Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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1500 questions
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Why do I have so many RAM disks?

I have Arch Linux running on my Raspberry Pi 2. Right after install, I ran lsblk, fdisk and df commands (unfortunately I did not save the output) but I had one disk, which is the SD card and two partitions on it. Then, I upgraded the system with…
ruslaniv
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Can I backup my SD card with Disk Utility on OSX?

I see a lot of backup instructions like this: How do I backup my Raspberry Pi? ...involving the command line in OSX. But can't I just use the OSX "Disk Utility" to create a "New Image" from the partition on my SD card? Is that not a recoverable…
pinhead
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What is the difference between Model B+ v1.2 and Model 2B v1.1

I have read a few threads and a wiki page, but I am still getting confused. Until now I have used RPi Model B+ v1.2 and since it has 40 GPIOs, 4x USB and stuff, I supposed it is the RPi 2. Today I have received RPi 2 Model B v1.1 for my new…
Filip Čížek
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Is the Raspberry Pi a good teaching tool for students learning assembler?

When I took an assembler course, we used a NIOS II Altera board which had a display, some LED lights and programmable buttons. One of the more useful exercises was to write a binary calculator using the LEDs' and the buttons. So, here's my…
keyser
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7 answers

What's the smallest wifi connector for the Raspberry Pi Zero?

I'm looking for a small and neat solution to give the Pi Zero Wi-Fi connectivity. Something along the lines of a Micro-B USB dongle would be nice, but I'm not sure they exist. I'm currently using an OTG adapter plus standard type A dongle and the…
stovroz
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5 answers

Enable num-lock at boot Raspberry Pi

I am trying to toggle num-lock on my Raspberry Pi 2 running Raspbian jessie, I need it to run during the initial CLI boot up (before login: or startx), I have tried numlockx and setleds but none work until logged in. I already have a…
absenthecon
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3 answers

prevent pi from turning tv on

I have a Pi (with Raspbmc installed on it) connected to an LG TV. I disabled the CEC options in XBMC related to turning the TV on/off. However, the Pi keeps turning the TV on when rebooting. I can confirm it's the Pi and not XBMC as the TV comes on…
Mircea
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Enable monitoring mode for RTL8188CUS via USB on Raspbian

I am trying to enable monitoring mode for a USB wifi dongle with the RTL8188CUS chipset on a raspberry pi model b+ (or any raspberry pi for that matter). $ lsusb Bus 001 Device 005: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN…
Matt M
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3 answers

Shutdown Raspberry over ssh

to Shutdown my Raspberry I type sudo shutdown -h -P now this works fine when I am directly contected via USB Keyboard and Hdmi display but when Iam connected over SHH from my windows Pc using Putty it does not shutdown. It looks like this…
Zion
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2 answers

How to make the Raspberry Pi consume less power

What methods can be used to reduce the amount of power a Raspberry Pi uses?
Darth Vader
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Add more than 2 SPI slaves

As what I see on the scheme, there are 2 channels for slaves - CS0 and CS1. Does it mean that I can only connect 2 chips, like MCP3008 or something? Or can I attach more slaves to these 2 attached slaves. Does Raspberry scheme have support or…
Sergei Basharov
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2 answers

Where is the Raspberry Pi 512 MB memory located on the board?

Is the Raspberry Pi RAM located inside the Broadcom SoC or outside of it? If it's located outside, what's the peripheral responsible for accessing this memory?
Lkaf Temravet
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Raspberry pi always stops responding to SSH after some hours powered

I've had this problem with all my raspberry pi's: they simply stop responding to SSH, VNC and other things, after some time. When this happens, I go to my router configuraton page and I can see the raspberry pi is connected. Then, when I restart the…
Guelando
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5 answers

How can I wire this SD card reader to RaspberryPi?

I need to add a second SD card reader to my Raspberry Pi for the project www.samplerbox.org (the RPi will be embedded in a box, so I need a user-SD-card reader). Here is what I would like to use (it is a very common electronic part): How to wire…
Basj
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6 answers

How can I quit omxplayer in full screen?

I wanted to play video file by doubling click on it by using omxplyaer. First time, I double-clicked on it, it asks me to choose an application to open the file. Since I cannot find omxplayer in installed application tab, I choose Custome Command…
Zip
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