EVNotiPi Nerd Edition

Python Version of EVNotify

Needed Hardware

• Raspberry Pi Zero W with GPIO Header https://buyzero.de/collections/boards-kits/products/raspberry-pi-zero-w-easy-mit-bestucktem-header
• small wires in different colors: https://www.amazon.de/AZDelivery-Jumper-Arduino-Raspberry-Breadboard/dp/B07KYHBVR7?tag=gplay97-21
• Blutooth USB Dongle
• GPS Module plus external GPS Antena
• mobile phone with active hotspot

Installation

Raspberry Pi

• sudo apt update
• sudo apt upgrade
• sudo apt install python3-{pip,rpi.gpio,serial,requests,sdnotify,pyroute2,smbus,yaml,gevent,bottle} gpsd git watchdog rsyslog-
• sudo systemctl disable --now serial-getty@ttyAMA0.service
• sudo sed -i -re "\$agpu_mem=16\nenable_uart=1" /boot/config.txt
• sudo sed -i -re '/console=/ s/$/ panic=1/' /boot/cmdline.txt
• sudo sed -i -re '/max-load/ s/^#//' /etc/watchdog.conf
• sudo sed -i -re "\$adtparam=watchdog=on" /boot/config.txt

Set up Bluetooth OBDII dongle

• sudo bluetoothctl
• [bluetooth]# power on
• [bluetooth]# scan on

Note the MAC address of your dongle

• [bluetooth]# scan off
• [bluetooth]# pair <MAC>
• [bluetooth]# quit
• sudo rfcomm bind 0 <MAC>
• ls /dev/rfcomm0 # /dev/rfcomm0 should appear

Set up a GPS receiver

Verify that the GPS receiver is working correctly. If not, see a tutorial here: https://maker.pro/raspberry-pi/tutorial/how-to-use-a-gps-receiver-with-raspberry-pi-4

• gpsmon

I had to make changes to /etc/default/gpsd, or else sometimes the GPS would not work after the device was off for a few hours (>4 hours?).

• sudo sed -i -re 's/^(DEVICES=).*/\1\"\/dev\/gps0\"/' -e 's/^(GPSD_OPTIONS=).*/\1\"-n\"/' /etc/default/gpsd

Set up wifi network connections

• Modify /etc/wpa_supplicant/wpa_supplicant.conf and add all necessary wifi connections
• Optional: Modify /etc/dhcpcd.conf to specify fixed IP addresses for the networks, at least for the Hotspot one as my cheap and old Android phone doesn't allow that afaik

EVNotiPi

• sudo git clone https://github.com/Duetting/EVNotiPi /opt/evnotipi
• cd /opt/evnotipi
• sudo pip3 install -r requirements.txt
• sudo systemctl link /opt/evnotipi/evnotipi.service
• sudo systemctl enable evnotipi.service
• sudo cp config.yaml.template config.yaml

Edit config, follow comments in the file

• sudo nano config.yaml # nano or any other editor
• sudo mkdir -p /var/cache/evnotipi