now thats awesome.

how on 0.7v though?

Posted at 7:18 pm on Sep 1st, 2008 by Aquify

Very Cool!

Posted at 7:45 pm on Sep 1st, 2008 by .~.

The clock uses a max1675 switching mode power supply that is cabable of boosting the voltage from 0.7V to 5V (or 3.3V).

The converter works by essentially charging an inductor and when it discharges, the voltage is dependant on the rate of change of current and not the input voltage, thus allowing for output voltages that differ from the input. Check wikipedia’s entry on boost converters for more details.

Posted at 7:47 pm on Sep 1st, 2008 by Mark Roy

First comment – just had to say very cool.

Posted at 9:13 pm on Sep 1st, 2008 by Ben

Wooo!

The Decemberists in the background!

My fav band :D

Posted at 9:38 pm on Sep 1st, 2008 by Gary

i don’t care for it sleeping to save power but it looks great while its on

Posted at 10:00 pm on Sep 1st, 2008 by jetblack

Some people have mentioned the issue with the going to sleep periodically.

I’d like to mention that I was thinking a solution to this would be to add a power jack or USB cable to allow the clock to be powered continuously. The beuty of the power supply is that you can give it upto 5V without any problems.

Posted at 10:53 pm on Sep 1st, 2008 by Mark Roy

very cool mark. i’d recommend including the optional possibility of USB power supply before you release the kit. have you put any work/thought into an enclosure?

Posted at 1:22 am on Sep 2nd, 2008 by amk

@Mark

Great idea and execution! I’d love to make/have one on my desk.

This is not meant as an insult, just a tip for “next time”:

If you can, put your webcam software into “mirror” mode (or use an actual mirror if it’s handy) and it will be easier to keep the item you’re demo’ing on the screen and to refer to its features.

Just thought I’d mention it…

Keep up the good work!

Posted at 2:11 am on Sep 2nd, 2008 by Amos

that is slick.

really really nice work there man.

Posted at 7:25 am on Sep 2nd, 2008 by strider_mt2k

Very very cool.

One thought I immediately had was (being I a fan of TokyoFlash LED watches, have one right here) that this is a great candidate for conversion to a watch.

Do you think it’s possible to squeeze the pcb a lot smaller, and get the voltage needed down to that supplyable with a standard watch battery…

It’d be the coolest watch ever!
It’s already the coolest clock!

Posted at 9:58 am on Sep 3rd, 2008 by Math Campbell