K40 laser – Part 3 – yet more 'making it work at all'!

The saga continued! My intention was to add a few bells and whistles to the K40 – a new control panel with temperature indicators for the inflow and outflow of water from the laser, a flow indicator, a voltmeter showing the voltage across the potentiometer controlling the laser power, better and safer switches for the…

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K40 laser – Part 3 – yet more 'making it work at all'!

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