Questions tagged [input-device]

An input device is any peripheral that provides input to a computer, such as mice and keyboards.

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30 views

Waveshare 7'' LCD conflicts with WIFI (hostapd)

I have bought a Waveshare 7'' LCD (C) (https://www.waveshare.com/7inch-HDMI-LCD-C.htm) and it seems to work correctly on Raspberry PI 3B+ following the instructions on the site (it doesn't require ...
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1answer
201 views

I'm wanting to get user input from a screen, but I can't have any buttons

I'm developing an python3 application that only uses a handheld scanner for input. I need to prompt the user for input and want to use a nice window to do it. When I look at tkinter, it appears that ...
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1answer
569 views

GPIO Voltage tolerance for input

I have not been able to find the input tolerance on I/O pins, especially on the Input pins. If I apply a voltage 3.6v (3.3v +0.3) on an input will it be dangerous or is it ok ? Does somebody have a ...
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7answers
41k views

Speech processing on the Raspberry Pi

I want to do speech processing on Raspberry Pi to detect specific people (something like unique identification). I would prefer to use only the on-board processor for this, you could assume that ...
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3answers
748 views

Coding a GUI in python and driving stepper motor by user input

I am hoping to use my Raspberry Pi 3 in a senior project for my mechancical engineering program. I want to use the pi to drive a vice like fixture to predetermined positions by connecting a stepper ...
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1answer
2k views

Use USB microphone as input, but keep internal sound card as output

I want to record void with an USB microphone on a Raspberry PI running Raspbian (Jessie). At the same time, I want to keep the audio output on the internal sound card. Similar questions on this site ...
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2answers
2k views

Adding microphone support to the RPi 3B

I own a Raspberry Pi 3B and want to extend the sound capabilities. So what I need is sound output for speakers and headphones via a 3.5mm phone jack. In addition to that, I want to add an internal mic ...
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1answer
89 views

USB Barcode Scanner Serial won't work just freezes/hangs

I am trying to build a basic POS System, naturally I would have a usb barcode scanner and a simple code from here to start. Everything went well from scanning using serial to DB entry and then GUI. ...
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2answers
782 views

Mulitple Input state changes/event detection

Picture 1 shows my setup. I connected the RPi3 Input parallel to an I/O terminal. The inputs are connected to a pull down resistor setup. Pictures 2 and 3 show the setup more in detail. Program-> ...
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1answer
1k views

Kivy: config.ini [Input] section: My touchscreen settings don't apply

I am trying to use an Elo Touch monitor to work with kivy. At first i calibrated the monitor with xCalibration wich worked fine: Calibrating EVDEV driver for "EloTouchSystems,Inc Elo TouchSystems ...
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4answers
942 views

Sound Processing using USB sound card and microphone

I want to use a microphone and get input from it to sample it in real time and I don't have a set idea about how to interface it to get the input. Any help will be appreciated.
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1answer
5k views

Touchscreen with Qt QML eglfs

The goal is to run QtQuick2 Qt5 applications on the RPI 2B with USB+HDMI resistive touchscreen (7" 800x480 AR1100 http://www.adafruit.com/products/2407). Current state Visual part is fine. Touch ...
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0answers
82 views

Custom camera driver

Is it possible to write a driver, say for a OV camera, based on the existing drivers at the RPI git repo? As is I understand, with a datasheet for a sensor it should be possible to write a similar ...
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0answers
168 views

Disable mouse acceleration on Raspbian Stretch

I can't figure out how to change the mouse acceleration setting such that the change is persistent. Changing the value in the Preferences > Keyboard and mouse settings keeps resetting every time I ...
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0answers
42 views

raspi MIDI in audio out

I have a MIDI controller keyboard, that I want to take with me to a vacation. For some reason I cannot bring a tablet/laptop with me. I still have a Raspberry Pi 2B lying around so I thought it might ...
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0answers
41 views

Do Rpi3 UART devices inherit their device ID from the on-board UART0 controller (GPIO pins 8 & 10)?

I am working on a device prototype which reads load cell data to an Arduino which sends the load cell data via (hardware, not USB) Serial to the Rpi3 running Win10 IoT. The communication link ...
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0answers
35 views

Creating device driver which feeds GPS Co-ordinates from phone to raspberry pi

I don't have GPS module, so I was thinking whether I can feed GPS coordinates from my android/ios phone to raspberry pi over wireless protocol like bluetooth/TCPIP. Can I create a virtual device ...
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0answers
60 views

Not receiving any data via Bluetooth connection

I'm trying to send data from a ps3 controller to my Raspberry Pi, but the code I'm using does not pick up any data sent from the controller. The controller is connected yet nothing happens when I ...
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0answers
109 views

RetroPie boots into terminal and won't accept input

I was making some changes to the file system to my Raspberry Pi 1 B+ using the terminal, deleting some unwanted files and when I rebooted the system, it now boots directly to the terminal (rather than ...
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0answers
430 views

Processing keystroke input on startup

I am currently working on a project where I am using a Raspberry Pi (running Raspian Wheezy) to handle authentication to a locked door. I have a usb numeric keyboard plugged into my pi, and I have ...
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0answers
110 views

Relay Bluetooth keyboard out as a USB keyboard

I have a bluetooth keyboard that's originally connected to my desktop PC. The problem is that I can't use it in BIOS or to select different boot options at grub because the bluetooth drivers aren't ...
2
votes
1answer
929 views

UART RX stops reading data after working correctly

I'm trying to read an continuous stream of data from my device (laser altimeter). The device is connected to the UART Rx pin of raspberry Pi 3B+. Everything works fine with this python code: import ...
2
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1answer
374 views

3.5" TFT Calibration Problem

I am struggling to understand what is going on with my (knock-off) Waveshare 3.5" TFT calibration. For my application, I need to have the display and the touch screen rotated 180 degrees. Flipping ...
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2answers
834 views

Toggle on/off with a push button (WiiMote)

I want to make a on/off signal with only a push button, actually its for my WiiMote but I don't think that that makes a difference. I want a led to turn it on and off. I was thinking about a counter ...
41
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6answers
13k views

How can I determine if a given touchscreen is compatible?

I want to attach a touchscreen to my Raspberry Pi. While doing some internet search about this, I found out that this is not trivial, because not all touchscreens are compatible. How do I find out, ...
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1answer
459 views

Real time Sound output over USB

I want to be able to record my guitar onto my Macbook pro. since my Macbook pro model doesn't have a sound input jack, i want to do it through USB using Raspberry Pi. There are many USB Audio ...
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1answer
789 views

Use different sound card for microphone vs audio output

I recently bought a USB sound card to improve the audio output on my pi while continuing to use my USB microphone for audio input. The problem is that I do not know how to configure the pi to use the ...
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2answers
31 views

Detecting multiple presses of the same button

I'd like to detect multiple presses of the same button and interpret that differently, for example "tap" means to do function A and "tap-tap" means to do function B. I've been doing some googling but ...
24
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4answers
101k views

Raspberry Pi 3 audio input?

Did Raspberry Pi 3 add audio input? I'm new to RPi and interested in doing speech recognition but noticed input has been missing for previous versions. If it hasn't, what is the best way for me to go ...
0
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1answer
2k views

Auvidea B102 and rpi3 B

Hello I want to buy the auvidea HDMI to CSI-2 bridge and I want to know if it will work with my RPI because the website is not very helpful EDIT From what I read it looks like I need to buy the b101 ...
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2answers
1k views

How to properly implement threading within a function toggled by a button [closed]

I need a little help if possible. I'm trying to make a threaded function which will make my LEDs blink randomly as long as the button is pushed. when it is released it should exit the function and ...
7
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4answers
19k views

Creating an HDMI Pass-Through Connection

I would be very interested to know if anyone on here might be able to provide some insights into the feasibility and/or proper approach to add a HDMI input to the Raspberry Pi in an effort to allow ...
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0answers
209 views

pyusb: scanner insufficient permissions

UPDATE: I added a symbolic link to my .rules file and it is being created every time I unplug/plug the scanner. I believe my issue is more of a permissions issue with my Python code and more ...
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0answers
160 views

Bluetooth as a virtual audio device (input)

I am trying to setup this audio-reactive-led-strip library but with Bluetooth audio as the input. I have so far, got my LED strip to work with the standard strandtest.py and have also successfully ...
2
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1answer
1k views

Real time audio input for use in Python program

I am working on some audio manipulation with my RPI and have a question on how I should process the signals. Right now I have a USB adapter with an Audio In and an Audio Out. What I would like to do, ...
1
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1answer
2k views

Raspberry PI 3 reading input value with push button

I am new to Raspberry PI. I am following button tutorial from adafruit site. I have the made the connection needed but when I execute the code the following part is not returning values as expected ...
1
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1answer
898 views

Taking input from a MyoWare muscle sensor with a Raspberry Pi Zero

Our robotics class is making a robotic hand that takes input from muscle sensors. We have a Raspberry Pi Zero and are trying to take muscle activity input from a MyoWare Muscle Sensor. The program we ...
2
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0answers
272 views

Numpad keys don't throw KeyEvents under JavaFX on RPi3 [closed]

While programming a JavaFX application for the Raspberry Pi 3 using the official JavaFXPorts from Gluon, I encountered the following problem: Pressing the numpad keys on my keyboard doesn't give me ...
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0answers
319 views

How to use remote with Kodi 17.6 in ArchLinux?

I want to use all buttons of my remote control picture. Mainly the volume and the keyboard when entering text. My system is Arch with Kodi 17.6 I assumed that the following post would fix it here. I ...
2
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1answer
70 views

Camera not in /dev/ how to create one

Does someone know if it's possible to create a new "/dev/video0" with some informations (e.g idVendor, idProduct, ...). Our problem is that when we plug in our camera, it doesn't create a "/dev/*" ...
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2answers
250 views

Are there any buzzers that work natively with 1 Model As?

I'm trying to follow the examples in this CanJam EduKit project -- see page 2: I'm having enormous difficulty tracking down a piezo/buzzer that I could use for that project, a buzzer that: Works "...
2
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2answers
5k views

Set up C-media USB soundcard for microphone input on Raspberry Pi 2 with Raspbian Jessie

I would like to use Amazon Alexa or Steven Hicksons Voicecommander (uses Google) on my Pi to automate some tasks by voice command, but I am having trouble getting the microphone to work in the first ...
2
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3answers
2k views

Disable or catch touch screen events

I have a RPi 2 set up as a kiosk with the official touch screen. On startup, the user will need to enter some input using the touch screen, but then I want to display an external web page in full ...
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2answers
10k views

PyAudio does not detect my microphone connected via USB audio adapter

I am using the latest Raspbian I just downloaded this morning. I bought this USB audio adapter, https://www.sossolutions.nl/usb-audio-adapter-works-with-raspberry-pi. And then I followed tutorial ...
1
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0answers
47 views

Workaround for unsupported keyboard

I have couple keyboards now sitting in the desk but somehow it refuse to work on raspi3 Jessie with pixel (genius kb100-holtek semiconductor and prolink usb keyboard) , both tried using powered usb ...
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2answers
2k views

Raspberry Pi USB microphone 1 Khz background noise interference

Using this microphone I have some severe noise in the background. The more peripherals I plug in (camera, gertboard, wi-fi adapter) the worse the noise becomes. We've tried several different power ...
12
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5answers
29k views

Forward mouse and keyboard input to X session

I'm accessing my Pi via SSH. My network is too slow to actually forward the Pi's desktop back to my laptop, so I have a monitor connected to my Pi. When I startx through Putty, I see the desktop on ...
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1answer
293 views

Connecting digital output device directly to pi's gpio

I recently purchased four of these SW-420 based vibration sensor modules, and am following along with this question: Python code for SW-420 vibration sensor. I am brand new to circuitry and want to ...
0
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1answer
518 views

Using user input from keyboard in UWA

I am working on an app in C# for Rpi 3 (running windows IoT Core). It will need to be able to get input from a keyboard (phisycal, not onscreen) and be able to put that input in a string so it can ...
6
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2answers
558 views

Wireless USB Touchpad not working as mouse. Why?

I have recently bought a Logitech T650 wireless USB touchpad. This touchpad works fine in the Raspbian desktop environment. But when I run some applications, this mouse doesn't work inside the ...