commands.md

Commands for Jetson Nano

sudo apt-get install -y tmux ranger

Make jetbot not lock after 5 minutes

Start chromium and make default

open chrome://flags and disable smooth scroll open preferences and let chrome open with previous tabs

Python 3

sudo apt-get install python3-pip libhdf5-serial-dev hdf5-tools

The following follows the guide:

https://medium.com/@feicheung2016/getting-started-with-jetson-nano-and-autonomous-donkey-car-d4f25bbd1c83

Install Nivida GPIO

https://github.com/NVIDIA/jetson-gpio?source=post_page---------------------------

Download the .zip file to Downloads

cd ~/Downloads git clone https://github.com/NVIDIA/jetson-gpio.git sudo mv ~/Downloads/jetson-gpio /opt/nvidia/ cd /opt/nvidia/jetson-gpio sudo python3 setup.py install

Add user

sudo groupadd -f -r gpio sudo usermod -a -G gpio jetbot sudo cp /opt/nvidia/jetson-gpio/etc/99-gpio.rules /etc/udev/rules.d/ sudo udevadm control --reload-rules && sudo udevadm trigger sudo reboot

Try a sample which reads all pins:

python3 /opt/nvidia/jetson-gpio/samples/simple_input.py

Install Python GPIO library

pip3 install Adafruit_PCA9685 pip install Adafruit_PCA9685

Test connection

sudo i2cdetect -y -r 1

Add user

sudo usermod -a -G i2c jetbot sudo reboot

Check groups

groups

Should display at least i2c

Guide stopped

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Python code for running the motors

python pwm = Adafruit_PCA9685.PCA9685(busnum=1) pwm.set_pwm_freq(60) pwm.set_pwm(1, 0, 150) # Sets speed on channel 1 pwm.set_pwm(1, 0, 0) # Sets 0 speed on channel 1

The following follows the guide

https://github.com/dusty-nv/jetbot_ros

Install ROS Medolic. Now put into ros-melodic-install.sh

sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list' sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654 sudo apt-get update sudo apt-get -y install ros-melodic-ros-base sudo rosdep init rosdep update sudo sh -c 'echo "source /opt/ros/melodic/setup.bash" >> ~/.bashrc' source ~/.bashrc sudo apt-get -y install python-rosinstall python-rosinstall-generator python-wstool build-essential

Install Adafruit libraries

sudo apt-get -y install python-pip pip install Adafruit-MotorHAT Adafruit-SSD1306 sudo usermod -aG i2c jetbot sudo reboot

Create Catkin workspace

mkdir -p ~/workspace/catkin_ws/src cd ~/workspace/catkin_ws catkin_make sudo sh -c 'echo "source ~/workspace/catkin_ws/devel/setup.bash" >> ~/.bashrc'

Build Jetson inference. Part of jetson-inference-install.sh

sudo apt-get -y install git cmake qt4-qmake libqt4-dev libglew-dev cd ~/workspace git clone -b onnx https://github.com/dusty-nv/jetson-inference cd jetson-inference git submodule update --init mkdir build cd build cmake ../ make sudo make install

Build ros-deep-learning. Part of ros-deep-learning-install.sh

sudo apt-get -y install ros-melodic-vision-msgs ros-melodic-image-transport ros-melodic-image-publisher cd ~/workspace/catkin_ws/src git clone https://github.com/dusty-nv/ros_deep_learning cd ../ catkin_make

Build Jetbot ROS. Part of jetbos-ros-install.sh

cd ~/workspace/catkin_ws/src git clone https://github.com/dusty-nv/jetbot_ros cd ../ catkin_make

Confirm that jetbot_ros can be found

rospack find jetbot_ros

Guide stopped

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Trying for myself

sudo apt-get -y install git build-essential python-dev

cd ~/Documents

git clone https://github.com/adafruit/Adafruit_Python_PCA9685.git

cd Adafruit_Python_PCA9685

sudo python setup.py install

Install servokit

https://www.jetsonhacks.com/2019/07/22/jetson-nano-using-i2c/

cd ~/Documents

git clone https://github.com/JetsonHacksNano/ServoKit.git

cd ServoKit

chmod +x installServoKit.sh

sudo ./installServoKit.sh