Raspberry Pi Stack Exchange
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1500 questions
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4 answers

How to tell how much memory is left on the SD card?

I have a raspberry pi, I've downloaded quite a few extras on it. I would like to be able to check how much memory I have left on my SD card. Is there a command that tells you memory available? Is the info in a file somewhere? Or do I have to…
Dom
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Can I use Eye-Fi Wi-Fi SD card?

The Eye-Fi is a class 6 SD card with 802.11n Wi-Fi capability built in. This would be a nice way of adding wireless network connectivity to the Raspberry Pi. Is there a way of doing this ?
image_doctor
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Is Raspberry Pi resistant to nuclear radiation?

I've had this wacky idea to turn my Raspberry Pi into an autonomous Geiger counter that would log the decay rate at various high-radiation sites such as Chernobyl Exclusion Zone or the surroundings of various power plants. I would like to know if…
Buford Selser Eliott
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Can the Pi 4 power 2 external USB 3 HDDs?

I would like to connect two external 2.5 HDDs a Pi 4. Can the Pi 4 power two of them at once? This is the model I have in mind: WD 2TB Elements
Pierre Spring
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3 answers

Can I power a USB SSD/HDD?

I read the power supply should have 0.7A and that RPi by itself requires around 0.4A-0.5A. So, what if I want to connect an external USB SSD/HDD? External SSD can require 0.5A (and maybe more), so should I use a power supply with more than 0.7A?…
Paolo
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19
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8 answers

Can I power Raspberry Pi using the mini USB to USB cable connected to a computer?

My question is quite simple. I'm asking if I can use the power cable you get along with it as a USB power supply. Instead of plugging it to a power socket, can I use the USB to connect directly to my computer? I'm asking this because I'm not sure…
user8830
19
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7 answers

How to get a good overview over used space?

Is there a command line package/application to get a good (maybe visual) overview over the free/used space left on Pi's SD-card. ls -lh is nice but it does not show me how much space the content of a folder uses. Also it would be helpful if it gives…
verpfeilt
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3 answers

Is it possible to detect input voltage using only software?

I'm a newbie to Raspberry Pi's, but one of the things I was thinking about doing is running it off batteries (I see many people do this) - that led me to concerns about shutting down gracefully. Is there a software only solution that would allow me…
Aerik
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How do I create and mount a partition using the remainder of my SD card?

I have seen instructions for resizing the partition here, but how do I create a whole new partition using the remaining space, and then mount it?
David Sykes
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GPIO: Warning Channel already in use

gpio.py:5: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings. GPIO.setup(8, GPIO.OUT) That is what I get after I run: import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(7,…
LilVinny
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3 answers

Tell apart RPi 1 from RPi 2 via SSH only

I am connected to 2 Raspberry Pis via SSH. They are running the same OS (Raspbian in this case). How can I tell which one is Pi 1 and which one is Pi 2? I know how to identify the physical hardware (e.g. micro SD vs SD slot, yellow video output…
Thomas Weller
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5 answers

How can I cut power coming out of the Pi's USB ports?

I have a simple device connected to the Raspberry Pi, a small USB fan. The problem is that the fan does not have a on/off switch so I must unplug the fan every time I want it to stop. My question is: is there any way I can cut the power coming from…
opc0de
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3 answers

How can I install GStreamer gst-omx?

Been having the toughest time over the last week trying to get gst-omx plugin working with gstreamer on the Raspberry PI. I wonder if anyone here has done it and could show me how? I've installed wheezy as…
user185955
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2 answers

Whenever I install Iceweasel it installs Firefox instead

I used the following command to install Iceweasel. sudo apt-get install iceweasel However, instead of Iceweasel, I get Firefox. Not that I'm complaining much, I love Firefox. If you click on Menu > Internet, there are 2 Firefox logos. One says…
BadgerTrucking
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5 answers

Raspbian root default password

I tried to modify the sudoers file on Raspbian /etc/sudoers, and it looks like I made a mistake, as I'm unable to modify it again. I am also unable to call any command that requires sudo permissions. So I have done some research and I found a…
Dani
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