Making a Handheld game

I bought this tiny display from Adafruit: First thing I did was breadboard a circuit to make sure it worked and I could use it.

Board design

I was thinking along the lines of “Game Boy Micro:” . I spent an evening coming up with this design in Eagle. In order for me to make it here, it needs to be single-layer, with nice fat traces and large pads. Handily there’s an Eagle design rules file that works perfectly: The middle area is approximately what will be covered by the screen. I put the chip underneath it: an ATMega328, same chip the Arduino uses. The stuff below the chip is the crystal, so I can run it at a blazing 16 MHz instead of the 8 that the internal clock supports. I could have added stuff to program the chip in-system, too, but I went to bed instead.

Making a Handheld game


Now that I have a board design, time to make it. I used a Shapeoko CNC mill to carve it out of a sheet of copper-clad board. If you decide to try this yourself, BE VERY CAREFUL! Not all copper-clad can be safely milled, because most of it is made of fiberglass (don’t breathe that). I got this stuff from Inventables:


Here’s a close-up shot of the engraving. I use a 30 degree V bit from, cutting half a millimeter deep. It kicks up a minor amount of dust and makes everything smell coppery. This part took about two hours. I left it alone to do its thing, coming back in every 15 minutes or so to shop-vac away the dust and make sure nothing had caught on fire. But it’s not too likely to get stuck milling half a mm deep, so it’s safe (ish) to leave it alone.


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About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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