Digital Race Dash designed for use on Raspberry Pi in a Honda S2000

DigitalRaceDashSlim

Digital Race Dash designed for use on Raspberry Pi in a Honda S2000

Features:

• Coolant Temp, Intake Temp, Battery Voltage, STFT, LTFT, Throttle Pos, Engine Load, Spark Advance, Gear Indicator, RPM (w/ MAX), Speed (w/ MAX)
• Adjustable Warning thresholds for Coolant Temp, Intake Temp, STFT, LTFT, RPM and Speed
• DTC Read and Clear Function
• Selectable F/C MPH/KPH
• Brightness Control

Screenshots & Photos:

Hardware and Setup I used:

• Raspberry Pi 3B
• Raspbian Buster Lite - (2020-02-13-raspbian-buster-lite) <- Newer untested as of now
• Python 3.7.3
• Official 7inch Raspberry Pi Display
• Simple 12V->5V converter: https://www.amazon.com/gp/product/B01M03288J/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
• Basic OBDII BT Dongle: https://www.amazon.com/gp/product/B009NPAORC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Install Kivy:

sudo apt-get update

sudo apt-get install libfreetype6-dev libgl1-mesa-dev libgles2-mesa-dev libdrm-dev libgbm-dev libudev-dev libasound2-dev liblzma-dev libjpeg-dev libtiff-dev libwebp-dev git build-essential

sudo apt-get install gir1.2-ibus-1.0 libdbus-1-dev libegl1-mesa-dev libibus-1.0-5 libibus-1.0-dev libice-dev libsm-dev libsndio-dev libwayland-bin libwayland-dev libxi-dev libxinerama-dev libxkbcommon-dev libxrandr-dev libxss-dev libxt-dev libxv-dev x11proto-randr-dev x11proto-scrnsaver-dev x11proto-video-dev x11proto-xinerama-dev

Install SDL2:

• wget https://libsdl.org/release/SDL2-2.0.10.tar.gz
• tar -zxvf SDL2-2.0.10.tar.gz
• pushd SDL2-2.0.10
• ./configure --enable-video-kmsdrm --disable-video-opengl --disable-video-x11 --disable-video-rpi
• make -j$(nproc)
• sudo make install
• popd

Install SDL2_image:

• wget https://libsdl.org/projects/SDL_image/release/SDL2_image-2.0.5.tar.gz
• tar -zxvf SDL2_image-2.0.5.tar.gz
• pushd SDL2_image-2.0.5
• ./configure
• make -j$(nproc)
• sudo make install
• popd

Install SDL2_mixer:

• wget https://libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.4.tar.gz
• tar -zxvf SDL2_mixer-2.0.4.tar.gz
• pushd SDL2_mixer-2.0.4
• ./configure
• make -j$(nproc)
• sudo make install
• popd

Install SDL2_ttf:

• wget https://libsdl.org/projects/SDL_ttf/release/SDL2_ttf-2.0.15.tar.gz
• tar -zxvf SDL2_ttf-2.0.15.tar.gz
• pushd SDL2_ttf-2.0.15
• ./configure
• make -j$(nproc)
• sudo make install
• popd

Make sure the dynamic libraries cache is updated:

• sudo ldconfig -v

Install the dependencies:

• sudo apt update
• sudo apt upgrade
• sudo apt install pkg-config libgl1-mesa-dev libgles2-mesa-dev \ python3-setuptools libgstreamer1.0-dev git-core \ gstreamer1.0-plugins-{bad,base,good,ugly} \ gstreamer1.0-{omx,alsa} python3-dev libmtdev-dev \ xclip xsel libjpeg-dev

Install pip3:

• sudo apt install python3-pip

Install pip dependencies:

• sudo python3 -m pip install --upgrade pip setuptools
• sudo python3 -m pip install --upgrade Cython==0.29.19 pillow

Install Kivy:

• sudo python3 -m pip install https://github.com/kivy/kivy/archive/master.zip

Copy code and data folders to /home/pi/DRDS

• “data” folder
• “kivymd” folder
• main.kv
• main.py
• savedata.txt

Navigate to DRDS directory and run main.py to create the config.ini file

• sudo python3 main.py

Configure for use with touch screen:

Edit /.kivy/config.ini by:

• sudo su
• cd ..
• cd ..
• cd root
• sudo nano .kivy/config.ini

Change [input] to:

mouse = mouse
mtdev_%(name)s = probesysfs,provider=mtdev
hid_%(name)s = probesysfs,provider=hidinput

Other Misc Setup:

In raspi-config -> Advanced Options -> Memory Split

• Change value to 512MB

Install Python OBD:

https://python-obd.readthedocs.io/en/latest/#installation

• sudo pip3 install obd

Install RPi.GPIO, Lite does not come with it..

• sudo apt-get install python3-rpi.gpio

Bluetooth Setup:

• sudo bluetoothctl
• agent on
• default-agent
• scan on
• pair xx:xx:xx:xx:xx:xx <- Your BT MAC here
• connect xx:xx:xx:xx:xx:xx
• trust xx:xx:xx:xx:xx:xx

Start on Boot:

• sudo nano launcher.sh

#!/bin/sh
# launcher.sh
# navigate to home directory, then to this directory, then execute python script, then back home

cd
cd /home/pi/DRDS
sudo python3 main.py
cd

Ctrl+x to Save

We need to make the launcher script an executable, which we do with this cmd:

• sudo chmod 755 launcher.sh

Now test it, by typing in:

• sh launcher.sh This should run DRDS.

Create a logs directory:

• mkdir logs

Type in:

• sudo crontab -e

Now, enter the line:

• @reboot sh /home/pi/launcher.sh >/home/pi/logs/cronlog 2>&1

Reboot for final test

Configure Variables:

Modify in main.py

• developermode 0=Off 1=On <- 0 for in vehicle use, 1 for development/demo use
• externalshutdown <- leave as 0 for now, in development
• AccelEnabled <- leave as 0 for now, Accelerometer in development
• OBDEnabled <- 1 if you are using OBDII features, leave it ON
• onPi <- its default 1, but will change to 0 in code if detected not running on Pi (for development on PC)
• autobrightness < 0 will keep brightness same as last boot, 1 allows custom time if using RTC, 2 will always dim on boot

OPTIONAL Clean up boot:

• Disable the Raspberry Pi logo in the corner of the screen by adding logo.nologo to end of string in /boot/cmdline.txt
• Disable the Raspberry Pi ‘color test’ by adding the line disable_splash=1 to bottom of /boot/config.txt
• Clean up the text by adding quiet to end of /boot/cmdline.txt and replace “console=tty1” with “console=tty3”