From my point of view, there are three basic things that I see in the Pi that I don't see elsewhere:
1. Price: Dollar for dollar, it can't be beat. This is going on the assumption that you already have all the peripherals that the reviews say 'increase the cost'. It is small enough and cheep enough that I can use it as a single purpose machine that just ...
There are multiple things that I know why Pi
1: A full operating system
The Raspberry Pi runs a full operating system with the most common one being Debian linux (Raspbain). This means that you can use a wide range of programming languages from Python, Java (Debian Soft Float) , C, Node.Js, PHP ect! It also allows a GUI interface as default can be used as ...
There is one important thing that tends to be overlooked:
The Pi has critical mass - there is enough units out there to make it mainstream and that you can expect other people to have done a lot of the work you need to do yourself for units below critical mass.
Just one example: there are at least three XMBC distributions you just download and boot and ...
You could do this via the /etc/hosts file, however, this method can be easily over-ridden with the right knowledge and file access. Beyond the /etc/hosts file, there are two methods that I know of, both using Proxys.
These answers were originally for Ubuntu, but they should work just the same on Raspbian (or possibly with a bit of modification,) as both ...
I'm a little late to answer, but my solution only involves two simple command issued from the console (one to turn the volume up, one to turn the volume down). It require only a little setup, and the use of aliases.
Make sure you are in the user folder:
$ cd ~/
Create the file .bash_aliases (this will be where I keep all the aliases I make so they aren't ...
Current Raspbian (based on Debian Buster distro) has SageMath version 8.6
So yes, it has been ported to Debian, adn this port allowed it to run on Raspberry Pi. Current development vesrions of Sagemath can be built on Pi 4 with 8Gb of RAM, I don't know whether this is possible on less powerful models.
pi@raspberrypi:~ $ uname -a
Linux raspberrypi ...
The sage version 6.9 for 12.10 Ubuntu arm available through http://mirrors.mit.edu/sage/linux/arm/meta/sage-6.9-armv7l-Linux-Ubuntu_12.10.tar.gz.torrent works perfectly on Pi 3B board with 32 bit Raspbian Jessie desktop. Just extract that downloaded tar.gz file into RPI's home directory and give executable permission to the binary file "sage" by $ sudo chmod ...
The Raspbian Jessie repositories do not have a usable version of sagemath. The packages that look as if they might be seem to be ancient support packages from 2012, but the main system itself is missing.
While it does look technically possible to compile sagemath under Raspbian (given a couple of days + plenty of additional swap space), it doesn't look as ...
Personally I'd go with the bcm2835 library as its closest to the hardware.
If you want to work with a DHT11 then see: A Custom Protocol - The DHT11/22
Which covers the entire how to use the DHT22 in more detail than you could ever need :-)
http://www.raspberryconnect.com has a user projects area set out by category with the aim of being a directory of raspberry pi projects, websites and blogs. Anybody with a Raspberry Pi project or website can add their own content.
I've asked myself the same question and in the past 2 weeks I have found a few sites with some simple projects. Some were already mentioned above, like Adafruit Learning Systems, or the pretty big collection of projects on the RPi Forum. The eLinux list is probably the biggest collection of links to tutorials and projects I've found so far.
An improperly isolated power adapter driving Raspberry Pi can cause electrical shock.
Usually most power adapter usually used to drive Pi are SMPS. Below is a picture of proper SMPS isolation:
You can see a large slot on the PCB (below text L-4765) that provides electrical and physical isolation between the primary and secondary sides of the power supply. ...
alsamixer comes out-of-the-box and has a text-mode "GUI" which works over ssh.
You can use up/down arrows to control volume, as well as numbers from 0 to 10, which means you can turn your mobile into a fancy "remote volume control", where tapping 1 would be the lowest volume, and 9 the highest.
Number keypad mode is available (on android) in gboard, swype, ...
Here's a solution for Raspian with amixer output for both channels Left and Right for the Master control:
Volume up by 5:
amixer set Master -- $[$(amixer get Master|grep "Front Left"|grep -o [0-9]*%|sed 's/%//')+5]%
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined penum
Playback channels: Front Left - Front Right