Comment on Energy-Harvesting Electronic Holiday Card 2024parentComments−taneq1yTuned spark gaps? Or just an antenna hooked up to a pair of back to back LEDs? Just recently I saw something about light-up fake fingernails that would blink when you got a 2G phone call.−ggm1yProbably the LED.
Comments
Tuned spark gaps? Or just an antenna hooked up to a pair of back to back LEDs? Just recently I saw something about light-up fake fingernails that would blink when you got a 2G phone call.
Probably the LED.