[Ovmsdev] Prototyping expansion board

[Brian Greenberg]

Put me down for package - I've been thinking about driving a handful of
relays for various things, and have been thinking about having a small
number of boards like this done - it's pretty much impossible to find a
generic prototype board with 2mm pitch holes...

Although I'm no designer....

  - What about extending the 12V rail all the way to the end of column 16,
parallel to the ground rail?
  - Currently, all the holes are isolated. Would there be any benefit to
connecting the holes in each row in groups of 3 or 4?


Brian.

On Wed., Apr. 17, 2019, 19:37 Mark Webb-Johnson, <mark at webb-johnson.net>
wrote:

> It seems the attachments were messed up, so attaching again…
>
> Regards, Mark.
>
>
>
> On 17 Apr 2019, at 10:07 PM, Mark Webb-Johnson <mark at webb-johnson.net>
> wrote:
>
>
> Design layout. Looks good to me, but open to suggestions...
>
>
> We can make in sets of three PCBs, to keep prices down.
>
>
> Regards, Mark
>
>
> On 8 Apr 2019, at 12:05 PM, Mark Webb-Johnson <mark at webb-johnson.net>
> wrote:
>
>
> A kit of 5 PCBs + SIP edge connectors + mounting hardware, unsoldered,
> would be about US$15 + shipping. About US$3/board set. With shipping I
> don’t think this is worth doing with less than 3 or 5 boards per kit.
>
> Would this be useful?
>
> Regards, Mark.
>
> On 7 Apr 2019, at 9:08 PM, Mark Webb-Johnson <mark at webb-johnson.net>
> wrote:
>
> This is the closest we have today:
>
> <image1.jpeg>
>
> That is a bare modem board, with just the sip connectors. The prototype
> above is a K-line transceiver.
>
> I think it would be trivial, and cheap, to make up what you show. Perhaps
> just solder ready pads at 0.1” pitch, then the side sip connectors wired to
> the first row of pads at each edge. Perhaps 5 PCBs in a kit, with sip edge
> connectors, unsoldered, in a simple plastic bag.
>
> Does that sound like something useful? If so, I can ask the China guys for
> some idea of pricing. If it is just the unsoldered pcbs + parts, I don’t
> think it will be expensive.
>
> Regards, Mark
>
> On 7 Apr 2019, at 4:38 PM, Michael Balzer <dexter at expeedo.de> wrote:
>
> Mark,
>
> do you know of some kind of prototyping board available that fits to our
> piggy back expansion layout?
>
> Something like this:
> https://www.robotshop.com/de/de/cytron-arduino-proto-schild.html
>
> Regards,
> Michael
>
>
> Am 03.04.19 um 06:48 schrieb Mark Webb-Johnson:
>
>
> If you have work to do on this DA26 expansion ports, this is pretty cool
> and well built:
>
>
> https://www.aliexpress.com/item/26-Pin-D-SUB-DB26-3-Rows-Serial-Parallel-Port-Serial-Shellless-Male-And-Female-Connector/32886738786.html?spm=a2g0s.9042311.0.0.20924c4dg34EEU
>
>
>
>
>
>
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> --
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>
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