Setup Raspberry Pi

1. Install the latest Raspberry Pi image to SD Card

2. Create a file in the boot partition called ssh

3. Update packages

   sudo apt-get update sudo apt-get upgrade sudo apt-get autoremove sudo reboot

4. Create a new user

   1. sudo adduser epson
   2. Add to sudo sudo visudo add the line epson ALL=(ALL) NOPASSWD:ALL
   3. Remove old user sudo deluser pi
   4. Enable password less ssh
      1. mkdir .ssh
      2. Copy contents of local ~/.ssh/id_rsa.pub to pi ~/.ssh/authorized_keys
      3. Fix permissions chmod 700 .ssh; chmod 640 .ssh/authorized_keys

5. Fix the time

   sudo apt-get install ntpdate sudo /etc/init.d/ntp stop sudo ntpd -q -g sudo /etc/init.d/ntp start

6. Reboot nightly

   1. sudo vi /etc/crontab
   2. Add 0 5 * * * root reboot

7. Install node

   1. uname -m
   2. sudo apt-get install xz-utils
   3. wget https://nodejs.org/dist/v10.16.2/node-v10.16.2-linux-armv7l.tar.xz
   4. xz -d node-v10.16.2-linux-armv7l.tar.xz
   5. tar xf node-v10.16.2-linux-armv7l.tar
   6. cd node-v10.16.2-linux-armv7l
   7. sudo cp -R bin/ include/ lib/ share/ /usr/local/
   8. cd ..
   9. rm -rf node-v10.16.2-linux-armv7l
   10. sudo npm install -g npm

8. Install node-pi-rs232

   1. sudo su - (npm install requires being root and not just sudo)
   2. apt-get install git
   3. cd /opt
   4. git clone https://github.com/joeferner/node-pi-rs232.git
   5. cd /opt/node-pi-rs232
   6. npm install
   7. Autostart, add /opt/node-pi-rs232/run.sh > /dev/null 2>&1 & to /etc/rc.local

9. Change pi to readonly mode (see https://github.com/adafruit/Raspberry-Pi-Installer-Scripts/blob/master/read-only-fs.sh)

   1. scp read-only-fs.sh 192.168.0.161:
   2. sudo bash read-only-fs.sh
   3. Enable boot-time read/write jumper? y
   4. GPIO pin for R/W jumper: 21
   5. Install GPIO-halt utility? n
   6. Enable kernel panic watchdog? y