Tested on Ubuntu

1. create a virtual python3 environment: virtualenv .env -p python3.7, then activate it: source .env/bin/activate
2. pip install pyserial numpy matplotlib
3. plug in the usb to your computer, then sudo chown $USER /dev/ttyUSB0

1. log power: python wattsup.py -l -o sample.log

2. plot power and energy (needs to pip install PyQt5): python plot.py sample.log sample.png