Hey guys, I haven't posted here in ages, but I've finally finished a new project: a binary pocket watch! I figured that's portable and geeky enough to be appropriate here.

And here's some pictures:


This is using a chip intended for nixie clocks because I'm too lazy to program my own microcontroller. It runs on 4AA batteries, which will hopefully last a while.


The time displays when you hold down the bottom button, and the 2 on the side are for setting the time.


Here it is turned on. It's 12:06 because I took this picture before setting the time.


The back is an embarassing mess of chopped up ide cable.


Looks pretty cool in the dark.


And here's a chopped up nimh 9v battery I'm considering using to make it a wristwatch, albeit a really huge one.

I'm pretty sure this is the coolest thing I've ever made.

That is pretty cool.
Give it a tinted glass cover so that only lit LEDs are visible.
Also, try powering it with a 9v button cell or two.
AAs are TOTALLY overkill.

Slick, I like it!

SS

you should make that binary wrist-watch. wear your geekiness with pride!

Neat. Is that an atmega8?

Yep.

And now it's a wristwatch!

All I need to do now is add some sort of charging circuit for the batteries. Probably using USB.

Nice!

omg! the back, I don't know how you stand doing that without color coded wires, I mean come on, it is so much easier to follow a wire of a different color than a gray one in a tangle like that

you just gotta solder then chronologically. What I mean by that is that you start with pin 1 on the atmega, and keep soldering till you're at the end.

It really wasn't very hard to keep everything organized since it's so small. I didn't even go in any particular order. Though I did occasionally have to desolder and move some wires out of the way temporarily because they covering up something I was trying to get at. And I forgot to attach the top left LED, but it never lights up anyway.

gotta get a picture of you wearing it.

I replaced the batteries with 3 nicd AAAs (cuz I'm too cheap to buy nimhs), and added some pin headers to attach a (currently nonexistant) charging cable to.



Oh, fine.

Too cool,man. Too cool. I like the USB idea. I like the whole thing in general. And nice sig.

SS

I got the sig from a 10 page packet of engineering jokes my dad brought home from work one day. Guess it runs in the family...

I finally made a charging cable once the battery died (only lasted 2 days ). I ended up hooking it up to an RC battery smart charger, which can fully charge it in ~15 minutes. And I'll probably pick up some nimhs the next time harbor freight has them on sale. Those should last 4 or 5 days.

And there's another slight problem: it occasionally resets the time to 12:00 for some reason. Dunno why that happens.

you can put the squematic and the hex file and program asm or c for made some for me thanks for help me