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

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3
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2answers
165 views

Material that can be used as a switch for an LED

I am currently working on a project that turns on a simple LED. However, instead of flipping a switch, I want a material that can be touched that will act as the switch. Below is an image that is ...
-2
votes
1answer
71 views

How to configure touchscreen for taking input and displaying output

I am making a control system project for factories where the motors and other appliances are supposed to be controlled via touchscreen. Is there a separate software in which the screen buttons has to ...
1
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0answers
39 views

Setup gpio 23 as shutdown & startup

Followed this tutorial & have included my device tree config below. I've configured my pull up resistor for my button to function properly once my app is running, but I'm curious; is there a way ...
5
votes
0answers
194 views

How to write device tree overlay for analog device touchscreen ad7879 i2c

I wrote a device tree overlay for driver ad7879-i2c touchscreen (compiled as module using Raspberry Pi source, files: ad7879-i2c.c, ad7879.c). Driver gets loaded but i guess parameters are not passed ...
3
votes
0answers
43 views

Adafruit Retrogame library will not send character press events

I'm trying to build a small arcade cabinet powered by the Raspberry Pi 2. I've got several arcade buttons (for ABXY, Insert Coin/Select and Start) and an 8-way joystick. I'm following the tutorial ...
1
vote
0answers
31 views

Unable to get arcade controls passed as keystrokes to PiPlay

I'm pretty new to the Raspberry Pi and I'm trying to get arcade controls I've made working with PiPlay using the Adafruit software. I've tested the controls with a little Python 3 program I wrote and ...
0
votes
2answers
45 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 ...
0
votes
1answer
41 views

Storing data from input pins

I have a RPi and attached to an input pin I have an ADC (MCP3002) and an op-amp (MCP601) and a piezo element connected to them. The RPi reads the input pin, gets the digital data and at the moment ...
1
vote
1answer
122 views

Toggle on/off with a push button (WiiMote)

I want to make a on/off signal with only a push button, exually its for my WiiMote but I dont think that that makes a difference. I want a led to turn it on ans off. I was thinking about a counter ...
0
votes
1answer
38 views

Can I use 2 microphones with pi? & receive those two input-signals respectively?

Can I use 2 microphones with pi? & receive those two input-signals respectively?I want to receive two sound signals respectively in raspberry pi. In this case, just plug in two usb-microphones and ...
1
vote
2answers
220 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 ...
0
votes
2answers
360 views

Grab HDMI/VGA in video feed

I have a VGA/HDMI video feed that I need to input into the Pi and stream to a server, but I don't know how to input the feed and once it is input, how to grab it and send it to ffmpeg to compress it ...
0
votes
0answers
78 views

Capture keypress from ssh process

I have a keyboard (or MakeyMakey) attached to my pi. I'm using ssh to execute Node.js code on the pi. I'd like to be able to capture the keypress events. I found a couple of node modules that do this ...
1
vote
0answers
30 views

Problem with hardware on raspberry A+ [closed]

i have a uncomond issue... first of all, is not the hardware i guess, because, with code, i can turn on/off the leds... connecting a buttons and setting inputs is when i have a trouble... for example ...
2
votes
0answers
1k 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 ...
1
vote
0answers
45 views

USB soundcard putting out voltage through mic input [closed]

I don't know if it's a specific raspberry pi problem, but I'm trying to use a usb soundcard for mic input. I'm trying to use monitord to receive and decode messages used by fire departments / ...
0
votes
0answers
111 views

IRW does not show any thing

I want to use an infrared remote control. I'm using an infrared diode tsop38238. first I disabled the device tree because mode2 did not work at the beginning. After disabling I recorded my remote ...
0
votes
0answers
24 views

Single kit of Raspberry + input device + case ? (or single box w touch screen)

I have an app that works great on the pi, but I need a dozen of these boxes and don't want to deal w hardware. Is there a single kit that gives me a pi-2 + keypad + case, or pi-2 + touchscreen + ...
0
votes
0answers
212 views

wheezy: scanbd recognizing buttons but not triggering scan

I’m running a Raspberry PI B+ Raspbian GNU/Linux 7 (wheezy) Linux raspberrypi 3.18.7+ #755 PREEMPT Thu Feb 12 17:14:31 GMT 2015 armv6l GNU/Linux I've only just discovered both SANE and scanbd I’ve ...
1
vote
0answers
33 views

Fire event on HDMI connection

I want to run a script when an HDMI cable is connected, how would I do this? I found a couple links about how to do it generally in Ubuntu but nothing was working. ...
1
vote
0answers
42 views

Input device to enter a number between 0 and 99?

I would like to have some sort of input device where a user can input a number between 0 and 99. I'm envisioning something similar to a thermostat, where the user pushes the up or down arrow button ...
0
votes
2answers
95 views

what would be the simplest way of reading about 50+ gpio inputs?(momentary buttons)

Just need the 1/0 (pushed or not) entry. It's for a bigger projects so its gonna have a few outputs as well(not as many though).
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0answers
171 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 ...
1
vote
0answers
157 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 ...
13
votes
1answer
23k views

USB card as my default Audio Device

I purchased a small USB sound card. My Pi recognizes the device: $ lsusb Bus 001 Device 004: ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller If I run alsamixer and set the audio to ...
0
votes
3answers
359 views

Connecting multiple light sensors to one port

Is it possible to connect multiple light sensors to one port and similiarly control multiple motors through one port only? (I've tried searching for answers on Google, couldn't find a convincing ...
0
votes
1answer
169 views

Raspberry pi as CAMAC controller

Has anyone ever tried using raspberry pi as a digital input/output card for high frequency (more than 100 MHz) digital signal? I am thinking about building a CAMAC controller, the interface to PC (I ...
2
votes
1answer
481 views

Arcade buttons on GPIO, multiple buttons on the same ground pin

I have noticed that while hooking up arcade buttons to the GPIO set on the model b board that along with the joystick I should be able (by assigning certain GPIO pins to ground) to connect 7 other ...
4
votes
2answers
892 views

5V sensor to Raspberry PI

If I have a sensor which has 5V ouptut: I can't plug it directly to Raspberry PI, right? If so, what would I need to do so I would be able to do so? I would like to connect it via input pins.
0
votes
1answer
2k views

Reading /dev/usb/hiddev0 file generated by thermocouple board

I recently purchased a TMPSNSRD-TCPL1 thermocouple reference design from Microchip. When I plug it into the RPI with the USB cable, it generates a character device file /dev/usb/biddev0. I have been ...
29
votes
7answers
20k 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 ...
3
votes
1answer
338 views

Logitech K700 keyboard doesn't show up in /dev/input

With the Logitech K700 keyboard/mouse device plugged in to the raspberry pi, if I check /dev/input/by-path only a mouse shows up. I can still type in the terminal, but the keyboard device doesn't seem ...
0
votes
1answer
956 views

How do I change the default permissions for device files (e.g. a gamepad)?

I have a gamepad that I am interested in using with the Pi. When I plug it into my development laptop running Lubuntu 13.04, I get the following: 418476 crw-rw-r--+ 1 root root 13, 0 Oct 12 22:55 ...
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vote
1answer
729 views

GPIO input shorted to ground or 3.3v

I would like to try adding buttons and maybe a optical transistor (for IR) to my Pi. I've read several places advising the use of a 1k resistor as a buffer, but is that needed or would the input pin ...
5
votes
3answers
12k 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 ...
1
vote
1answer
295 views

USB microphone locks up - how to fix?

The USB microphone occasionally gets locked up such that nothing can use it. The utility arecord describes it as follows: card 1: Device [DYNEX USB MIC Device], device 0:USB Audio [USB Audio] ...
1
vote
1answer
1k views

Performance problems with xboxdrv

I wanna use the RPi as an emulation machine, thanks to RetroPie this is not a big problem. To control everything I want to connect multiple Xbox 360 wireless gamepads. This is possible by using ...
4
votes
1answer
7k views

Using an Android phone or tablet as a keyboard or mouse

There are many remote apps to let Android devices control XBMC installations. Is there anything that would act as a generic keyboard or mouse, to allow an Android phone to control Raspbian, ...
1
vote
0answers
168 views

Documentation for SPI driver [closed]

Ive found a lot of infomation on how to enable the SPI device on my raspberry pi, and a bit on how to use certain libraries for python, but im missing something on how to actually use the SPI driver ...
1
vote
1answer
164 views

5-Bit to 32 Port Microcontrollers

Are there any 5-bit to 32 Port Chips, that would operate: Converting from 5-bit: inputs: 5 bit address 1 bit value 1 bit clock outputs: 32x 1 bit value (outputs toggled) Converting to ...
6
votes
5answers
10k 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 ...
1
vote
1answer
2k views

Is it possible to record an RCA signal with the Raspberry Pi?

Does anybody know of a way to record the RCA video output from a security camera with the Raspberry pi? I know that the Raspberry Pi has an RCA output, but this won't work for recording. Would an RCA ...
2
votes
1answer
177 views

How to connect Pi to a homemade board, and communicate with it?

I'd like to make a small "MCU" consisting of a camera, a mic, some LEDs, and probably a cheap ARM CPU. I'm calling this my "SMIC" (streaming media IC). I'd like to connect this SMIC MCU to a ...
2
votes
1answer
1k views

Is there any way to use a joystick as a mouse?

In order to cut down on connected devices, is there any way to use a connected USB gamepad as a mouse? Bonus points to anyone who can make it also act as the keyboard. As a clarification, the ...
22
votes
4answers
10k views

What qualities should I look for in a small, 7“ or 10” monitor?

Hi, which small small and portable monitors would you suggest to combine with Raspberry Pi. As Raspberry Pi is part of huge range of different project please suggest which would be best in each of ...
10
votes
2answers
3k views

Why are there delays and input issues when using my wireless keyboard?

I booted up my Raspberry Pi for the first time and I plugged in my USB dongle for my wireless keyboard and mouse. It booted up fine but when I type keys either don't appear on the screen or they ...
3
votes
0answers
89 views

Connecting a touch panel display to the Raspberry Pi? [duplicate]

Possible Duplicate: How can I determine if a given touchscreen is compatible? I have two choices of touch panel display to connect to my Raspberry Pi: Reach Technologies SLCD43 Amulet ...
23
votes
3answers
54k views

Simple Keyboard Configuration

My USB keyboard was configured slightly wrong. So far I have only tried it with the Debian image. Certain keys were not in the right place (such as the '~' character). I know how to change the ...
34
votes
4answers
10k 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, ...