December 13, 2020

671 words 4 mins read



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

repo name Joelzeller/DigitalRaceDashSlim
repo link
language Python
size (curr.) 6852 kB
stars (curr.) 100
created 2020-05-24


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


  • 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:

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Hardware and Setup I used:

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
  • 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
  • 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
  • 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
  • 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

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

  • “data” folder
  • “kivymd” folder
  • main.kv
  • savedata.txt
  • sudo python3

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:

  • 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
# navigate to home directory, then to this directory, then execute python script, then back home

cd /home/pi/DRDS
sudo python3

Ctrl+x to Save

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

  • sudo chmod 755

Now test it, by typing in:

  • sh This should run DRDS.

Create a logs directory:

  • mkdir logs

Type in:

  • sudo crontab -e

Now, enter the line:

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

Reboot for final test

Configure Variables:

Modify in

  • 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”
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