Surely that sort of clock is just a MOSFET, a relay and a GPIO pin. There are loads of example circuits on the web for that. For reference, a 555-based timer is not particularly accurate over long periods. The PI's internal clock (note that this is not an RTC, though real time synchronisation can be added with NTP) will do a much better job of timing long intervals.
Cheers,
Tim B.
Sent from Samsung Mobile
-------- Original message --------
From: James Courtier-Dutton <james.dutton@???>
Date:12/06/2014 11:45 (GMT+00:00)
To: linux@???,General Linux/Unix community List <surrey@???>
Cc: hampshire@???
Subject: Re: [Hampshire] [Surrey] Raspberry Pi and Solar Chargers
On 9 June 2014 13:11, <linux@???> wrote:
>
> Hi All
> I have recently set up one of my raspberry pis and a cheap webcam to film some flowers growing on my window sill however going to plug them in last night I realised the nearest plug socket is miles away.
What about mains extension lead? Like the 100Meter ones you can get at
WIckes, B&Q, Homebase. etc.
It sounds to me that also having something clock triggered that could
power down the camera most of the time, power it up once every X
hours, take a picture, power down again. Unfortunately, the PI does
not have a clock like that.
Kind Regards
James
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Please post to: Hampshire@???
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