#run before running code: sudo pigpiod

#to install pigpio: sudo apt-get install python-pigpio python3-pigpio

#to install busio: Run the standard updates:

sudo apt-get update

sudo apt-get upgrade

and

sudo pip3 install --upgrade setuptools

If above doesn't work try

sudo apt-get install python3-pip

cd ~ sudo pip3 install --upgrade adafruit-python-shell wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/raspi-blinka.py sudo python3 raspi-blinka.py

#install LSM303 libraries: sudo pip3 install adafruit-circuitpython-lsm303-accel sudo pip3 install adafruit-circuitpython-lsm303dlh-mag

bearing.py: attemps to align servo based on heading from LSM303 accel/mag module. magnetometer.py: outputs LSM303 magnetometer readings (i.e. xyz field strength). heading.py: outputs calculated heading from LSM303 accel and mag.

If any of this code is run on a system where the adafruit LSM303 modules are not found, the "dummy" code is used to provide objects with pseudo sensor values reported.