WebCams_trac.txt

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= WebCams =

Notes on setting up new driver cam from WPILibPi (formerly FRCVision).

== Install ==

 * Start from the most current WPILibPi image, found on the WPILibPi repo: [https://github.com/wpilibsuite/WPILibPi/releases WPILibPi repo].
 * Download the current image (as of this writing, 2021.3.1): [https://github.com/wpilibsuite/WPILibPi/releases/download/v2021.3.1/WPILibPi_image-v2021.3.1.zip Image]
 * Burn to an SD card (best choice Raspberry Pi Imager)
 * Login to 'pi', either directly or over ssh to 'wpilibpi.local' on a local LAN
 * Make sure that you are in write mode (the prompt will either have '(ro)' [for read-only] or '(rw)' [for writeable] appended) by typing the command 'rw'
 * Run raspi-config:
{{{
sudo raspi-config
}}}
 * Select 'Change Password' under System Settings and set a new password for the 'pi' account ('''Write it down! ''')
 * Also under System Settings, select the Hostname option and set a new host name for the Pi
 * Select 'Finish' and reboot the Pi
 * Login to the 'pi' account
 * Check the date with the 'date' command.  Fix if wrong.
 * Do an apt update (the releaseinfo-change option is because buster is old):
{{{
apt update --allow-releaseinfo-change
}}}
 * Do an apt upgrade (this could take a while, if there are a lot of upgrades):
{{{
mount -o remount,rw /
mount -o remount,rw /boot
apt upgrade
}}}
 * Reboot the Pi again
 * Login, set filesystem to writable ('rw' command)
 * Install some needed packages:
{{{
sudo apt-get install python3-pip git vim tree lsof i2c-tools lshw aptitude
}}}
 * Install apps for rpi-clone:
{{{
sudo apt-get install rsync parted util-linux mount bsdmainutils dosfstools
}}}
 * Clean things up
{{{
sudo apt-get clean
sudo apt-get autoremove
}}}
 * Install Python extensions (probably already installed, but just to be safe):
{{{
sudo python3 -m pip install picamera
sudo python3 -m pip install numpy
sudo python3 -m pip install pynetworktables
}}}
 * Install node and extensions.  Grab the latest LTS version from unofficial-builds.nodejs.org [wget https://unofficial-builds.nodejs.org/download/release/v16.9.1/node-v16.9.1-linux-armv6l.tar.gz NodeJS].
{{{
sudo mkdir -p /usr/local/lib/nodejs
sudo tar ztf node-v16.9.1-linux-armv6l.tar.gz
mv node-v16.9.1-linux-armv6l /usr/local/lib/nodejs/
ln -s /usr/local/lib/nodejs/node-v16.9.1-linux-armv6l/bin/node node
ln -s /usr/local/lib/nodejs/node-v16.9.1-linux-armv6l/bin/npm npm
}}}
 * Test for successful install, by checking versions:
{{{
node -v
npm -v
}}}
 In this case, the commands return 'v16.9.1' and '7.21.1', respectively.