{"id":525,"date":"2020-06-17T12:57:09","date_gmt":"2020-06-17T12:57:09","guid":{"rendered":"https:\/\/immerhax.com\/?p=525"},"modified":"2020-06-19T09:00:32","modified_gmt":"2020-06-19T09:00:32","slug":"bkm-129x-compatible-full-size-version","status":"publish","type":"post","link":"https:\/\/immerhax.com\/?p=525","title":{"rendered":"BKM-129X compatible, full size version"},"content":{"rendered":"\n

So, latest addition to the family of BKM-129X compatibles, is a full size BNC version. <\/p>\n\n\n\n

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BKM-129X compatible, full size version<\/figcaption><\/figure>\n\n\n\n

This is functionally quite close to the original, as it now has BNC outputs also. Since I couldn’t find BNC plugs featuring auto-termination (at a reasonable cost at least), I decided to add a switch to each signal which will either terminate to 75 Ohm, or enable passthrough of the signal to the OUT port. <\/p>\n\n\n\n

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Top view<\/figcaption><\/figure>\n\n\n\n

It is then possible to set the switches to OFF (down) and use external terminators, or simply skip mounting the switches altogether, and add a jumper\/0 Ohm resistor to the lower left two pins of each switch footprint, and then use external terminators.<\/p>\n\n\n\n

The board requires the same Arduino with the BKM-129X-MCU code, directly programmed to the Arduino with a programmer (read some of my previous posts regarding this).<\/p>\n\n\n\n

The MCU code is here: https:\/\/github.com\/skumlos\/bkm-129x-mcu<\/p>\n\n\n\n

The Kicad project for the board here: https:\/\/github.com\/skumlos\/bkm-129x-simple-full<\/p>\n\n\n\n

The 3D printable bracket here: https:\/\/www.thingiverse.com\/thing:4462796<\/p>\n\n\n\n

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Card inserted to PVM-9L2<\/figcaption><\/figure>\n\n\n\n
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Two 9L2s connected, bottom is the full size card (before bracket)<\/figcaption><\/figure>\n\n\n\n
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SNES with passthrough<\/figcaption><\/figure>\n\n\n\n

Please copy, share, produce and become rich, of this \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"

So, latest addition to the family of BKM-129X compatibles, is a full size BNC version. This is functionally quite close to the original, as it now has BNC outputs also. Since I couldn’t find BNC plugs featuring auto-termination (at a reasonable cost at least), I decided to add a switch to each signal which will … Continue reading BKM-129X compatible, full size version<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-525","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/posts\/525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/immerhax.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=525"}],"version-history":[{"count":3,"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/posts\/525\/revisions"}],"predecessor-version":[{"id":528,"href":"https:\/\/immerhax.com\/index.php?rest_route=\/wp\/v2\/posts\/525\/revisions\/528"}],"wp:attachment":[{"href":"https:\/\/immerhax.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/immerhax.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/immerhax.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}