{"id":393,"date":"2017-12-22T13:44:02","date_gmt":"2017-12-22T21:44:02","guid":{"rendered":"https:\/\/www.andersknelson.com\/blog\/?p=393"},"modified":"2023-11-01T00:37:56","modified_gmt":"2023-11-01T04:37:56","slug":"plattenlicht","status":"publish","type":"post","link":"https:\/\/www.andersknelson.com\/blog\/?p=393","title":{"rendered":"Plattenlicht"},"content":{"rendered":"\n<p><span style=\"text-decoration: underline;\">Abstract<\/span><\/p>\n\n\n\n<p>A backpack for commonly available RGB video panels, allowing longer\/simpler cable runs and local refresh.<\/p>\n\n\n\n<p><span style=\"text-decoration: underline;\">What it does<\/span><\/p>\n\n\n\n<p>I&#8217;d like to use a single-duplex RS485 data pair with possibly a separate pair to enable auto-addressing or to enable higher bandwidth bidirectional comms. The Lattice ICE40 UltraPlus has a ton of RAM for about $6, or I could save a few dollars using the ICE5LP with an external SRAM. ICE40UP contains multiplier for gamma correction and global brightness control.<\/p>\n\n\n\n<p>FPGA does local refresh, high-speed UART, frame buffering and auto-addressing. FPGA can run at 185MHz, SRAM below is 83Mhz.<\/p>\n\n\n\n<p>Power could be 12-24v, locally buck converted. Connectors could be standard box headers. Cabling could be a custom FPC to reduce profile.<\/p>\n\n\n\n<p>Alternatively, use a Lattice ECP5 with it&#8217;s 2.5Gbit SERDES block to provide pixels and float DC power to the panels.<\/p>\n\n\n\n<p><span style=\"text-decoration: underline;\">Links<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Control: https:\/\/github.com\/pixelmatix\/SmartMatrix<\/li>\n\n\n\n<li>Muilti-master sync: https:\/\/en.wikipedia.org\/wiki\/Clock_synchronization<\/li>\n\n\n\n<li>SRAM: https:\/\/www.digikey.com\/short\/jn3dbf<\/li>\n\n\n\n<li>ICE40UP: https:\/\/www.digikey.com\/short\/jn3dvh<\/li>\n\n\n\n<li>ICE5: https:\/\/www.digikey.com\/short\/jn3dvw<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Abstract A backpack for commonly available RGB video panels, allowing [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38,2],"tags":[],"class_list":["post-393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-concept","category-projects"],"_links":{"self":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=393"}],"version-history":[{"count":6,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/393\/revisions"}],"predecessor-version":[{"id":1111,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/393\/revisions\/1111"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/394"}],"wp:attachment":[{"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.andersknelson.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}