Command-line utilities

To install the command-line utility afthermal, ensure the [tools] option is active:

$ pip install 'afthermal[tools]'

All commands support a multitude of options as command line arguments, see the --help option for each command for details.

Calibration

The printer should be calibrated each time it is connected to a different power source, as it supports a wide variety of voltages. The calibrate command of afthermal can be used for this:

$ afthermal calibrate
Connecting to printer /dev/ttyAMA0
About to calibrate your printer. [...]

Follow the instructions to determine optimum settings for printing.

Testing

To test if your printer is working correctly, the test command can be used:

$ afthermal test

This will print a few lines and a famous test image.

Printing images and QR-codes

To allow testing with your own settings/information, it is also possible to print individual images and QR codes:

$ afthermal print-qrcode 'Hello, Lena!'
$ afthermal print-image some_image_on_your_harddrive.jpg