{"id":8114,"date":"2006-03-20T21:34:00","date_gmt":"2006-03-21T02:34:00","guid":{"rendered":"https:\/\/nuxx.net\/blog\/2006\/03\/20\/paia-fatman-subharmonic-generator\/"},"modified":"2026-07-01T11:34:17","modified_gmt":"2026-07-01T15:34:17","slug":"paia-fatman-subharmonic-generator","status":"publish","type":"post","link":"https:\/\/nuxx.net\/blog\/2006\/03\/20\/paia-fatman-subharmonic-generator\/","title":{"rendered":"PAiA FatMan Subharmonic Generator"},"content":{"rendered":"<p><center><a href=\"https:\/\/nuxx.net\/blog\/wp-content\/uploads\/2026\/06\/paia_fatman_subharmonic_generator_pcb.jpg\"><img decoding=\"async\" src=\"https:\/\/nuxx.net\/blog\/wp-content\/uploads\/2026\/06\/paia_fatman_subharmonic_generator_pcb.jpg\" height=325 width=640 border=0><\/a><br \/>My first hand-designed and photo resist etched PCB.<br \/>(Click for full 600dpi scan&#8230;)<\/center><\/p>\n<p>Well, that went well. What you see above is my first hand-etched PCB, and is also a layout I did myself. That right there is the PCB I&#8217;m going to add to the PAiA FatMan which I am rebuilding, and provided I interpreted <a href=\"http:\/\/home1.gte.net\/res0658s\/fatman\/subharm2.html\">the schematic for the part<\/a> correctly, that should add two extra octaves of harmony to this synth, giving it some nice, thundering bass.<\/p>\n<p>I should mention that the traces are a shiny silver in person, although I&#8217;m not completely sure that I tinned them enough. Also, yes, one of the pads on the left side isn&#8217;t quite right. I&#8217;m not sure what is with it, as it appears to just be matte in person. It doesn&#8217;t matter too much, though, as the reason I made two is to both use up space on the board (it&#8217;s 2&#8243; x 4&#8243; and my design was nowhere near that large) and so that if one got screwed up, there would be a second.<\/p>\n<p>So, I guess at this point I&#8217;m ready to try etching <a href=\"http:\/\/www.maxmidi.com\/diy\/sk1\/\">the double sided board for adding MIDI to my Casio SK-1<\/a>. I would have done it tonight, but it is getting a bit late to start everything over from scratch&#8230;<\/p>\n<p>Anyway, yeah. This makes me happy. Hopefully tomorrow I&#8217;ll be getting the order from Mouser which will contain the new resistors for my x0xb0x <em>(photo gallery retired)<\/em>, parts for the FatMan rebuild, and the new pots for the Elenco XP-720K <em>(photo gallery retired)<\/em>.<\/p>\n<p>Mmm&#8230; Projects&#8230;<\/p>\n<p><strong>UPDATE:<\/strong> Damnit. I don&#8217;t know how I didn&#8217;t notice it until just now, but there is a 90\u00ba bend in one of the traces, when I tried to do everything in&#8230; Well&#8230; Not 90\u00ba joints. Guh. I feel like an idiot, because i know this is one thing that I was trying to avoid&#8230; And I somehow missed it in all the times I stared at the printout.<\/p>\n<p>Ah well, It&#8217;s only a power line, so it shouldn&#8217;t hurt anything&#8230; I still feel dumb about it, though.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My first hand-designed and photo resist etched PCB.(Click for full 600dpi scan&#8230;) Well, that went well. What you see above is my first hand-etched PCB, and is also a layout I did myself. That right there is the PCB I&#8217;m going to add to the PAiA FatMan which I am rebuilding, and provided I interpreted\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,11,34],"tags":[],"class_list":["post-8114","post","type-post","status-publish","format-standard","hentry","category-electronics","category-making-things","category-moved-from-livejournal"],"_links":{"self":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/comments?post=8114"}],"version-history":[{"count":1,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8114\/revisions"}],"predecessor-version":[{"id":13515,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/posts\/8114\/revisions\/13515"}],"wp:attachment":[{"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/media?parent=8114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/categories?post=8114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuxx.net\/blog\/wp-json\/wp\/v2\/tags?post=8114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}