Questions tagged [fsr]
Force-sensing resistors are devices whose resistance changes with pressure / stress.
11
questions
5
votes
2
answers
461
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 ...
- 53
0
votes
1
answer
70
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 ...
- 101
0
votes
1
answer
404
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 ...
1
vote
1
answer
208
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 ...
0
votes
1
answer
57
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 ...
0
votes
1
answer
548
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 ...
1
vote
1
answer
329
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 ...
- 17
1
vote
0
answers
127
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 ...
- 467
0
votes
2
answers
83
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:
0
votes
1
answer
394
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 ...
- 445
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 ...
- 4,469