42 lines
1.6 KiB
Markdown
42 lines
1.6 KiB
Markdown
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---
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title: PCB LED hoop earring project
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date: 2024-01-02
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---
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## LED Hoops
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### What?
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First, a blog post by [mitxela](https://mitxela.com) came upon my eyes, and piqued my interest.
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Inspired by the [industrial piercing](https://mitxela.com/projects/scaffold) and the electronics that went into it, I though if other pieces of jewelry can be made with electronics (they can, it was specifically a question if my measly hands could craft them).
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Since for the first time, I didn't want to experiment with absolute microscopic sizes, I decided that a 4 cm hoop was an adequate project to attempt.
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![schematic_kicad_image](img/led_hoop/schematic.png =800x)
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An Attiny 24/44/84A can be used, I went with a -M variant, since it is slightly larger then the -MM variant, by a whole mm, which I assume will be easier to solder.
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Placing them all in a nice hoop looking pcb, we obtain this:
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![pcb_kicad_image](/assets/img/led_hoop/pcb.svg)
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The test version comes with ISP pins for debugging and programming the chip when it's already installed.
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0603 LED's were chosen for the same reason, they are small enough to be not that noticeable, but large enough to be not an incredible pain to work with.
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### Why??
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It looked and sounded fun, my only previous projects related to PCB production before this was edition a split [Sweep](https://github.com/davidphilipbarr/Sweep) keyboard.
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And so I did.
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### Cool. What now?
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You can take your chance and go to [the git repository](https://git.technoduck.me/technoduck/led_hoop) for the project, `git pull`, and try your own luck.
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Batteries not included.
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