#Raspberry Pi Stuff
Scripts and files for use on my Raspberry Pi.
| Directory | Notes |
|---|---|
| notes/ | General notes I've made about working with the Pi |
| unicorn_hat/ | Controlling the Pimoroni Unicorn HAT |
##Installing the Raspbian OS to an SD Card (OS X)
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Download the latest version of Raspbian from https://www.raspberrypi.org/downloads/
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Plug in the SD Card and launch the OS X Disk Utility.
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Select the SD Card and erase its contents, formatting to MS-DOS (FAT)
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Click the info button and note the 'Disk Indentifier' (i.e. 'disk#')
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Right click on the newly formatted partition and select 'unmount'
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Open a terminal window and run the following, replacing 'diskn' with the Disk Identifier, noted above:
sudo dd bs=32m if=path_of_your_image.img of=/dev/diskn
This should take ~30 mins to an hour. Once finished, eject the SD card and plug it into the Pi before connecting the system to a power source.
##Initialization Upon reinstalling Raspian on the Pi, you should update all packages and install the following software:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install vim Get vim text editor
sudo apt-get install python-pip Get pip for Python 2.0 packages
sudo apt-get install python-dev Get dev libraries for Python
###Specific issues:
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To get a full screen display, edit the /boot/config.txt file to make sure that the disable_overscan setting is uncommented and set to 1.
disable_overscan=1 -
Mouse movement in the Raspian desktop environment is sluggish, which can be fixed by integrating the following option into the single command line in the file /boot/cmdline.txt, separated by spaces:
usbhid.mousepoll=0 -
If you've ever accidentally configured the Pi to boot into scratch, press CONTROL+ALT+F2 to access a terminal and rerun the configuration menu with sudo raspi-config, choosing another boot option.
##Basic tools/commands
Critical shell commands:
sudo reboot Reboot the Pi
sudo shutdown -h now Shutdown the Pi
sudo raspi-config Initialize the configuration menu
startx Launch the GUI
ip addr show Show the Pi's IP address
vcgencmd [command] Get physical statistics from Pi
measure_temp Get temperature (°C)
measure_volts Get voltage
vcgencmd measure_clock arm Get processor freq in Hz