Best way to switch between multiple power rails based on whether they're present or not
102576
Switch between battery and USB power
118410
How can I replace a 4-way mechanical switch with occupancy sensor(s)?
43687
How to write a switch statement in Ruby
31576
How do I switch between virtual terminals in a guest system?
90285
Determine if wire in switch box is safe to re-purpose?
128051
Calculating possible option of switching pairs in group
6152
Automatically switching from 9V battery to DC wall adapter on insertion
72043
Automatic switching between external 5V and USB bus power supplies
28609
How to switch 7 wires with a single on/off slide switch
59838
Automatic switch using LDR
3449
Is there any benefit to this switch / pattern matching idea?
155159
Switches needed in an n-location multiway switching system
92681
Controlling Two Circuits with One Switch
128497
Implement MicroController Power Switch and re-use the button for other features
95587
How can I safely prototype a mains power circuit?
57802
Is it good practice to parallel relay contacts for increased current capacity?
124069
How do I convert a light circuit with a single pole switch to use two 3-way switches?