hotlouddusty

• hot: https://github.com/adafruit/Adafruit_Python_DHT
• loud: https://github.com/shichao-an/soundmeter
• dusty: https://github.com/ikalchev/py-sds011
• where: https://github.com/Knio/pynmea2, http://www.jillybunch.com/sharegps/nmea-usb-linux.html
• display: https://github.com/waveshare/e-Paper

Install

sudo apt update
sudo raspi-config # Localization Options -> Time Zone -> Change Time Zone
    sudo raspi-config # Interfacing Options -> SPI -> Enable
    sudo raspi-config # Interfacing Options -> I2C -> Enable
sudo apt install git portaudio19-dev python-dev alsa-utils libav-tools android-tools-adb screen python3-pip
    sudo apt-get install libjpeg-dev zlib1g-dev
git clone git@github.com:ssuffian/hotlouddusty.git
pip3 install -r requirements.txt 
    crontab crontab.txt

Hot

You need to install a DHT22/AM2302 temperature sensor. It is currently set up for the data pin to be on pin 23.

Audio

Go into alsa.conf and change the 0's to 1's for the following lines (defaults.ctl card 0 and defaults.pcm.card 0):

sudo vim /usr/share/alsa/alsa.conf
defaults.ctl.card 1
	defaults.pcm.card 1

Dusty

This is the module that specifically requires python3. The others could be run on python2.7, but for consistently everything is being run on python3

cd lib/py-sds011
git submodule init 
git submodule update
sudo python3 setup.py install

Where

If it is a new device, you must go on the phone and authorize the device.

Display

For the display, it is using a 2.3 inch e-Paper HAT (D). Make sure to use the correct script from its github page. I used python3 and had to update a few things, such as the font (truetype font on raspberry pi zero is /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf. There were also a few tabs vs indent issues that had to be addressed in the files. Otherwise, python main.py from the python3 folder worked.

When

sudo apt-install i2c-tools
sudo raspi-config # Then click Advanced Options, I2C, Yes, Ok, Yes, Ok, Yes

After it reboots, you have to edit the /etc/modules:

sudo vim /etc/modules

At the end of the file add the following two lines:

i2c-bcm2708
i2c-dev

Then edit /boot/config.txt and at the end of the file add/ensure the following two lines are there, then reboot:

sudo vim /boot/config.txt
dtparam=i2c1=on
dtparam=i2c_arm=on
sudo reboot

To test that it worked, look for 68 on line 60 of the output of the following command:

sudo i2cdetect -y 1

Now to set the time (make sure date returns the correct time. Requires an internet connection:

sudo bash
echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
exit
sudo hwclock -r
sudo hwclock -w

Then edit /etc/rc.local to have it do those echo commands on boot

sudo vim /etc/rc.local

BEFORE exit 0 and after all the other echo commands add the following two lines

echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
sudo hwclock -s

Then reboot and check the time:

sudo hwclock -r

Debugging

This page is helpful with debugging (and was how I figured out how to get it setup.

sudo apt install gpsd netcat

Other

To save crontab to file:

crontab -l > crontab.txt

To load crontab from file:

crontab crontab.txt

Vim

sudo apt install vim
sudo update-alternatives --config editor 

Select vim.basic