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Success!

Great moment this afternoon when the Automatic Loop Controller fired up as it should. Happy days.

Automatic Loop Controller appears to be working as expected
The Automatic Loop Controller PCB and display

When I first fired it up, after loading up the Arduino program, all I could see was a dull green glow on the screen. It wasn’t until I remembered a comment from another builder about adjusting the potentiometer on the PCB that controls the LCD contrast.

It was a great relief that my slow and deliberate build – double checking all component values and joints – paid off. Next step is to build the SWR bridge and connect to the stepper motor on the loop.


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  • Matt W1MST, Managing Editor