pressed the output of the comparator should go high. Since there is not really any "delicate" logic behind this schematic I was wondering if a pull-up resistor is really necessary for ...
Simon Antonio Gonzalez Rodrigu's user avatar
0 votes
1 answer
780 views

Using a force sensitive resistor (FSR) as a switch

I would like to use an FSR as an on/off switch. I want to implement it using an 8-bit 328p processor (either on an Arduino or an AtMega.) I'm using a voltage divider between the FSR and a 10K ohm ...
Simon Antonio Gonzalez Rodrigu's user avatar
1 vote
1 answer
462 views

Limit current through Force Sensing Resistor

I am using an ICL7660 chip to provide a negative reference supply to an inverting op-amp set up for a Force Sensing Resistor (FSR). The minimum resistance of the FSR is about 1kohm, this means that ...
Luke Pitman's user avatar
1 vote
0 answers
147 views

Is there a way to make a force sensitive resistor vary its resistance from 0 Ω to 5kΩ?

I want to replace a potentiometer with a force sensitive resistor (FSR.) I’ve bought one that varies from 1kg —0g. I don’t need the middle pin of the pot, I need it to work as a resistor. My circuit ...
Rodrigo's user avatar
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2 answers
88 views

What type of pin in this (see picture)? I see them in FSRs but they don't appear to be Dupont connectors

Here are the images of the pins: And here is the FSR that it came from:
pinkie pAI's user avatar
0 votes
1 answer
488 views

Reading 13 FSR over a multiplexer

I've made a design for reading 13 FSR with only 1 channel ADC. I want to apply the DAC voltage to only one of the FSRs using MUX. But when I choose one, I see voltage in others. For example, when I ...
Berker Işık's user avatar
0 votes
1 answer
1k views

How to attach a clincher connector to a FSR

How do you attach an Amphenol FCI "clincher connector" to a thin film force sensitive resistor? I see several sites selling these connectors explicitly for making it easier to wire FSRs, but almost no ...
Cerin's user avatar
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