Smart Skateboard

Smart skateboards and bikes. Fall 2016.

Raspberry Pi Setup

Set password

passwd
# default: raspberry
# new: skateboard

Install things

sudo apt-get update
sudo apt-get install sense-hat
sudo apt-get install build-essential python-dev git scons swig # for rpi_ws281x
sudo reboot

git clone https://github.com/jgarff/rpi_ws281x.git
cd rpi_ws281x
scons
cd python
sudo python setup.py install

git clone https://github.com/usccorpuscallosum/smartskateboard.git /home/pi/skateboard

Start program on boot

sudo echo "python /home/pi/skateboard/main.py" >> /etc/rc.local

Disable audio drivers to get LEDs working

(See jgarff/rpi_ws281x#103)

1. Add the following to /boot/config.txt:

hdmi_force_hotplug=1
hdmi_force_edid_audio=1

and also prepend a # to the dtparam=audio=on line

1. Blacklist audio driver

sudo echo 'blacklist snd_bcm2835' > nano /etc/modprobe.d/snd-blacklist.conf

Run it for the first time

sudo python /home/pi/skateboard/main.py

Other commands

Copy code to Pi over SSH (from laptop)

cd smartskateboard
scp *.py [email protected]:/home/pi/skateboard

Kill running process

sudo pkill -fe skateboard/main.py

Resources

• https://pythonhosted.org/sense-hat/api/
• https://github.com/jgarff/rpi_ws281x
• https://learn.adafruit.com/neopixels-on-raspberry-pi/overview
• http://abyz.co.uk/rpi/pigpio/python.html
• https://wiki.qt.io/Apt-get_Qt4_on_the_Raspberry_Pi
• https://learn.adafruit.com/flora-brakelight-backpack/the-code
• https://www.raspberrypi.org/documentation/hardware/sense-hat/images/Sense-HAT-V1_0.pdf
• https://www.raspberrypi.org/forums/viewtopic.php?t=122972&p=827474
• http://pinout.xyz/pinout/pin12_gpio18