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Testing switching board direct control from the Keithley 2450 Digital I/O

As switching systems tend to be super expensive I decided to build my own for a fraction of the price.

Some time ago I wrote a small and simple command-line tool to search for @JLCPCB parts. The tool can be downloaded here: github.com/TheRandomWalk/JLC…

Lasers fired through water generate interesting and manipulable patterns. wp.me/pk3lN-1qZu