What type of switch would disconnect 3 separate lines? I just can't think of what it should be named.
If possible a suggestion of a specific item would be welcome.
Electronic – What type of switch would disconnect 3 separate lines
switches
Related Solutions
Electronic – the hardware/device that can switch a 5V and 12V (simultaneously) PC power supply lines
This 5 volt DPDT relay would work for your project
What a relay is and how to understand the part I linked to you
The abbreviations stand for
SPST – Single Pole Single Throw
SPDT – Single Pole Double Throw
DPST – Double Pole Single Throw
DPDT – Double Pole Double Throw
You need a common reference...
Your suspicion is correct, but you can fix it... just connect all the grounds together.
You may actually not need that complicated of a circuit. If you test the buttons in the controller(s), you will likely find that one side of the button-switch is already connected to ground. So all you have to do is short out the other side to ground and you are done.
Make sure that you are not driving the button when you do not intend to "press" it as this will create electrical contention and damage your output circuit.
In summary...
Connect the three grounds.
Determine if the controller buttons are grounded.
Connect your analog switch (or microcontroller GPIO output through a big resistor) to the other side of the button.
Ensure that you are switching from High-Z (GPIO in "input" mode) to Output Low (ground).
Best Answer
A triple pole switch would be what you are looking for in this case. You could also use a single-pole triple-throw switch. Just take a look at the picture below:
You can use only one line at the time which I am assuming is what you would want to do. Look for relays that are triple-throw if you want more information.
But if you look to disconnect three lines at the same time, you would need to look for a triple-pole single-throw type of device. Take a look at the one shown below:
This option would make more sense if you are trying to disconnect all the lines at the same time.