Really Big Alarm Clocks

Turd · Posted: Thu Oct 11, 2007 3:35 pm Post subject: Really Big Alarm Clocks

After making this large seven segment display I decided to make something better so I made two really big alarm clocks Very Happy

Oh, and a three digit seven seg. display (actually 8 segment) but I haven't finished it yet.

My camera sucks BTW. They look a lot better then the crappy pic Wink

]My uncle made the frames and cut the plexiglass.

I started by buying the LEDs and the alarm clocks.
I cut the tops off of the LEDs and filed them so that they would be diffused. (pic)
Using a home made blade I cut out the segments after marking them out with a stencil. (pic 1, pic 2, pic 3)
A piece of copper pipe to cut out the circles. (pic)
Then marked out where to put the LEDs. (pic 1, pic 2)
I bent the leads and glued the LEDs down. (pic)
Soldered wires from the LEDs to the alarm clock circuit board. (pic 1, pic 2)
I had to spray paint the styrofoam black because the light was leaking from one segment to another. (pic 1, pic 2)
With my home made blade I cut out two layers of grocery bag and two layers of translucent film, the kind used for rapping easter baskets. (pic 1, pic 2)
Here you can see the wires going out to the buttons in the back, the alarm on/off switch, battery backup clip, piezo element, transformer and circuit board. (pic)
More crappy pics:
Pic 1
Pic 2
Pic 3
Pic 4

eric

Alan · Posted: Thu Oct 11, 2007 9:44 pm Post subject:

Wow, those are some big clocks! Great job!

Turd · Posted: Fri Oct 12, 2007 12:45 pm Post subject:

Thanks

eric

Project_Nightmare · Posted: Fri Oct 12, 2007 3:04 pm Post subject:

Just a tip so it looks nicer with the wiring, tear apart some ribbon cable from an unused computer and solder to that, I'm not sure if it's harder to do (I haven't tried it yet Confused

), but it looks a lot nicer than a bunch of jumbled wires Cool

BTW: Love the mood Twisted Evil

Hopefully if i do this, the diffused LEDs I make wouldn't explode Confused

Turd · Posted: Fri Oct 12, 2007 3:53 pm Post subject:

Good idea but I used that wire because it's pre-tinned which made it easy to use Very Happy

eric

Turd · Posted: Mon Oct 15, 2007 11:36 pm Post subject:

Heres some pics and a video of my big three digit eight segment display Very Happy

Pic 1
Pic 2
Pic 3
Pic 4
Pic 5
Video

eric

Turd · Posted: Tue Oct 16, 2007 10:26 pm Post subject:

Heres a video of it cycling through the alphabet and numbers.
Some of the characters suck pretty hard but what ever, most are ok Very Happy

eric

Rosadao · Newbie Joined: 19 Oct 2007 Posts: 3

your clock is awsome
i want to make one too
how did u connect the LEDs to the original alarm clock?
whats translucent film? (english is not my native language...)

Project_Nightmare · Posted: Fri Oct 19, 2007 1:31 pm Post subject:

I think he did it by testing each lead. I opened a clock also and the display had 16 connections. I didn't find an idenification number on it so i couldn't reference it online.

I'm not so sure what translucent film is, but I think it's tissue paper or some thin material that lets some light come through that isn't transparent (like glass).

Turd · Posted: Fri Oct 19, 2007 2:06 pm Post subject:

To figure out how to connect the LEDs I removed the white plastic face off of the screen to see how they were arranged. Be careful when doing this if you want to save the screen for later use because the LEDs are exposed and fragile.

The translucent film is just clear blue plastic "rapping paper":

eric

Rosadao · Newbie Joined: 19 Oct 2007 Posts: 3

just by curiosity...
what are the dimensions of the clock?

Turd · Posted: Mon Oct 22, 2007 11:26 am Post subject:

The clocks are 8 x 17 inches and the three digit display is 8 x 11 3/4 inches.

eric

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