Black Box

An application to record measurements from three sensors:

GPS
Temperature
Humidity
Air Quality

Run

bb.sh path/to/log/directory

Prerequisites

Linux system
Python 3.7 or higher setup with VENV support
make and wireless-tools must be installed

sudo apt install make wireless-tools

Setup

Application

Once all prerequisites are installed a command can be run to setup the environment.

make setup

Pi Temp & Humid

sudo apt-get install libgpiod2

Pi GPS

Steps are from https://sparklers-the-makers.github.io/blog/robotics/use-neo-6m-module-with-raspberry-pi/

Setup Pi boot commands

sudo vim /boot/config.txt

At the end of the file add the follwing lines:

dtparam=spi=on
dtoverlay=pi3-disable-bt
core_freq=250
enable_uart=1
force_turbo=1

Turn off UART as a serial console

sudo nano /boot/cmdline.txt

Delete everything and replace with

dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles

Finally

sudo reboot

Check data is coming from the GPS module

sudo cat /dev/ttyAMA0

Check which service serial0 is linked too

ls -l /dev

Command probably either

sudo systemctl stop serial-getty@ttyAMA0.service
sudo systemctl disable serial-getty@ttyAMA0.service

sudo systemctl stop serial-getty@ttyS0.service
sudo systemctl disable serial-getty@ttyS0.service

GCP setup

https://cloud.google.com/storage/docs/gsutil_install#deb

mkdir /home/volvo/blackbox mkdir /home/volvo/blackbox/log mkdir /home/volvo/blackbox/cold

Testing

To test the code is up to standard

make setup_dev
make test

bill2bill/blackbox