Above is a DIY keyswitch force-curve measuring machine by romly, as reported by the Keyboard Builders’ Digest.

The rig features a stepper motor, a load cell, OLED display and 7 buttons to operate the device and SD card to store the data.

Here is the full article in Japanese.

• It has a load cell in the moving part.
• Measures the force during the release phase too.
• The measurement data is saved in a CSV file onto the SD card.
• The zero position (measurement start) is determined automatically.
• Measurement intervals between 0.01-1mm.

Read more here.

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• Source: https://blog.adafruit.com/2024/03/11/a-diy-keyswitch-force-curve-measuring-machine-keyboards/