Exciting kit electronically creates an exploding "Firework" like display. Kit features 17 micro red LEDs, 7 green mini LEDs and 1 jumbo red LED. The circuit uses a 2 transistor multi-vibrator that alternates between the "rings" of LEDs, which cause a display like "sky rocket" type fireworks. Great attention getter in a darkened room. Attractive and makes an interesting intermediate project. Size of board: 3.875" x 3". Operates from one 9V battery (not included).Complete with all parts, PC board and instructions. Skill Level 2.

This unique kit is sure to surprise all who see it! The kit shows a colorful Christmas Tree which has 3 white looking bulbs (actually LEDs). When a 9V battery (not included) is connected, the bulbs on the tree blink all red then all green and then back to red again. The effect is magic! Circuitry uses 4 transistors to produce this unique display and a color label which you glue to the PC board before you start assembling the kit. Size of PC board: 2-1/2" x 2-5/8". Complete with all parts, label, PC board and instructions. Skill Level 1.

Here is an exciting visual display! Three groups of 2 LEDs light up sequentially to provide a stunning RED display. Kit uses 6 jumbo LEDs and 3 transistors. Operates from one 9V battery (not included). Size of PC board is 2-7/8" x 15/16". Complete with all parts, PC board and instructions. This kit requires soldering of components to the PC board while building. With Red LEDs. Skill Level 2.