ATTENTION: This README is poorly written. This Project is a Prototype, so this file just contains some notes for myself... If you want to use something from this Repository, but you dont understand how: Contact me and i'll write a more useful README or a explanation for you then.

dust-sensor

PPD42 -> Raspberry Pi -> HTTP (WiFi/Flask)

Raspberry PI 2

• Install Raspian

Network Configuration

• Plug-In a USB-WiFi Dongle that works with the Raspberry PI
• Edit /etc/network/interfaces to configure a static ip (And a low-prio route if both interfaces - eth0 and wlan0 - are connected):

...
allow-hotplug wlan0
iface wlan0 inet static
    address 192.168.43.50
    netmask 255.255.255.0
    post-up route add default gw 192.168.43.1 metric 500
    pre-down route del default gw 192.168.43.1
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

• Edit /etc/wpa_supplicant/wpa_supplicant.conf to configure the WiFi:

...
network={
    ssid="xxx"
    psk="xxx"
}

• Configure a static DNS-Server in /etc/resolv.conf.head:

nameserver 8.8.8.8

• Disable DHCP for wlan0 in /etc/dhcpcd.conf:

denyinterfaces wlan0

Timezone

• Set the correct timezone with: sudo dpkg-reconfigure tzdata

Supervisord

• Install: sudo apt-get install supervisor
• create config /etc/supervisor/conf.d/dustsensor.conf:

[program:dustsensor]
command=/home/pi/dustsensor/serve.py
autostart=true
autorestart=true
stderr_logfile=/home/pi/dustsensor/serve.stderr
stdout_logfile=/home/pi/dustsensor/serve.stdout

• sudo systemctl enable supervisor
• sudo systemctl start supervisor
• sudo supervisorctl reread
• sudo supervisorctl update

PPD42

• Compile dustsensor.c (described in the file itself)