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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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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:

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):

back to The Man-Machine...

CCL: ManMachine/KeyerPCB (last edited 2012-07-02 21:40:29 by fungi)

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