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I used [[http://fritzing.org/|Fritzing]] to lay out a two-layer !SpiffChorder development board and a submitted an order for the prototype to [[http://fab.fritzing.org/|Fritzing Fab]]. The fabrication cost for one unit, including international shipping to the USA, was roughly US$40. I'll post pictures once it arrives in a couple weeks and I have a chance to run tests, but here are some preliminary details: = Printed Circuit Board Layout =
I used [[http://fritzing.org/|Fritzing]] to lay out a two-layer !SpiffChorder development board and submitted an order for the prototype to [[http://fab.fritzing.org/|Fritzing Fab]]. The fabrication cost for one unit, including international shipping to the USA, was roughly US$40. I'll post pictures once it arrives in a couple weeks and I have a chance to run tests, but here are some preliminary details:
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 * [[attachment:SpiffChorderSchematic.pdf|Fritzing's schematic view (printed to PDF at 450x315mm no margins)]]  * [[attachment:SpiffChorderSchematic.pdf|Fritzing's schematic view (printed to PDF at 450x315mm with no margins)]]
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 * [[attachment:SpiffChorderGerber.zip|a ZIP archive of the Gerber export files for the QA board (sent to me by Fritzing Fab)]]  * [[attachment:SpiffChorderGerber.zip|a ZIP archive of the Gerber export files for the prototype (sent to me by Fritzing Fab)]]
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So far I'm using the same BoM from [[ManMachine/KeyerPerfboard|the perfboard design]], but 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. Here's a paper test using a 1:1 scale printout of the silkscreen and solder mask together: = Bill of Materials =
So far I'm using the same BoM from [[ManMachine/KeyerPerfboard|the perfboard design]], but 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.

= Paper Placement Test =
Here's a paper test using a 1:1 scale printout of the silkscreen and solder mask together:
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= Connector Detail =
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Printed Circuit Board Layout

I used Fritzing to lay out a two-layer SpiffChorder development board and submitted an order for the prototype to Fritzing Fab. The fabrication cost for one unit, including international shipping to the USA, was roughly US$40. I'll post pictures once it arrives in a couple weeks and I have a chance to run tests, but here are some preliminary details:

Bill of Materials

So far I'm using the same BoM from the perfboard design, but 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.

Paper Placement Test

Here's a paper test using a 1:1 scale printout of the silkscreen and solder mask together:

attachment:SpiffChorderPaperTest.jpg

Connector Detail

The 0.1" pitch right-angle screw terminal blocks I used are just slightly longer than 0.4" each. So as to be able to fit the four for CON3-4 directly adjacent to one another, I lightly sanded the facing sides until they fit snugly but evenly in a piece of perfboard. In an effort to make it easier to solder these evenly on the board, I attached their sides together 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)

CC0 To the extent possible under law, the creator of this work has waived all copyright and related or neighboring rights to it.