Re: 24Hr/7 Day Timer
- From: Ben Jackson <ben@xxxxxxx>
- Date: Wed, 16 Nov 2005 14:51:57 -0600
On 2005-11-16, Bob <noemail@xxxxxxxxxx> wrote:
> I have a project that requires turning a plastic disc (about the same size
> as a CD) through 360 degrees in 7 days or 24 hours using a battery powered
> system of some sort. The smaller and cheaper the better! Can anyone suggest
> the best way I should approach this problem?
Do you mean switchable 24h or 7d? Also, you need to specify how many
steps you need. You could sleep for 23:59:59 and turn the disc one
turn at 60rpm in the final second! An AC timing motor could probably
do it in zillions of tiny steps. A solution with a PIC and a hobby
servo might only give you 1000 steps (1/3rd of a degree accuracy...)
--
Ben Jackson
<ben@xxxxxxx>
http://www.ben.com/
.
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- 24Hr/7 Day Timer
- From: Bob
- 24Hr/7 Day Timer
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