We'll present the current state of Gruessaugust the open functional test hardness we developed for testing a custom tape plotter/labelling machine at the Welcome Werkstatt community workshop.

This test hardness "mocks" a GRBL CNC Controller, an I2C display, and a keyboard. All of these devices are then connected to the device under test. This allows us to push a change to the application code, rebuild the entire Raspberry Pi operating system image and deploy and test to multiple different hardware versions. All test results, including a video that visualizes keyboard input and display output are then forwarded to the CI system.

Gruessaugust is the German version of the ruler, whose only duty is waving her hand at her people.