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| The printed circuit version is in progress using [[http://fritzing.org/|Fritzing]], and an order has been placed to [[http://fab.fritzing.org/|Fritzing Fab]] for a prototype to QA. I'll post pictures once it arrives in a couple weeks, but here are some tidbits to tantalize: | This printed circuit development board was laid out using [[http://fritzing.org/|Fritzing]], and an order has been placed to [[http://fab.fritzing.org/|Fritzing Fab]] for a prototype to QA. I'll post pictures once it arrives in a couple weeks, but here are some tidbits to tantalize: |
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| * [[attachment:SpiffChorderSchematic.pdf|Fritzing's schematic view (printed to PDF at 450x315mm no margins]] * [[attachment:SpiffChorderEtchable.pdf|etchable PDF export (combined with pdfunite from popler-utils]] |
* [[attachment:SpiffChorderSchematic.pdf|Fritzing's schematic view (printed to PDF at 450x315mm no margins)]] * [[attachment:SpiffChorderEtchable.pdf|etchable PDF export (combined using pdfunite from poppler-utils)]] |
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So far I'm using the same BoM from [[../KeyerPerfboard|the perfboard design]]. Here's a paper test using a 1:1 scale printout of the silkscreen and solder mask together: [[attachment:SpiffChorderPaperTest.png|{{attachment:SpiffChorderPaperTestThumb.png||SpiffChorder Paper Test}}]] I'll probably switch up CON1 with Digikey part 609-2845-ND (vertical rather than right-angle) so as not to block the lower-left mounting hole. Also, the 0.1" pitch right-angle screw terminal blocks I used are just slightly longer than 0.4", so I lightly sanded down the facing sides for CON3-4 until they fit snugly but evenly in a piece of perfboard and then attached them to one another with a tiny dab of quick-setting adhesive gel (being careful not to get it into the terminals themselves): [[attachment:SpiffChorderScrewTerminalSanding.png|{{attachment:SpiffChorderScrewTerminalSandingThumb.png||SpiffChorder Screw Terminal Sanding}}]] [[attachment:SpiffChorderScrewTerminalsGlued.png|{{attachment:SpiffChorderScrewTerminalsGluedThumb.png||SpiffChorder Screw Terminals Glued}}]] |
This printed circuit development board was laid out using Fritzing, and an order has been placed to Fritzing Fab for a prototype to QA. I'll post pictures once it arrives in a couple weeks, but here are some tidbits to tantalize:
Fritzing's schematic view (printed to PDF at 450x315mm no margins)
etchable PDF export (combined using pdfunite from poppler-utils)
So far I'm using the same BoM from the perfboard design. Here's a paper test using a 1:1 scale printout of the silkscreen and solder mask together:
I'll probably switch up CON1 with Digikey part 609-2845-ND (vertical rather than right-angle) so as not to block the lower-left mounting hole. Also, the 0.1" pitch right-angle screw terminal blocks I used are just slightly longer than 0.4", so I lightly sanded down the facing sides for CON3-4 until they fit snugly but evenly in a piece of perfboard and then attached them to one another with a tiny dab of quick-setting adhesive gel (being careful not to get it into the terminals themselves):
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