I have friend who was going to spend $30 on a 1.5V output wall wart. I told her I would build a simple regulator instead. I overcomplicated it by printing a 3D printed box, other than that it is pretty simple.
I came up with this...
R2 is a 500Ω, which makes it adjustable from 1.25V to 6.46V.
Here is the box I made...
And the final product is very unimpressive. But then, so is this project.
I have included the 3D print files. The first batch was a bit off, so I had to reprint the bottom, which is included.
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