Function that toggle LED on and off
3743
How do you set, clear, and toggle a single bit?
5863
Control LED using usb to parallel converter
101419
Is there any way to make a hotkey turn the screen off?
113225
LED bulb still emits light when turned off
17263
How to drive 128 LEDs
144618
How to control LightDM power saving preferences?
140532
LED as power generator
60465
How to turn off monitor by hotkeys?
30624
Automatically switching from battery to DC wall adapter on insertion
73289
How to implement a switch in spice?
92681
Controlling Two Circuits with One Switch
36312
Changing the resistor to be in front or behind an LED doesn't affect brightness?
114010
How can I schedule timer to power on and off device?
118920
A switch that is only ON if the reference voltage is matched -+ 0.1 volts
28609
How to switch 7 wires with a single on/off slide switch
117910
How to drive multiple LEDs from a Li-ion battery (with varying voltage)?
74151
Changing LED color for notifications