{"product_id":"nyquist-levinson-rev-3-pcb-kit-split-ortholinear-keyboard","title":"Nyquist\/Levinson Keyboard Rev. 3.5 PCBs - 60%\/40% Split Ortholinear","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThe Nyquist is a 60% split ortholinear keyboard, that can also be converted easily to a 40% split ortholinear by breaking off the bottom row (by hand).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNyquist\/Levinson Rev. 3.5!\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eNow uses USB-C to USB-C cable for connecting two halves together instead of TRRS cable. The right half PCB has a 4-pin JST port that can be used to reflash the PCB if you decide to break off the main USB-C port (for compatibility with SP50 case). Use \u003ca href=\"https:\/\/keeb.mom\/products\/jst-sh-cable\"\u003eJST-SH cable\u003c\/a\u003e with \u003ca href=\"https:\/\/keeb.mom\/products\/micro-usb-breakout-board\"\u003eMicro-USB breakout board\u003c\/a\u003e or \u003ca href=\"https:\/\/keeb.mom\/products\/usb-c-breakout-board\"\u003eUSB-C breakout board\u003c\/a\u003e if doing this.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe Name\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe name Nyquist comes from the Nyquist sampling theorem, which says that if you want to sample a signal to convert it from analog to digital and be able to uniquely reconstruct the signal later, then the sample rate has to be twice the bandwidth of the signal. So here, if you want to sample this PCB, you're going to need 2 of them.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFirmware\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Nyquist uses QMK for its firmware, and the code for it has been merged into the main codebase. You can find it here: \u003c\/span\u003e\u003ca href=\"https:\/\/github.com\/qmk\/qmk_firmware\/tree\/master\/keyboards\/keebio\/nyquist\" title=\"QMK - Nyquist directory\" target=\"_blank\"\u003eQMK - Nyquist directory\u003c\/a\u003e. If using the Rev. 3 board in 4x12 mode, also use the Nyquist firmware, just use LAYOUT_ortho_4x12 in your keymap.\u003ca href=\"https:\/\/docs.keeb.mom\/nyquist-rev3-build-guide\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Keebio","offers":[{"title":"Nyquist\/Levinson - Rev. 3.5","offer_id":29395149291614,"sku":"NYX","price":59.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1851\/5125\/products\/nyquist-3.5.png?v=1608680127","url":"https:\/\/keeb.mom\/products\/nyquist-levinson-rev-3-pcb-kit-split-ortholinear-keyboard","provider":"Keebio","version":"1.0","type":"link"}