If you’re building a project that needs to sense pressure or touch, you may end up using an FSR. An FSR circuit is a dedicated sensor that varies its resistance when force is applied. In this guide, you will learn what an FSR is, how to use an FSR, and then some special considerations and particular circuits that you may use an FSR with.
An FSR circuit, or force sensitive resistor circuit, haw a force sensitive resistor that is hooked up to other components such as resistors and a microcontroller. When you push down on the FSR, its resistance decreases. This means that the circuit can carry electricity. The harder you press, the less resistance there is, and you can measure exactly how hard the strip is being pressed to trigger an action in your project.
In order to build an FSR circuit, you will need to select the appropriate components and connect them properly. First, select an FSR that can detect the range of pressure you'd like to pick up. Finally, wire up the FSR in a special setup so that you can derive a voltage output that varies with pressure! Finally, put this output into a microcontroller and read the voltage changes in it then make that do something.
An FSR circuit can have problems like any other electronic circuit. If you receive wacky readings, or no reading at all when you press it, confirm that the connections between the parts are secure. Also, make sure the FSR you use is calibrated to the pressure range you want to measure. If you continue experiencing these kind of problems, you may want to replace the FSR yourself, or ask a more experienced person for help.
To make your FSR circuit more sensitive, And for that matter, one good quality FSR will work just fine as it can sense both small and large forces over a wide range. Also, you will have to set the FSR to the pressure range you are using to get correct readings. You can calibrate the sensitivity by replacing the resistors in your circuit. Experiment with various setups before you find what is best for your project.
As technology advances, FSR circuits would be essential in a wide range of applications. FSR circuits can be used in touchscreens, medical devices, and more to aid in pressure and touch sensing. As long as researchers and innovators continue to create new things in sensor technology, we can expect to see some amazing new innovative uses of FSR circuits.
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