CircuitPython interface for DYMO postage scales.

This driver depends on:

• Adafruit CircuitPython

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-dymoscale

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-dymoscale

To install in a virtual environment in your current project:

mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-dymoscale

Initialize the scale by passing it a data pin and a pin to toggle the units button:

dymo = Scale(board.D3, board.D4)

Get the item's weight from the scale:

dymo.weight

Get the item's units from the scale:

dymo.units

To toggle between units (simulate a button press):

dymo.toggle_unit_button(switch_unit=True)

To toggle the unit button, but preserve the unit displayed:

dymo.toggle_unit_button()

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

To build this library locally you'll need to install the circuitpython-build-tools package.

python3 -m venv .env source .env/bin/activate pip install circuitpython-build-tools

Once installed, make sure you are in the virtual environment:

source .env/bin/activate

Then run the build:

circuitpython-build-bundles --filename_prefix adafruit-circuitpython-dymoscale --library_location .

Sphinx is used to build the documentation based on rST files and comments in the code. First, install dependencies (feel free to reuse the virtual environment from above):

python3 -m venv .env source .env/bin/activate pip install Sphinx sphinx-rtd-theme

Now, once you have the virtual environment activated:

cd docs sphinx-build -E -W -b html . _build/html

This will output the documentation to docs/_build/html. Open the index.html in your browser to view them. It will also (due to -W) error out on any warning like Travis will. This is a good way to locally verify it will pass.