install-your-own-pi.txt

If you want to run our grovepi software on your own raspberry pi, ask Joe or Stuart and we can burn an sd card for you with a pre-prepared image.

If you don't want to, the instructions below *should* work, as they are roughly how I set up our raspberry pis, but I can't guarantee that they aren't slightly out of date, so you are likely to have some fiddling to do.


First, download raspbian image from: 
https://www.raspberrypi.org/downloads/raspbian/
We use lite version on the lab PIs, I think either version will work.

Write the image to an sd card. On windows I used Win32diskimager
http://sourceforge.net/projects/win32diskimager/?source=typ_redirect

Make raspberry pi talk to the grovepi (via I2C)
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c
Start up the raspberry pi with a screen/keyboard (you can connect hdmi to screens in the lab, ask us if you need a keyboard (or unplug from lab machines))
1) sudo raspi-config (if it isn't already in raspi-config)
2) Select interfacing options
3) Select I2C, and press yes to everything - I2C is how the raspberry pi talks to the grovepi board
4) Log in (pi / raspberry)


6)Connect to the wifi network or an ethernet cable.
If you're in the computer lab, you can connect to eduroam. To do this:
 
type:
 sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
 
paste into that conf file exactly the below, except with your username and password in there:

network={
  ssid="eduroam"
  key_mgmt=WPA-EAP
  pairwise=CCMP
  group=CCMP TKIP
  eap=PEAP
  identity="<USERNAME>@nottingham.ac.uk"
  domain_suffix_match="radius.nottingham.ac.uk"
  phase2="auth=MSCHAPV2"
  password="YOUR_PASSWORD"
  anonymous_identity="anonymous@nottingham.ac.uk"
}

or for a home network it looks like this:

network={
ssid="Joe and Penny"
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP TKIP
group=CCMP TKIP
psk="your network password"
}

7)Restart wifi
type: sudo ifconfig wlan0 down
sudo ifconfig wlan0 up

8) update everything
sudo apt-get update
sudo apt-get upgrade

8)  Install useful i2c utilities:
sudo apt-get install i2c-tools
sudo apt install python3-rpi.gpio

9) make sure kernel support for i2c is reallyu on
sudo i2cdetect -y 1
This should work, and should show something on address 4 of the i2c bus. If not, follow the 'manually enable i2c' instructions from https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c

10)Download the lab software:
First install GIT, which lets you get hold of the software, and subversion which is used in the getlatest script

sudo apt-get install git
sudo apt-get install subversion
git clone https://github.com/joemarshall/g54mrt-useful-code.git

11)Install the show ip address script (and an update script which will get latest versions from github when they change.
cd ~/g54mrt-useful-code/startup-scripts
sudo cp rc.local /etc/rc.local
sudo cp showIP.py /home/pi
sudo cp grovepi.py /home/pi
sudo cp grovelcd.py /home/pi
sudo cp checkUpdate.sh /home/pi

12)Install python3 virtual environment (optional - this makes it so you don't have to type python3 to run your scripts) and make it run as default on login
sudo apt-get install python3-pip
sudo pip3 install virtualenv
virtualenv --system-site-packages py3
echo "source ~/py3/bin/activate\n" >> ~/.profile

13)Add g54mrt user and get the latest grovepi stuff into that user
sudo adduser g54mrt
cd /home/g54mrt
sudo cp /home/pi/g54mrt-useful-code/grovepi-base/getlatest.sh .
sudo chown g54mrt.g54mrt /home/g54mrt/getlatest.sh
sudo -u g54mrt bash ./getlatest.sh
sudo adduser g54mrt i2c 

14) Login as g54mrt then make a virtualenv there too 
virtualenv --system-site-packages py3
printf "source ~/py3/bin/activate\n" >> ~/.profile