Extra-long force-sensitive resistor (FSR) [Interlink 408]

FSRs are amazing sensors that can detect physical pressure, squeezing, and weight. They're super easy to use and very affordable. This particular sensor is an Interlink model 408 FSR with a huge 1/4 - inch x 24 - inch sensing region. You can press anywhere on the strip, and it'll recognize the pressure. But keep in mind, it can't tell you exactly where on the strip you pressed. For that, you can check out our ribbon soft pots. FSRs work like a resistor whose resistance (in ohms Ω) changes based on how much you press. They're low - cost and easy to use, but not very accurate, with a variation of about 10% between sensors. So, when using FSRs, expect to get a range of responses rather than precise measurements. They can detect weight, but aren't great for measuring exact pounds. FSRs are made of plastic with a connection tab on delicate material. The best way to connect them is to plug into a breadboard or use a clamp - style connector like alligator clips, female header, or a terminal block. Soldering is possible, but you need to be really fast. If your soldering iron isn't good or you take too long, you'll melt the plastic and ruin the FSR. Don't solder directly to the FSR unless you're confident in your skills. For a full tutorial with wiring diagrams, code examples, and project ideas, check out the FSR tutorial page!

Using this Force Sensitive Resistor (FSR) is quite straightforward. First, to connect it, you can either plug it into a breadboard or use a clamp - style connector like alligator clips, female header, or a terminal block. Avoid soldering to it unless you're really good at it because the plastic parts can melt easily. When using the FSR, remember that it can detect physical pressure, squeezing, and weight, but it won't tell you exactly where on the strip you pressed. Also, don't expect super - accurate measurements as there can be about a 10% variation between sensors. As for maintenance, keep it away from excessive heat and rough handling to prevent damage to the plastic material. If you want more detailed guidance, check out the FSR tutorial page which has wiring diagrams, code examples, and project ideas.