lukasdanckwerth/praum-monitor

praum-monitor

• praum-monitor
  • Project
  • Readings
  • GPIOs
    • Connecting RaspberryPi and MCP3008
    • GPIO distribution
  • Development
    • dev-server
  • Installation
    • Installation script (script 📃)
    • Update and install packages
    • Install samba
    • Install py-spidev lib
  • Disable display sleep
  • Autostart Firefox
  • Hide taskbar / menubar
  • Make the mouse disappear

Project

App	Description
praum-monitor	Reads sensors and provides an api.
web-app	Electron web app using Chart.js to present the sensor data.

Readings

GPIOs

Connecting RaspberryPi and MCP3008

GPIO distribution

RaspberryPi Pin	MCP3008 Pin	Device
Pin 12 / GPIO 18		Sound Sensor V2 (D0)
Pin 4 / 5V		Sound Sensor V2 VCC
Pin 34		Sound Sensor V2 GND
Pin 11 / GPIO 17		traffic light l Green
Pin 13 / GPIO 27		traffic light l Yellow
Pin 15 / GPIO 22		traffic light l Red
		traffic light l GND
Pin 36 / GPIO 16		traffic light c Green
Pin 38 / GPIO 20		traffic light c Yellow
Pin 40 / GPIO 21		traffic light c Red
		traffic light c GND
Pin 37 / GPIO 26		traffic light r Green
Pin 35 / GPIO 19		traffic light r Yellow
Pin 33 / GPIO 13		traffic light r Red
		traffic light r GND
Pin 29 / GPIO 5		Piezo SIG
Pin 31 / GPIO 6		Buzzer SIG
Pin 7 / GPIO 4		Movement Sen Out
Pin 39		Movement Sen GND
Pin 4		Movement Sen VCC (5V)
Pin 32 / GPIO 12		Climate Sensor Out
Pin 30		Climate Sensor GND
Pin 2		Climate Sensor VCC (5V)
Pin		MH-Z19 V+ (5V)
Pin 6		MH-Z19 V- (GND)
Pin 22 / GPIO 25		MH-Z19 PWM (Digital Out)
Pin 16 / GPIO 23		Button

Development

dev-server

Start a local http server for development with.

python3 dev-server.py

Installation

Installation script (script 📃)

Be careful using this scripts. Always check content before running a script with sudo.

sudo /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/lukasdanckwerth/praum-monitor/main/bin/install.sh)"

Update and install packages

sudo apt-get update --assume-yes && \
sudo apt-get upgrade --assume-yes && \
sudo apt-get install --assume-yes vim git && \
sudo apt-get install --assume-yes python-dev

Expand file system "Advanced Options" -> "Expand Filesystem" and activate SPI with "Interface Options" -> "SPI".

sudo raspi-config

# or expand filesystem with
sudo raspi-config --expand-rootfs

# and enable spi interface
sudo raspi-config nonint do_spi 0

Install samba

sudo apt-get install --assume-yes samba samba-common-bin
sudo smbpasswd -a pi
# user: pi
# password: pi
sudo vim /etc/samba/smb.conf
sudo mkdir /srv/praum-monitor
sudo chown pi:pi /srv/praum-monitor
sudo chmod 777 /srv/praum-monitor

See smb.conf.

Install py-spidev lib

pushd /srv/
wget https://github.com/doceme/py-spidev/archive/master.zip -O py-spidev.zip
unzip py-spidev.zip
cd py-spidev-master
sudo python3 setup.py install
popd

Disable display sleep

# to avoid a `unable to open display` error use the following
export DISPLAY=:0

# set screen saver timeout to zero:
xset s 0

# set dpms (EnergyStar) to disabled:
xset -dpms

# verify your settings with
xset q

Autostart Firefox

Edit:

sudo vim /etc/xdg/lxsession/LXDE-pi/autostart

Hide taskbar / menubar

Edit /etc/xdg/lxsession/LXDE-pi/autostart

sudo vim /etc/xdg/lxsession/LXDE-pi/autostart

Comment the following line.

@lxpanel --profile LXDE

@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@xscreensaver -no-splash
@unclutter -idle 0.1 -root
@bash /srv/praum-monitor/bin/start-web-app.sh
#@firefox-esr --kiosk --private-window file:///home/pi/Desktop/index.html

Make the mouse disappear

To make the mouse disappear first install unclutter:

sudo apt-get install unclutter

Then add the following line to your /etc/xdg/lxsession/LXDE-pi/autostart file.

@unclutter -idle 0.1 -root