Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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1500 questions
47
votes
6 answers

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, whether a touchscreen is compatible to the…
Till B
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2 answers

Is setting `max_usb_current=1` to give more power to USB devices a bad idea?

I've been searching around for more information on the /boot/config.txt configuration directive max_usb_current, trying to find out exactly what happens when that is set to 1, but it's hard to find any official documentation. I know the…
geerlingguy
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4 answers

Is there a Linux From Scratch (LFS) ARM equivalent

I'd like to demonstrate how it's possible to 'bootstrap' up from a near-bare installation of Linux to something useful and productive. The Tiny Core and LFS projects demonstrate this well. However they are specific images for x86 based systems Is…
popey
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47
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12 answers

What causes ENOSPC error when using the Raspberry Pi camera module?

I have been getting the error message below when attempting to use the Raspberry Pi camera # raspistill -o /tmp/gate_now.jpg mmal: mmal_vc_component_enable: failed to enable component: ENOSPC mmal: camera component couldn't be enabled mmal: main:…
TomG
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47
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4 answers

Boot from external USB stick / drive?

I know it's not possible to directly boot from an external USB stick / drive, but instead you have to boot from the SD card and then the external device can take over. What's the easiest and preferred way to set this up, therefore boot from SD card…
me.at.coding
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46
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3 answers

How to set WiFi network priority?

I understand that I can set up multiple WiFis by adding to /etc/wpa_supplicant/wpa_supplicant.conf (as prescribed in Setting WiFi Up Via The Command Line). Let's say I have two WiFis registered: wifi_A and wifi_B When I unplug router wifi_A, and…
user2926577
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46
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6 answers

Can I install Android?

Is there an Android port for the Raspberry Pi, and if so, where can I find out more about it?
Darren Wilkinson
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46
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6 answers

How do I measure the current power consumption?

Is it possible to measure (with software, like PowerTOP) the Pi's current power consumption, on my Raspberry Pi?
cupakob
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46
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1 answer

"connect: Network is unreachable" on a working (connected) wlan0 interface

I finally managed to make wlan0 (an Edimax EW-7811Un USB WiFi dongle) connect to my router, but after an apt-get update I discovered that my Raspberry can't connect outside the local network. The Raspberry is running on the latest (as of writing…
Błażej Michalik
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46
votes
6 answers

How to measure temperature?

What can I connect to the RPi to measure temperature? I think devices connected to the I²C or SPI would make most sense. Here is a question about DHT-22 and other 1-wire devices. But at this stage it seems that 1-wire is difficult on the RPi due to…
John La Rooy
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45
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6 answers

Is there a GPU accelerated Xorg server?

At present all of the official builds of the X Window System run on the CPU, which takes up a lot of processing power and runs X rather slowly. I know there's no official GPU accelerated version of X11 yet, at least not from X.org, but has anyone…
berry120
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45
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2 answers

How to set my Raspberry Pi to boot into the GUI?

As from my previous question, I asked what the power off button in the corner does. Then somebody said if you boot into the GUI automatically, it will give you some options. How do I boot into the GUI at startup?
horIzoN
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45
votes
6 answers

How can I keep my Raspbian "Wheezy" up to date?

Is there a sort of update tool for my Raspbian Debian 7 (Wheezy) package? I installed php and lighttpd, and I want to keep those automatically updated for when bugs are found.
Michel
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45
votes
3 answers

How can I tell if I am using the hard-float or the soft-float version of Debian/Raspbian?

Let's assume that I am dropped into a room with a Raspberry Pi running either Debian or Raspbian. How do I find out if it has hard float support or if it is just using soft float?
fouric
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45
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5 answers

How can I keep system time?

I know that Raspberry Pi does not come with a system clock to save money. How can I keep system time though?
user46
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