<div dir="ltr"><div>Hey so I have a mostly finished project that could definitely be re-purposed for this. Has those rtc modules, three digits per unit. Arduino, runs on 3x AA batteries each. Speakers built in too. If you're around Monday evening I can bring them in to take a look at. As mentioned the code would be pretty simple. Pics here -<br><br><a href="http://imgur.com/a/uSNnN">http://imgur.com/a/uSNnN</a><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jan 28, 2016 at 9:37 AM, Alan Cox <span dir="ltr"><<a href="mailto:alan@lxorguk.ukuu.org.uk" target="_blank">alan@lxorguk.ukuu.org.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">> Ideally it would be something that I could run off a re-chargeable battery<br>
> pack for portability but plugging in would be okay.<br>
><br>
> Would this be a Raspberry Pi project or would you recommend an Arduino?<br>
><br>
> All suggestions very gratefully received...<br>
<br>
</span>I would think pretty much any tiny microcontroller can do it. SPI rtc,<br>
SPI led driver and that's about it. The program ought to be tiny and the<br>
data file you need is 366 bits. Even the lazy man's version is going to be<br>
under 1KB (table with the correct number to show for each 'day of the<br>
year').<br>
<br>
A PI would be able to run ntp, scrape the government web sites and adjust<br>
if they change the official bank holiday list but does draw somewhat<br>
higher power.<br>
<span class="HOEnZb"><font color="#888888"><br>
Alan<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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