{"product_id":"hall-effect-sensor-us5881lua","title":"Hall effect sensor (US5881LUA)","description":"\u003cp\u003eHall effect sensors detect whether a magnet is near. Useful for non-contact\/waterproof type switches, position sensors, and rotary\/shaft encoders. I tried dozens of different hall effect sensors to see which one would work best for the SpokePOV kit (to determine the wheel location) and this one came out on top!\u003c\/p\u003e\n\u003cp\u003eRuns from 3.5V up to 24V. To use connect power to pin 1 (all the way to the left), ground to pin 2 (middle) and then a 10K pull-up resistor from pin 3 to power. Then listen on pin 3, when the south pole of a magnet is near the front of the sensor, pin 3 will go down to 0V. Otherwise, it will stay at whatever the pullup resistor is connected to. Nothing occurs if a magnet's north pole is nearby (unipolar).\u003c\/p\u003e\n\u003cp\u003eWorks fantastic with the high-strength magnet – Read the datasheet.\u003c\/p\u003e\n\u003cp\u003eRead a nice whitepaper from the manufacturer with many ideas and designs for use.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.51mm\/0.06in\u003c\/li\u003e\n\u003cli\u003eWidth: 4.08mm\/0.16in\u003c\/li\u003e\n\u003cli\u003eHeight: 3.00mm\/0.12in\u003c\/li\u003e\n\u003cli\u003eWeight: 0.1g\/0.004oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"The Pi Hut","offers":[{"title":"Default Title","offer_id":52217208078624,"sku":"dow1787257245023","price":1.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/3231\/3120\/files\/hall-effect-sensor-us5881lua_1.jpg?v=1787257249","url":"https:\/\/www.elmwoodbasket.shop\/products\/hall-effect-sensor-us5881lua","provider":"My Store","version":"1.0","type":"link"}