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Category: Electronics

This is my first non-nixie clock.  Built using the schematic and code provided by José Pino .

7 Segment Clock

José has provided pre-compiled HEX code suitable for the PIC16F628 (I'm using a PIC16F628A without any problems) Code is also supplied for the PIC16F84. The layout is very simple and keeps good time - gaining only a few seconds after a couple of weeks running.  The first photo shows the complete clock (two surface mount capacitors are mounted under the board, as well as the two 10k pull-down resistors from pins 6 & 7). 

Read more: 7 Segment Digital Clock

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Category: Electronics

I have just received my 'Core' laser by Wicked Lasers .  Purchased though laserpointer.com for a very reasonable price, I am very impressed!  It's very green and very cool!

Core Laser 

Read more: Wicked "Core" Laser (Oooh! GREEN!)

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Category: Electronics

Just how big does a clock have to be to be a GIANT clock?

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The Unofficial Registry of Giant Digital Clocks has that answered.  Go - check it out :)

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Category: Electronics
This is a multi chip LED - in fact, there are 4 die cubes on the end of this baby.  They were supplied with little diffusing lenses (not shown) - again I would think that they pre-date high brightness LEDs.
 
They look a litte different to the average LED, with round pins and a formed plastic base, as opposed to the regular stamped legs with the moulded base of a standard LED.  Looking into the end of the LED, you can clearly see the structure of the element.
 
Here I have two LEDs running - you can clearly see the fine wire running from die to die within the body of the LED.  These are running at about 12ma and have a very warm red/orage colour.
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Category: Electronics

Some time before high-brightness LEDs were around, Toshiba tried to make a brighter-than-the-average-LED by putting in 2 LEDs in one. 

Looking into the end of the LED, you can see the two die cubes, and this is what they look like when they're on, running at about 17ma - the LED glows a pale yellow colour.
 
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  1. Weird LEDs - 1

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