You can see the glow worm in this dailymotion video: http://www.dailymotion.com/video/xxxmaz_electronic-glow-worm_tech?search_algo=2#.UTQSyqL5NFs
You will need:
- colour changing LED,
- 9 V battery harness,
- 9 V battery,
- 680 ohm resistor,
- electrical insulation tape,
Step 1: Assemble the Circuit
The longer terminal of the LED, the anode is connected to the resistor, the positive terminal side. The shorter terminal, the cathode is connected to negative terminal of the battery.
In the PSpice software circuit drawing shown the three diodes are used to model one LED. This software does not have a LED component drawing in it. Thus diodes are used instead.
Step 2: Bend the LED Legs
Step 3: Apply Insulation Tape
Step 4: Make the Glow Worm From Plasticine
In the other photos you can see the glow worm LED changing colour from red to green and then to blue before repeating the cycle.
Watch the video again: http://www.dailymotion.com/video/xxxmaz_electronic-glow-worm_tech?search_algo=2#.UTQSyqL5NFs