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An STM32 dev board complete with VGA out

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Kacman62/ZooomVGA

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800b1ea · · Nov 23, 2025

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ZooomVGA

An STM32 dev board complete with VGA out

Untitled design(5)

The Idea

I've been spending a lot of time on software recently and I wanted to do another hardware project. After browsing the Hack CLub slack, I saw there was a zoom call for Blueprint, the hardware program and I decided to join in. The theme was a Trace Race, where you try to make a board in the shortest amount of time. Just an hour before I saw a VGA library for the exact same STM32 module in the challenge and I knew what my proejct was going to be. The schematic was pretty quick to put together, using a USB C port, an ASM power regulator, the STM32F103C8, a Crystal Oscillator and the VGA port. After getting it reviewed by Kai, and improving it a little bit I moved onto the board in about an hour and a half. The board was a little harder, the VGA port is bigger than the width of a breadboard so I had to flange it out a little. But after aligning everything I started routing the pins. This was a lot harder, I put the MCU off center to get both the USB lines and the crystal to be close to it, but this caused the left side to be very cramped and a pain to route. After 2 hours of painful routing, and another half hour of polish, I finished the entire board in 4 hours. I decided on the name ZooomVGA because this is the fastest I've designed a project, and it was created mainly on the Zoom call.

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The rest of the Owl

I then created a Logo for the board, imporoved the silkscreen, added my logo and exported it to JLCPCB, coming in at around $15 with the stencil and shipping. While making the BOM i noticed a slight error with the VGA port, so I changed it to a female connector, did some minor rerouting and fixed the error. The rest of the components are from JLCPCB and cost $20, for a $35 total (slightly lower for me, becuase I ahve LEDS, Resistors, and Capacitors, but should be very similar for you))

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