Self Driving RC Car/2020

Videos

Presentation

Source Code

Parts List

Assembly

Raspberry

PI Installation

Server Installation

Deployment

First Experiments

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• https://github.com/rc-dukes/dukes

In the javadoc apidocs you'll also find generated uml-diagrams like this one: https://rc-dukes.github.io/dukes/dukes/apidocs/nl/vaneijndhoven/daisy/package.svg

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Parts-List as Excel File

#	picture	part	example sources	documents	~ price
1		1:10 RC Car chassis	1:10 elektro tourenwagen chassis ARR TAMIYA 57986" 1:10 RC TT-02-Chassis First Try On-Road	de/en/fr/nl Tamiya 57986	70 €
2		Speed Control	Modelcraft Carbon Series Speed Control "20 Turns"	de/en/fr/nl	21 €
3		RC-Car servo	RC-Car servo 4519 Carson 500502036 - Servo CS-6 - 6 kg/JR-Stecker	de/en	10 €
4			TopFuel LiPo 25C-ECO-X 1300mAh 3S  NiMH 7.2V 3500 mAh		16 €
5		Battery Charger	Ansmann NiMH Charger		27 €
6		Raspberry PI 3 B+	Raspberry PI 3 B+	en	35 €
7		microSD Card	SanDisk 16 GB		7 €
8		Raspberry PI Camera	1080 p Camera Module		23 €
9		DC/DC Converter 12 V-> 5V	12 V->5 V Converter Module		7 €
10		Micro USB Connector	Delock USB 2.0 Micro USB		6 €
				Total	199 €
a		Breadbord Kit	MB102 Breadbord Kit		7 €
b		Ulrasound Sensor	5 x HC-SR04 + Cables		10 €

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DCC-DCC converter

To run the Raspberry PI from the 7.4 Volt Battery of the car the DC-DC converter has to be soldered into the voltage supply chain.

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Camera mount

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Servo and LED

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For a start a 3D Printed case for the Raspberry PI was used:

https://cdn.thingiverse.com/renders/c4/f0/15/73/67/2094b280ac54121f9dad5fc172b1a3eb_preview_featured.jpg https://cdn.thingiverse.com/renders/1b/80/70/b5/5a/081727802f13879a77f4b8bfbd0277d1_preview_featured.jpg

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Raspbian

Raspbian Stretch with desktop and recommended software

1. Download Zip File from https://www.raspberrypi.org/downloads/raspbian/
2. Create SD Card as described in https://www.raspberrypi.org/documentation/installation/installing-images/
3. Insert SD Card into Raspberry PI
4. Connect Keyboard, Mouse, HDMI-Monitor and 5 Volt Mini USB (2.5 Amps recommended)
5. Setup Country, pi user password etc. and connect to your WIFI network - after the setup you'll be asked to restart your pi

WebCam Interface

• https://github.com/silvanmelchior/RPi_Cam_Web_Interface

cd /usr/local/src
sudo git clone https://github.com/silvanmelchior/RPi_Cam_Web_Interface.git
cd RPi_Cam_Web_Interface/
./install.sh

In case of error

A message like:

#mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)
sh: 1: /var/www/html/macros/error_hard.sh: Permission denied

Indicates that you might have a cabling problem.

In case of success

http://<yourpi>/html should show the cam interface:

Servo Interface - Servoblaster

• https://github.com/richardghirst/PiBits/tree/master/ServoBlaster
• https://github.com/srcshelton/servoblaster

wf@pibee:~ $ cd /usr/local/src
wf@pibee:/usr/local/src $ sudo git clone https://github.com/srcshelton/servoblaster
cd servoblaster
sudo make install
sudo reboot

OpenJDK

sudo apt-get install openjdk-8-jdk

Screen

sudo apt-get install screen

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Tested on

1. Mac OS 10.13.6 High Sierra with macports 2.5.4
2. Ubuntu 18.04.2 LTS

OpenCV

MacOS

If you'd like to generally use OpenCV you can get it e.g. from the macports project:

sudo port install opencv +java
ls /opt/local/share/OpenCV/java
libopencv_java343.dylib opencv-343.jar

For your convenience you'll find these two files in the lib directory.

Ubuntu 18

You might want to use scripts/opencvubuntu to download the 75 MByte libopencv_java343.so and install the backports libjasper libraries that are not published with Ubuntu 18 by default. You'll find some other links in the script that might also give you hints on how to proceed if you have another environment or different needs. You might want to create an Issue if you run into trouble.

Windows

Help Wanted -please file an issue if you want to things running on Windows.

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Deploying to your Raspberry is done by compiling e.g. on a laptop and then transferring the results to your PI.

You need to configure your targetHost and targetUser in a file ~/dukes/dukes.ini

Example Configuration

#
# WF 2019-06-21
#
# rc-duke configuration file
# remote car raspberry PI configuration
remotecar.host=2.0.0.111
remotecar.user=wf
# camera url format
camera.url=http://2.0.0.111/html/cam_pic_new.php
# webserver configuration
webcontrol.port=8080
imageview.port=8081
# be careful with your GPIO configuration
# you might damage your PI with a misconfiguration!
# led configuration
led.gpio=24
led.on=250
led.off=0
# wheel configuration
wheel.gpio=18
wheel.center=130
wheel.stepsize=5
wheel.maxleft=100
wheel.maxright=160
# engine configuration
engine.gpio=17
engine.speed.zero=130
engine.stepsize=1
engine.min.speed.reverse=130
engine.max.speed.reverse=130
engine.min.speed.forward=155
engine.max.speed.forward=157

The deploy script as a help option that shows how it can be used:

deploy.sh [-a|-d|-h|-m|-s]

  -a |--autostart         : configure the remotecar app to autostart on reboot
  -d |--debug             : debug this script
  -m |--maven             : run maven install
  -h |--help              : show this usage
  -s |--start             : deploy and start remotecar (duke) fat jar

• deploy -m will create the duke-farm fat jar
• deploy -s will send the jar to your PI using rsync and start it
• deploy -a will create an autostart configuration that restarts the client on reboot see https://github.com/rc-dukes/dukes/issues/26

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1. Ultrasonic Sensor
2. SG90-Servo
3. Raspberry PI Camera
4. Raspberry PWM LED Control