Music Controlled LEDs
41859
Frequency Detection Circuit Design
127157
How to make a light emitting material sensitive to external light
31944
How do I model an LED with SPICE?
152666
Coin cell to power a 5mm UV LED?
113694
Playing an arbitrary tone with Android
151478
Calculating resistor for LEDs with different Forward Voltages in series
17781
Why do my LED lights stay on, even when the switch is off?
92681
Controlling Two Circuits with One Switch
140532
LED as power generator
114843
Alternative to inductor on IC
97602
How to make an object emit light in Cycles?
158797
accounting for LED resistance
122522
Interfacing switch and LED
131104
What component to use for audio signal switching?
14112
Why would one drive LEDs with a common emitter?
144667
How do LED light bulbs work?
151190
Line level voltage to drive LED display