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1500 questions
65
votes
6 answers
How do I determine the current MHz?
I've been trying to get an accurate reading of my Raspberry Pi's MHz, since I overclocked it in /boot/config.txt
My /boot/config.txt is as following:
pi@raspbmc:~$ cat /boot/config.txt
arm_freq=900
gpu_freq=350
disable_overscan=1
List of things I…
Sjaak Trekhaak
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64
votes
9 answers
What password to use to log in after the first boot?
The first time I boot up my Raspberry Pi I get a login screen.
What username and password should I use? That is, what is the default password for Raspberry Pi?
Maria Zverina
- 5,168
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64
votes
9 answers
Is it possible to run real time software?
I know it runs Linux and there are real time patches available for Linux. Would those patches work?
Has anybody tried another real-time-os on the Raspberry Pi?
The idea is to use the board for regulation and control jobs that are time critical.
Lars Pötter
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64
votes
10 answers
How can the Raspberry Pi emulate a USB storage device?
USB storage devices, such as USB sticks and harddrives, are common to attach external storage to any kind of computer. How can the Raspberry Pi emulate an USB storage? The easiest application was to directly access the SD card via USB, but one…
Jakob
- 2,758
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- 22
63
votes
1 answer
What are the min/max voltage/current values the gpio pins can handle?
I want to start using the GPIO pins but I am worried about short circuits or using too much amperage and frying my raspi. What are the Min/Max Voltage and Current values rasppi can handle? What is the typical voltage and current? How sensitive is…
John
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62
votes
4 answers
How do I attach a GPS receiver?
I would like to hookup a GPS receiver to my Pi so that I can:
Get my geographical position
Synchronise clock when not connected to network
What are my options? Will any hardware supported by gpsd work with the Pi?
Maria Zverina
- 5,168
- 5
- 30
- 42
62
votes
8 answers
Will Raspbian move to 64-bit?
In this page, the official RPi3 announcement states:
You’ll need a recent NOOBS or Raspbian image from our downloads page. At launch, we are using the same 32-bit Raspbian userland that we use on other Raspberry Pi devices; over the next few months…
zundi
- 735
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61
votes
11 answers
How can I prevent my Pi's SD card from getting corrupted so often?
I get an I/O error at boot and then get this 'error':
(I am running the latest version of Raspbian)
Entering kdb (current=0xca82ac80, pid 1) due to keyboard entry
kdb> _
And I have seen it before, and was explained that my SD card got corrupted…
user151324
- 1,270
- 4
- 14
- 17
61
votes
7 answers
Can a simple cable convert HDMI output to VGA?
One may buy a simple HDMI-to-VGA cable, or an HDMI-to-DVI cable. Example: on Amazon. However, my vague knowledge is that these cables only work for video cards that have special support for this function. Does the Raspberry Pi support such…
AlanSE
- 745
- 1
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60
votes
5 answers
Why is the CPU sometimes referred to as BCM2708, sometimes BCM2835?
I've seen the System on Chip of Raspberry Pi referred to usually as "BCM2835" (e.g. on Wikipedia), but sometimes as "BCM2708" (e.g. sources for Linux SPI driver are in bcm2708.c, or in comments to my other question).
Which is right, or are both -…
akavel
- 1,216
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60
votes
3 answers
Is the Raspberry Pi vulnerable to the Spectre or Meltdown exploit?
There are two new serious security flaws discovered, Spectre and Meltdown.
Is the Raspberry Pi vulnerable for Spectre and/or Meltdown?
Janghou
- 1,446
- 1
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60
votes
3 answers
How do I use the command line to check which WiFi network I am connected to?
I'm doing a headless setup, where we use the Pis in field work (tracking movement of seals via camera in the Cape Cod area), and so we can only monitor it headless, without a separate display (to save on power).
In order to have the Pis get time, I…
ericmjl
- 845
- 2
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59
votes
8 answers
How can I stream H.264 video from the Raspberry Pi camera module via a web server?
So I got the Raspberry Camera today and got stills working fine.
Capture an image in JPEG format:
raspistill -o image.jpg
Capture a 5-second video in H.264 format:
raspivid -o video.h264
I do not want to install any extra application as I want to…
Piotr Kula
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59
votes
7 answers
Which model Raspberry Pi I am running?
Is there a way of determining whether the current Raspberry Pi is either a 2 Model B and 3 with Raspbian Jessie Lite 8.0?
This is because I have a particular bootstrap.sh written in Bash where it needs to set the attribute txpower for a Wi-Fi USB…
Shan-Desai
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- 2
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- 28
58
votes
5 answers
Using the Raspberry Pi as a router?
Has anyone used their Raspberry Pi as a routing device?
Mainly I want to use it to monitor my network, and it would be great if it had an input and output for Ethernet, but it doesn't, so I am wondering if it is very effective to monitor the network…
clifgray
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