{"product_id":"apple-preserves-3-5-sync-sensor","title":"Apple Preserves 3.5\" Sync Sensor","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eA precision Hall-effect track sync sensor for the Apple Preserves FDC, designed for 3.5\" drives. The sync sensor anchors each track's start to within about 1 µs, so flux captures can slip by at most a single bit cell — the foundation the FDC's copy-protection analysis is built on.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis version is laid out for the tighter space of 3.5\" mechanisms. Installation requires some disassembly of the drive to mount the sensor and magnet; an installation video is coming soon.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIncludes a precision neodymium magnet. The sensor reads the magnet once per revolution, giving the FDC a precise track-start reference.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eBuilt-in test mode: a USB-C port and onboard LED let you verify the sensor without any other hardware. Just apply USB power and pass the magnet by the sensor tip — the LED lights on each pass, giving you instant confirmation that the sensor and magnet are aligned before you finish the install.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eWorks with the Apple Preserves FDC. The FDC supports two drives and two sync sensors, so you can run a 5.25\" and a 3.5\" sensor together, or add a second sensor as a spare.\u003c\/p\u003e","brand":"Apple Preserved","offers":[{"title":"Default Title","offer_id":52785736384832,"sku":null,"price":12.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5358\/4192\/files\/20260712_153207.jpg?v=1783886677","url":"https:\/\/applepreserved.com\/products\/apple-preserves-3-5-sync-sensor","provider":"Apple Preserved","version":"1.0","type":"link"}