February 2009
Intermediate to advanced
192 pages
8h 28m
English
An LED, a feather, and a spring.
Create a little magic in your yard with this flickering garden lantern triggered by the wind, made with spare parts you probably have lying around your house.
1. Attach the LED to the battery.
Solder one of the LED’s leads to the battery holder (Figure 1). I got the battery holder for the flat 3V button cell battery from an old PC that I’ve been scavenging parts from. (It’s the battery that powers the internal clock, and I guess every PC has one.) You don’t need a battery holder at all — you could just tape one of the LED’s feet to the battery — but a battery holder makes things easier.
NOTE: Remember to test the LED first, so you know you’re attaching the correct ...