this post was submitted on 19 Sep 2026
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3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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This spincoater is made for making custom circuit boards. The idea is that all boards made with this process have a 3mm mounting hole in the center.

UV curable resin is applied to both sides of a copper clad board, spun off at 3000rpm after which the speed is lowered to 300rpm and the UV light on both sides will then cure the thin layer on the board.

This is only a prototype.

The spinning mechanism is a 775 motor with a rotary encoder that is controlled by one of the PWM pins of an Arduino Nano.

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[–] dtrain@lemmy.world 3 points 1 day ago (1 children)

Whatever website your hosting this on is a fucking trap for mobile users.

Popups galore just to view the first image.

[–] ikidd@lemmy.dbzer0.com 2 points 1 day ago

I get no popups with FF mobile and ublock origin