--- In "Yan Seiner" <> wrote:
>
> Does anyone have a source for an 8 channel relay board that works on
> 5V? I've found lots of 12V relay boards like this one:
>
>
<http://robokitsworld.com/index.php?main_page=product_info&products_id=213>
>
> but I'd rather not be dealing with 2 power supplies.... I need
> something that's powered from the same 5V as the TS boards, and that
> can use the 3.3V output from the DIO header on the mainboard.
>
> I know I can build one, but this is for a 1-off project, so I'd rather
> buy off-the-shelf if I can....
>
> --Yan
>
You might want to look into the TS relay, I'm not sure if it works
with the same power supply but I'm under the impression it does. You
could TS directly. The nice thing about it is it comes ready if your
TS board has PC/104 expansion (a lot of the TS ARM boards do)
http://www.embeddedarm.com/products/board-detail.php?product=TS-RELAY8
If you can't use that one then I'd recommend looking for a buffered 5V
board. Generally 3.3V is enough to be detected as a logical '1' by a
digital buffer. I can't guarantee it, but it generally works.
Cheers,
Alberto
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