{"product_id":"force-sensitive-resistor-fsr","title":"Fsr402 Force Sensitive Resistor Fsr","description":"\u003cp\u003eThe FSR is made of 2 layers separated by a spacer. The more one presses, the more of those Active Element dots touch the semiconductor and that makes the resistance go down. FSRs are basically a resistor that changes its resistive value (in ohms Ω) depending on how much it is pressed. These sensors are fairly low cost, and easy to use but they're rarely accurate. They also vary some from the sensor to sensor perhaps 10%. So basically when you use FSRs you should only expect to get ranges of response. While FSRs can detect weight, they're a bad choice for detecting exactly how many pounds of weight are on them. However, for most touch-sensitive applications like \"has this been squeezed or pushed and about how much\" they're a good deal for the money!\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/Force-Sensitive-Resistor-FSR-In-Lahore-Islamabad-Karachi-Faislabad-Multan-Quetta-Sukkur-Pakistan-2.jpg\" data-original=\"https:\/\/hallroad.digilog.pk\/images\/detailed\/31\/Force_Sensitive_Resistor_FSR_In_Lahore_Islamabad_Karachi_Faislabad_Multan_Quetta_Sukkur_Pakistan___2_.jpg\" alt=\"Fsr402 Force Sensitive Resistor Fsr\" loading=\"lazy\" data-files=\"Force-Sensitive-Resistor-FSR-In-Lahore-Islamabad-Karachi-Faislabad-Multan-Quetta-Sukkur-Pakistan-2.jpg\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"row-fluid build-text\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row-fluid build-image\"\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/assets\/428\" title=\"Adafruit learning system\" aria-label=\"Visit a webpage about Adafruit learning system\"\u003e\u003cimg alt=\"force___flex_FSRimage.jpg\" class=\"428-asset img-responsive\" src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/force-flex-FSRimage.jpg\" data-original=\"https:\/\/cdn-learn.adafruit.com\/assets\/assets\/000\/000\/428\/medium800\/force___flex_FSRimage.jpg?1396762943\" loading=\"lazy\" data-files=\"force-flex-FSRimage.jpg\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"row-fluid build-text\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"row-fluid build-text\"\u003e\n\u003ch2\u003eSome Basic Stats\u003c\/h2\u003e\n\u003cp\u003eThese stats are specifically for the Interlink 402, but nearly all FSRs will be similar. Checking the datasheet will always illuminate any differences\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1\/2\" (12.5mm) diameter active area by 0.02\" thick (Interlink does have some that are as large as 1.5\"x1.5\")\u003c\/li\u003e\n\u003cli\u003ePrice \u003ca href=\"https:\/\/www.adafruit.com\/product\/166\" title=\"Round force-sensitive resistor (fsr) - 0.3 ~ 10 newton force [alpha mf01a-n-221-a01] : id 166 : $3.95 : adafruit industries, unique \u0026amp; fun diy electronics and kits\" aria-label=\"Visit a webpage about Round force-sensitive resistor (fsr) - 0.3 ~ 10 newton force [alpha mf01a-n-221-a01] : id 166 : $3.95 : adafruit industries, unique \u0026amp; fun diy electronics and kits\"\u003e$7.00 from the Adafruit shop\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eResistance range: Infinite\/open circuit (no pressure), 100KΩ (light pressure) to 200Ω (max. pressure)\u003c\/li\u003e\n\u003cli\u003eForce range: 0 to 20 lb. (0 to 100 Newtons) applied evenly over the 0.125 sq in surface area\u003c\/li\u003e\n\u003cli\u003ePower supply: Any! Uses less than 1mA of current (depends on any pullup\/down resistors used and supply voltage)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn-learn.adafruit.com\/assets\/assets\/000\/010\/126\/original\/fsrguide.pdf\" title=\"Datasheet\" aria-label=\"Visit a webpage about Datasheet\"\u003eDatasheet\u003c\/a\u003e (note there are some mathematical inconsistencies in here)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row-fluid build-text\"\u003e\n\u003ch2\u003eHow to measure force\/pressure with an FSR\u003c\/h2\u003e\nAs we've said, the FSR's resistance changes as more pressure is applied. When there is no pressure, the sensor looks like an infinite resistor (open circuit), as the pressure increases, the resistance goes down. This graph indicates approximately the resistance of the sensor at different force measurements. (Note that force is not measured in grams and what they really mean is Newtons * 100!)\u003c\/div\u003e\n\u003cdiv class=\"row-fluid build-image\"\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/assets\/429\" title=\"Adafruit learning system\" aria-label=\"Visit a webpage about Adafruit learning system\"\u003e\u003cimg alt=\"force___flex_resistanceforce.jpg\" class=\"429-asset img-responsive\" src=\"https:\/\/digilog.pk\/cdn\/shop\/files\/force-flex-resistanceforce.jpg\" data-original=\"https:\/\/cdn-learn.adafruit.com\/assets\/assets\/000\/000\/429\/medium800\/force___flex_resistanceforce.jpg?1396762946\" loading=\"lazy\" data-files=\"force-flex-resistanceforce.jpg\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003eIt is important to notice that the graph isn't really \u003cem\u003elinear\u003c\/em\u003e (its a log\/log graph) and that at especially low force measurements it quickly goes from infinite to 100KΩ.\u003c\/p\u003e","brand":"Digilog Electronics","offers":[{"title":"Default Title","offer_id":43962408009793,"sku":"B406,IMP10,Th5,A","price":700.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/2805\/1777\/files\/Force_Sensitive_Resistor_FSR_In_Lahore_Islamabad_Karachi_Faislabad_Multan_Quetta_Sukkur_Pakistan___1.jpg?v=1779578913","url":"https:\/\/stem.pk\/products\/force-sensitive-resistor-fsr","provider":"stem.pk","version":"1.0","type":"link"}