Comments on: RGB desktop clock

By: Math Campbell

Math Campbell — Wed, 03 Sep 2008 16:58:53 +0000

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!

By: strider_mt2k

strider_mt2k — Tue, 02 Sep 2008 14:25:09 +0000

that is slick.

really really nice work there man.

By: Amos

Amos — Tue, 02 Sep 2008 09:11:39 +0000

@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!

By: amk

amk — Tue, 02 Sep 2008 08:22:44 +0000

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?

By: Mark Roy

Mark Roy — Tue, 02 Sep 2008 05:53:08 +0000

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.

By: jetblack

jetblack — Tue, 02 Sep 2008 05:00:08 +0000

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

By: Gary

Gary — Tue, 02 Sep 2008 04:38:20 +0000

Wooo!

The Decemberists in the background!

My fav band :D

By: Ben

Ben — Tue, 02 Sep 2008 04:13:19 +0000

First comment – just had to say very cool.

By: Mark Roy

Mark Roy — Tue, 02 Sep 2008 02:47:36 +0000

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.

By: .~.

.~. — Tue, 02 Sep 2008 02:45:45 +0000

Very Cool!

By: Aquify

Aquify — Tue, 02 Sep 2008 02:18:09 +0000

now thats awesome.

how on 0.7v though?