[Title]  [text TOC]  [image TOC]  [Site Search]    [Donation] 

     
Contact me for information on kits

You can also find at BG Micro a single-pole, double-throw sub-mini toggle. This is a three-position toggle switch with a 1/4" base. The middle position is off, one position turns on the white LED, and the other position turns on the red LED. The red LED is used at night when you don't want to ruin your night vision (as when viewing stars or meteors).

You will need to poke two more holes in the lid for the second LED, but otherwise assembly is similar. The value of each resistor is calculated separately but in the same way as in the single LED example.

Ready for more fun with LEDs? Try these out:

• NEW and IMPROVED LED flashlight Junior
• One LED Flashlight
• Two white LEDs
• Four white LEDs
• One or four white LEDs
• LED Headlamp
• Improved One or Six White LED Headlamp
• Simple One or Two White LED Headlamp
• Other Experiments
• Converting Flashlights to use LEDs
• Black Light LED Flashlight