Project Finished - moving on to

• https://github.com/Mathews2115/AutoDashBackEnd
• https://github.com/Mathews2115/AutoDashFrontEnd

Teslonda Server App

The Teslonda Dash consists of a two RaspberryPi 3s running Raspberian Lite, networked to each other via Ethernet.

It runs a NodeJS app that listens and parses CAN messages from an HSR controller. Sends the data via websocket to to the Teslonda Front-end.

It also servers the front up via NodeJS Express.

Backend Server for Teslonda Dash

• Teslonda Front-end
• RaspberryPi setup

Workflow

1. Compile Teslonda Front-end
2. Copy to the public/dist directory on the server of the Raspberry Pi3
3. Run the server!

Quick note:

This was a pet project that was made in rapid prototype fashion due to massive time constraints; there are no tests, there are plenty of style guide violations as this was my first NodeJs project. This was uploaded without curation so I apologize for the possible curse words, bugs and bad form you might come across. There are no hard-tabs though, so there is that.

This comes preloaded with a version of the Teslonda Dash ready to rumble.

Overview

This launches a webserver that will serve up the Front-end dash content as well as launch a Node app that will listen to CAN from a HSR (look up Jason Hughes HSR) Controller.

Web Socket packets

It's imporant to group data up in "frame" packets; deliver relevant data every 16ms (equilivant to 60fps) as to not drown the front-end in data; the Raspberry Pi 3 is pretty dang capable but when a busy clunky frontend like a chromium web-app receives socket data, a lot happens each time data comes in, and will quickly bog things down if it isn't regulated.

Install

• on your raspberry pi

1. copy all contents to can-server
2. Prepare Dev enviroment on RPI: run ./RPI_system/prepare_dev.sh
3. Or prepare production environment: run ./RPI_system/prepare_production.sh

General

• The front-end web content (Teslonda Front-end) is stored in public/dist.
• npm run vcan_server - virtual-CAN and test server
• npm run can_server - CAN server
• Teslonda Front-end served onlocalhost:3333
• Websocket Server listening to localhost:4000

To Debug Live

• npm run can_server - to get main web server and can server up and running
• Get the Pi's IP
• On your local pc, navigate to [pi's ip]:3333
• Modify App code in Comm service to connect to [pi's ip]:4000

Additional Setup (PiCAN2)

PiCAN2 Device Overlays

1. Enable SPI either through raspi-config or add dtparam=spi=on to /boot/config.txt
2. put the following in /boot/config.txt

#CAN bus controllers
dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=25
dtoverlay=spi-bcm2835-overlay

to auto-start CAN interface on bootup for Rasperry Pi

• see https://raspberrypi.stackexchange.com/questions/51829/unable-to-bring-can-interface-up-on-raspberry-pi-3

1. sudo nano /etc/network/interfaces
2. Paste this

auto can0
iface can0 inet manual
   pre-up /sbin/ip link set can0 type can bitrate 500000 triple-sampling on
   up /sbin/ifconfig can0 up
   down /sbin/ifconfig can0 down

NETWORKING SETUP

https://gist.github.com/Mathews2115/3be0b1173be222e73ba4d8181558d409