Questions tagged [switches]

Use this in reference to hardware devices which are used to connect networked devices together. Switches are distinct from hubs because they direct traffic only to the intended port instead of just replicating all traffic on all ports. They are used to reduce network contention.

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Using Pi to control a button on a HDMI switcher

I've been reading about how to use the GPIO to toggle a button on a thing I've taken apart. It's like this: Amazon I watched a video of a guy using an opto-coupler, what are the basics here? I'm ...
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3answers
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How can I add an On-Off switch to my Raspberry Pi 2

I want to add a on/off switch to my pi 2 to correctly shut the pi down This is the switch I want to add: Edit: moved from a link to be included below: This guy in a Raspberry Pi kik group made this ...
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3answers
3k views

External shutdown (properly) button?

I have a Raspberry Pi that I want to mount in an enclosure. The enclosure already has a couple external buttons on it. I'm trying to find some sort of circuit that I could by that I could wire the ...
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4answers
6k views

Home Automation, Mechanical Relays and Physical Switches

I am currently building and installing a home automation system. I have currently configured centralized audio system with ceiling mounted speakers in each room with a raspberry pi in each room. I ...
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6answers
17k views

Reed switch wiring

Working my way through a garage door project. I purchased a few of these but I'll be danged if I can find a consistent answer on how they're wired to a Rpi. My thought was just start hooking it up ...
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2answers
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How To Switch On/Off A Circuit using GPIO

I have a simple circuit that runs on 5 volts. Let's just say for simplicity that it is a circuit with an LED that lights up when a push button is pressed. The problem is that it has a push button ...
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2answers
1k views

POE Switch to Power the PI?

Sorry if this a repeated, I couldnt find anything similar. Most threads seems to be modifying the PI or splitting Ethernet. Will this setup work for powering the PI? 1) Juniper EC-2200 POE Switch (...
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1answer
1k views

Using a switch, not push button, to play mp3s

I'm trying to setup a switch on a breakout board which, upon flicking the switch, will allow me to play a short mp3, then loop a second mp3 until I switch it off. When I do so, I want it to play a ...
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1answer
1k views

Multiplexing 20 buttons into the RPi GPIO

I have 20 microswitches like this: How would you wire them to the RaspberryPi's GPIO, using multiplexing techniques? PS: here is a related discussion about multiplexing but it's theoritic and doesn'...
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1answer
47 views

Is a RC snubber required when using the pi with a relay?

I am hoping to use raspberry pi to switch on and off a heating lamp and an aquarium pump via a relay switch. Both devices are plugged into 120V AC normally. The relay tutorials online seem to be ...