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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47 views

what switches am I describing here? [on hold]

background: putting a rPi in my vintage car, and wanting appropriate looking switches for my vintage. I have the matching key cap / knob caps for my dashboard, but now need to source the right ...
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32 views

I have a float switch, can I read GPIO and see if it's opened or closed?

It's something like this. It gives either High or Low when only when it is closing the circuit. Reading already closed circuit does not seem to work. If I connect to ground it always give LOW no ...
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2answers
48 views

Managing home lights - Controlling smart lights

My first project with my raspberry is how to control the home lights, all of them. What I want is to have the ability to turn on and off each individual light. I know using manual switches won't work, ...
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2answers
105 views

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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1answer
38 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 ...
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1answer
71 views

Connecting several (roughly 100) Buttons to the PI (USB?)

I havent found anything, but iam sure there is already info on the topic. So even just a link would be helpful for me. I want to build a Jukebox. So pretty simple. Around 30 Buttons, if Button is ...
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75 views

Control 12V motor from 3.3V GPIO with external 12V Power Supply

I have a 12V motor, which I need to control from my Raspberry Pi (through the RaspiRobot Board). However, the RaspiRobot Board gives me only 3.3V for the motor. At the same time, I have a 12V adapter ...
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66 views

L298N not working anymore

This is an image of how I had it routed up, it was working just fine until I attempted to add a rocker switch. I used the 2 pin on/off rocker switch that came with my smart car kit (https://www.ebay....
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I have been working with a pi 3 b+ and a PWR.A53.B power and driver board

I have been working with a pi 3 b+ and a PWR.A53.B power and driver board . Sadly the switch on the power board was damaged and fell of . I couldn’t put the switch together as I lost the small pieces ....
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2answers
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Raspberry Pi DHCP Server: clients not getting IP addresses

I am relatively new to networking, so please bear with me. For a purely educational project, I've set up a network where the Raspberry Pi 3 running Raspbian Stretch is to function both as a router and ...
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3answers
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Raspberry Pi 3 breadboard momentary switch not being recognized (using breakout T Cobbler)

Here is an image of what I've been trying to achieve, which is that when the momentary switch is being pressed, it'll print out "Button Pressed" in Python using a little script. The problem is that ...
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27 views

raspberry multiple magnetix switches

I have a Pi 2 and I would like to monitor the state of 3 magnetic switches. All of them are in close distance, no more than 3m of cabling for each one of them. How can I connect them to monitor their ...
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3answers
507 views

Turn on and off 5V to 12V Relay

I want to use my Raspberry Pi to turn on and off a 12V current for a certain amount of time. I've read a lot on this forum and I've understood that the 5V GPIO Pin is... Not GPIO, meaning that I ...
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2answers
106 views

Is there a way to control the power output from raspberry pi3?

I'm new to electronics and I'm thinking of building a small racing car. I have this toy car that has a DC motor and a servo motor to control the direction of the car. My plan is to write some software ...
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2answers
150 views

Raspberry PI Relay power motor [closed]

Does anyone happen to have a similar example for a python code when pressing a button a relay is turned on which is powering a motor to open a gate for 5 seconds and then closes by giving a signal to ...
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1answer
183 views

Compatible POE switches for PXE?

It seems that my Raspberry PI 3B is very picky about which switches it works with when booting using PXE. When I connect the PI to my regular non-POE switch, PXE boot works fine. When I connect it to ...
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1answer
30 views

Can I use bell switch with Raspberry Pi?

I'm building a thing and I wanna use some nice looking buttons in it. I found some bell switches like this that look pretty nice. The question is, do these work like normal switches with my Raspberry ...
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1answer
183 views

GPIO switch interrupts work just once?

i have this strange problem with interrupts. I use GPIO switches to change a variable that defines what my code is doing. As soon as one of those interrupts worked once, none of them workes anymore. ...
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1answer
152 views

Wiring a SNES Controller to pi3 gpio or tactile switches

I'm looking to build a super pi boy, in the original they use tactile switches. However, I'm not sure how to wire the tactile switches and make them work as a x b y up down left right etc. I'm also ...
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1answer
124 views

Physical Computing - making a switch

I am following the physical computing with python tutorial from here: https://projects.raspberrypi.org/en/projects/physical-computing I have created a python file that contains the following: from ...
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2answers
52 views

Validate your circuit [closed]

I'm a newbie to raspberry pi build a small circuit using a switch and capturing the input of the switch if I press it. After the circuit been designed I dont't its working as expected. Is there a way ...
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5answers
7k views

Controlling Switches from both Raspberry Pi relay & Manual [Home Automation]

I am currently working on Home Automation Project with Raspberry Pi, I am using 8 channel relay board for this, I can control switches over relay easily. But I want to operate them with pre-existing ...
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1answer
984 views

Switch on an ATX power supply with Raspberry Pi 3B (ATX no for Raspberry Pi power supply)

My advice request is regarding an arcade machine. Now I have it running with a Dell desktop. However I want to switch to Raspberry Pi as I'm tired of managing all the emulators and realized that using ...
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3answers
665 views

1-Wire Button or switch?

For an application I am currently developing, I need to be able to get the status of a button (pressed or not pressed) or a switch (which can be considered a button in some way). While I could ...
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1answer
181 views

Turning on-off-on-off switches to normal switches and integrating with GPIO [closed]

I have the following on-off-on-off button that I purchased from Adafruit for use with my Raspberry Pi 1 Model A. I'm trying to "bypass" the "on-off-on-off" functionality, and just make it so that its ...
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1answer
793 views

Ip switch by Raspberry Pi

I have an interesting question for you. I search several stack forum to find an answer but I could not able to find anything completely related. I have a rpi and I am using this device as sensor data ...
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1answer
356 views

Toggle Switch Help

I'm trying to connect this Toggle Switch to my Pi But I can't seem to get any input off it, It's connected to a GPIO pin and ground like I've done with Push Buttons in the past but it just doesn't ...
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0answers
16 views

How to monitor the available bandwith without impacting an already running stream?

I have a RTP stream called 'X1' running from a Pi to a Linux PC. At the same time I want to create more streams, for example X2, X3 e.t.c... Depending on the available bandwidth, I would like to ...
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1answer
365 views

Reed switch 3m away using a telephone cable (AWG 28) [closed]

I am a software engineer so my electrical engineering skills are very lacking. I have 6 questions total in this jumble of text that I am trying to solve. If there are general concepts of EE that I ...
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1answer
545 views

Raspberry Pi - Press for on / Press for off switch

I've begun tinkering with using electronics and am also new to using Python. I was wondering if someone could help me please? What I'm trying to achieve is to use an on/off switch to run a motor - ...
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2answers
151 views

Traditional Light Switch Triggered by RPi?

Does anyone know of a light switch which can be controlled using the RPi and also manually. Assuming that the RPi sends a signal thru a relay which connects to the light switch. The switch will turn ...
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1answer
587 views

GPIO pins available for switches

Among all the 40 GPIO pins, how many of them are available to connect a switch for on-off information? I counted more than 24 GPIO_* connections here, but are they all available via Python? import ...
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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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2answers
390 views

How to Know a light turned ON by physical switches or through raspberry pi

I'm Working for Home Automation system through raspberry pi, I'm turn on/off lights and A/C through Raspberry pi(build application of web, to control lights/AC) either case AC switched on with ...
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1answer
262 views

Xiaomi MiKey in 3.5mm port

I have bought a Xiaomi MiKey which enables me to trigger events with my mobile phone. It is a 3.5mm jack with a button, you can configure the button to do whatever you want with an app or you can ...
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1answer
143 views

Aten US424 USB switch and Raspberry Pi 3

I bought a USB switch, an Aten US424. It works perfectly on every computer but not on my Raspberry Pi 3 with Retropie. How can I solve or at least troubleshoot the issue?
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4answers
2k views

How do pull-down resistors work?

I am using the BCM-notation for the nodes of the GPIO. Consider the following situation. node 1 (3,3V) is connected to a switch-key the switch-key is connected to node 25 via 1 kOhm node 25 works as ...
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1answer
5k views

Wiring a 3 pin toggle switch to Raspberry Pi 3

I have this small 3 pin toggle switch - just toggles left and right - it has its three pins aligned left, center and right. No datasheet for it - not sure where it came from - most likely a starter ...
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2answers
868 views

Toggle Switch for Flight Simulator

I want to built a custom 5 toggle switch controller for my flight simulator that is running on my Windows 7 pc. I have some programming experience but I am not sure where to start. Basically I would ...
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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
590 views

Physical on off switch to digital

I have a raspberry pi 2 model b and I am trying to build a digital on of switch, which means that I would like to get rid of this physical one ( Currently it controls a police type flashing light) ...
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1answer
1k views

Using a relay to bypass a button

I'm using a relay to bypass a button thats connected to a Raspberry Pi. Code works fine, relay switches fine, and if I connect the 2 wires that bypass the remote it works fine too. I cannot figure ...
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2answers
11k views

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
863 views

Air pressure switch for balloon

For a demo that I want to prepare I need a pressure switch (pressure sensor) that regulate the pressure inside the balloon. The schema is the following: balloon inflated by an air compressor, ...
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3answers
2k views

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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1answer
635 views

How can I send the same PWM output to multiple connections?

For a update to a small robot I am doing, I am controlling a robot using the Pi. This works very well but I would like to add more precise control, using PWM on the H bridge that controls the motors, ...
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1answer
407 views

Understanding how to wire a component to a pi, COM-00097 Switch

I'm new to stackexchange and also to the pi. And i'm trying my first project. I was wondering how to wire three of these COM-00097 Switches to a Raspberry pi to make it output a different message when ...
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2answers
676 views

Number of maximum inputs i can get on a Raspberry pi

I'm relatively new to the rasperry pi but not so to Python programming. So i'm mostly new to the electronics side of the story. I'm looking to build a bass midi controller. My idea was to have one ...
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0answers
2k views

Can I use I2C to connect multiple Arduinos with Wireless Connection

I am very new to stackoverflow and new to using raspberry pi and am in the process of learning how to use it properly. I am currently working with a partner on a project that requires a wireless ...
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1answer
778 views

Help with a python script using pull up resistors and long presses of momentary switches

What I'm trying to achieve is to use GPIO pin 5 (BCM) on my raspberry pi b+ to receive input from a momentary switch and in response take specified actions. The actions will differ based on how long ...