Friday, September 21, 2012

USB RS-485 Adapter Through Hole PCBs

Here is my first PCB design that has gone to production. I redid the schematics of my original design now implemented in Eagle and also did a two layer PCB layout. I used Seeed's PCB service to produce the PCBs, ordered parts from Digi-Key and assembled them by hand. There were two mistakes with the board. Somehow I didn't connect VCC from USB, and inadvertently connected VCC to VUSB. Three cuts and three jumpers later and the boards work fine.

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5 comments:

  1. Dave VWSeptember 21, 2012 at 3:36 PM

    ... and at least two silkscreen errors. header outline on the wrong side, and crystal caps outline missing.

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  2. CygnusAlphaFebruary 11, 2014 at 2:59 AM

    Awesome stuff. At least it's only the silk screen that's got a couple of errors. I've heard of people getting all the layers muddled and getting inside-out boards back.
    If you don't mind me asking, how much are Seeed charging?
    Nice one..
    B

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  3. Dave VWFebruary 11, 2014 at 11:54 AM

    All the mistakes were mine. Seeed did superb work with no mistakes. From memory, it was less than $10 for 10 dual layer pcbs plus about $4.50 shipping. Prices and policies may have changed since.

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  4. CygnusAlphaFebruary 12, 2014 at 5:53 AM

    Ok, not bad then. Good to get a recommendation/idea of costs. Thanks.

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  5. Dave VWFebruary 12, 2014 at 8:15 AM

    And I got 2 extra "free" boards as I was lucky enough to receive 12 instead of just 10.

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