Hi -

The lava lmp board "lsgpio" - level shifted gpio - is designed for that, plus 
provides 15 other wires you can "press other buttons" with or sense LED states  
etc.

You don't need a relay channel for it.  The software interface is documented in 
the spec pdf from the wiki, it's ttyACM and ascii chars as usual.

Unfortunately I am just out the door to Korea for a week, I can send you one 
when I get back.

-Andy

Dave Pigott <[email protected]> wrote:

>
>On 21 Jan 2013, at 19:49, Michael Hudson-Doyle
><[email protected]> wrote:
>
>> Dave Pigott <[email protected]> writes:
>> 
>>> Hi all,
>>> 
>>> Looks like we have a requirement for a software controllable relay
>to
>>> physically press a reset switch on a board.
>> 
>> <facepalm/>
>> 
>> Does it _have_ to physically press the switch?  Can we snip out the
>> switch and wire a relay across instead?  You can get usb-controlled
>> relays.
>> 
>>> I've been doing some hunting but so far have come up with nothing
>that
>>> looks likely.
>>> 
>>> Requirements:
>>> 
>>> Dimensions: At present unknown until we have a physical board in our
>hands
>>> Mountable: It must be something we can attach to the shelf next to
>the board
>>> Controllable: Must have some sort of standard interface for
>operation. USB would be a preference, but at a push we could use
>another board's GPIO pins.
>>> 
>>> Anyone know of such a product?
>> 
>> I'm sure Andy Green could build one in half a day…
>
>Andy G? Any ideas?
>
>Thanks
>
>Dave
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