EVNotiPi

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
• OTG cable for Raspberry Pi https://buyzero.de/collections/raspberry-kabel-und-adapter/products/micro-usb-zu-usb-otg-adapter
• small wires in different colors: https://www.amazon.de/AZDelivery-Jumper-Arduino-Raspberry-Breadboard/dp/B07KYHBVR7?tag=gplay97-21
• 4 screws M2,5x15 (to fix the OBD-Hat into the case)
• 5 screws M2,5x8 self-cutting (for the case)
• LTE Stick Huawai E8372 https://amzn.to/3hCsMmW
• A case, for example https://github.com/noradtux/evnotipi-case
• The i2c watchdog and power supply, https://github.com/noradtux/evnotipi-watchdog

Variant 1 (MCP2515 based adapter with GPS); Recommended:

• PiCan2 with GPS: https://buyzero.de/products/pican-2-mit-gps / http://skpang.co.uk/catalog/pican-with-gps-canbus-board-for-raspberry-pi-23-p-1520.html
• µFL to SMA: http://skpang.co.uk/catalog/interface-cable-sma-to-ufl-p-551.html / https://www.amazon.de/Adafruit-u-FL-Adapter-Cable-ADA851/dp/B00XW2LKNO?tag=gplay97-21
• Active external GPS antenna: http://skpang.co.uk/catalog/gps-antenna-with-sma-male-connector-p-236.html / https://www.amazon.de/Adafruit-GPS-Antenna-External-Active/dp/B01M0QB38R?tag=gplay97-21

Variant 2 (MCP2515 based adapter without GPS):

• PiCan2: https://buyzero.de/products/pican-2 / http://skpang.co.uk/catalog/pican2-canbus-board-for-raspberry-pi-2-p-1475.html
• Long Header Extender: http://skpang.co.uk/catalog/2x20pin-header-extender-with-105mm-pins-p-1500.html

Variant 2.1 (additional external GPS):

• External GPS: https://www.amazon.de/Adafruit-Channels-GPS-Empfänger-Modul-145-dBmW-66-Channels-blau/dp/B01H1R8BK0?tag=gplay97-21

Variant 3 (Diamex OBD-Hat, the old default; does not support Renault Zoe):

• Diamex OBD-Hat: https://www.diamex.de/dxshop/PI-OBD-HAT-OBD2-Modul-fuer-Raspberry-PI with flat connector

Wiring

OBD2 connection

The case has a slot for a DB9 plug (the side with the pins). Connect the DB9 plug to CAN_H and CAN_L of the CAN-hat; connect GND and 12V to the watchdog. Pinout is as follows:

OBD2        DB9
4,5  GND    1,2
  6  CAN_H  3
 14  CAN_L  5
 16  12V    9

This pinout should be compatible to most DB9 to OBD2 cables. One can always build one's own cable, though.

Installation

Raspberry Pi

• sudo apt update
• sudo apt upgrade
• sudo apt install python3-{pip,rpi.gpio,serial,requests,sdnotify,pyroute2,smbus,yaml,gevent} gpsd git watchdog rsyslog-
• sudo systemctl disable --now [email protected]
• sudo sed -i -re "\$agpu_mem=16\nmax_usb_current=1\nenable_uart=1\ndtoverlay=disable-bt\ndtoverlay=gpio-poweroff:active_low" -e "/^dtparam=audio=/ s/^/#/" /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

If using MCP2515 based adapter:

• sudo apt install dkms
• sudo git clone https://github.com/noradtux/can-isotp /usr/src/can-isotp
• sudo dkms add /usr/src/can-isotp
• sudo dkms install -m can-isotp -v r26.ced84ca
• sudo sed -i -re "\$adtparam=spi=on\ndtoverlay=mcp2515-can0,oscillator=16000000,interrupt=25\ndtoverlay=spi-bcm2835-overlay" /boot/config.txt
• echo -e "[Match]\nDriver=mcp251x\n\n[CAN]\nBitRate=500000\nRestartSec=100ms" | sudo tee /etc/systemd/network/can.network
• sudo systemctl enable --now systemd-networkd

If using the i2c watchdog (the one with the Trinket M0):

• sudo sed -i -re "\$adtparam=i2c_arm=on,i2c_arm_baudrate=50000" /boot/config.txt
• sudo sed -i -re "\$ai2c-dev" /etc/modules

EVNotiPi

• sudo git clone https://github.com/EVNotify/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 systemctl disable evnotipi_shutdown.{timer,service} # if updating
• sudo cp config.yaml.template config.yaml

Edit config, follow comments in the file

• sudo nano config.yaml # nano or any other editor

Optionally: Set up a GPS receiver

Set up gpsd, see a tutorial here: https://maker.pro/raspberry-pi/tutorial/how-to-use-a-gps-receiver-with-raspberry-pi-4. Once the "sudo cgps -s" command works, you are done.