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Setup Development Environment
In this tutorial you'll be guided step by step in the building and setup of CoderBot, from ground up to the fully working evironment, directly from source.
It is composed in four "macro-steps": Preparation of the Machine, Preparation of the Environment, Installation of the Core and Configuration. The first macro-step is composed in two mutually exclusive options: Preparation of the Virtual Machine (qemu) and Preparation of the Physical Machine (Raspberry Pi).
Note: The VM option is for testing and development purposes only.
Click here for the tutorial (incomplete at the moment)
sudo dd bs=4M if=/dev/mmcblk0 of=2018-04-18-raspbian-stretch-lite.img
nano /media/username/boot/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=IT
network={
ssid="networkName"
psk="networkPassword"
key_mgmt=WPA-PSK
}
touch /media/username/boot/ssh
sudo nano /media/username/rootfs/etc/dhcpcd.conf
auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
arp -a
ssh pi@ipAddress -p raspberry
Update Raspbian:
sudo apt update && sudo apt upgrade
Update the Firmware:
sudo apt-get install rpi-update && sudo rpi-update
If /boot/config.txt does not exists:
touch /media/mdog/boot/config.txt
else:
nano /media/mdog/boot/config.txt
Add or, if present, modify these parameters to this:
# Enable audio (loads snd_bcm2835)
dtparam=audio=on
# Gives 128MB of memory to the GPU
gpu_mem=128
# Enable camera
start_x=1
# Disable camera LED (optional)
#disable_camera_led=1
References:
- https://raspberrypi.stackexchange.com/questions/14229/how-can-i-enable-the-camera-without-using-raspi-config
- https://www.raspberrypi.org/forums/viewtopic.php?t=65696&p=495332
- https://github.com/asb/raspi-config/blob/master/raspi-config
With the raspy point the camera to some object and take a picture with the following command:
raspistill -v -o test.jpg
Check if the file test.jpg has been created typing the folowing command:
ls
To be 100% sure that the camera works we have to see the picture we've just shot. We can't do that directly from the terminal, so another option is to download and open it to our main system. On *nix systems:
scp [email protected]:test.jpg ~
On Windows:
pscp.exe username@remoteHost:test.jpg d:\
References:
- https://www.raspberrypi.org/documentation/configuration/camera.md
- https://stackoverflow.com/questions/30553428/copying-files-from-server-to-local-computer-using-ssh
sudo apt-get install pigpio python-pigpio python3-pigpio
References:
To automate running the daemon at boot time, run:
sudo systemctl enable pigpiod
References:
reboot
Check if pigpiod is running:
sudo service pigpiod status
Open:
sudo nano /etc/apt/sources.list
Decomment this line:
deb-src http://raspbian.raspberrypi.org/raspbian/ stretch main contrib non-free rpi
Update:
sudo apt-get update
References:
Execute:
amixer cset numid=3 1
Edit file asound.conf
sudo nano /etc/asound.conf
add the following:
pcm.!default {
type hw
card 0
}
ctl.!default {
type hw
card 0
}
Create file /etc/modprobe.d/alsa-base.conf
sudo nano /etc/modprobe.d/alsa-base.conf
With the following content:
options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd_usb_audio,snd_bcm2835
Install pyaudio and espeak (text to speech):
sudo apt-get install python-pyaudio espeak
Reboot and test with this command:
espeak -ven+f3 -k5 -s150 "I've just picked up a fault in the AE35 unit"
Download and execute the script:
sudo wget http://goo.gl/dANpKr -O isgh.sh && sudo bash isgh.sh
Install picamera, PIL, opencv:
sudo apt-get install python-picamera python-pil python-opencv
Install pip:
sudo apt-get install python-pip
Install Flask:
sudo pip install Flask
Stuff...