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31 lines
No EOL
4.8 KiB
Markdown
31 lines
No EOL
4.8 KiB
Markdown
# Overview
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small grid 64 clone heavily based on previous work by [hugelton/btns](https://github.com/hugelton/Btns).
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Uses a Rasperry Pi Pico Microcontroller, NeoPixel RGB LEDs (SK6812), cheap buttons and a 3d-printed case and button-overlay.
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Includes hardware and firmware support for an optional tilt-sensor.
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# Building
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It is highly recommended to order the PCB assembled from JLCPCB. That assembly will include everything other than the parts in the BOM.
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## BOM
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| Part | Quantity | Source | Required |
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|---------------------------------|----------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------|
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| PCB with components | 1 | JLCPCB, ordered with Gerber and Assembly files from latest release. Gerber: `butns-JLCPCB.zip`, BOM: `butns_bom_jlc.csv`, CPL: `butns_cpl_jlc.csv`. | yes |
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| Raspberry Pi Pico | 1 | Original Raspberry Pi Pico, or [USB-C Variant](https://de.aliexpress.com/item/1005007393927221.html) | yes | |
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| M2.5x6 Button Head Screws | 5 | [M2.5x6](https://www.aliexpress.com/item/32810852732.html) | yes |
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| Case | 1 | 3d-printed (FDM). `case.stl` contains the top and bottom half. In the image, it is printed in black PLA, 0.2mm layerheight. | yes |
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| Button Matrix | 1 | 3d-printed (FDM). Print `buttons.stl` with white PLA and 0.12mm layerheight and no infill, 2 wall lines, concentric top infill. These should guide the LEDs light well. Optional: Add `buttons-black-blockers.stl` while importing as a multi-material print and print those in black to block light from neighboring buttons | yes (black blockers optional) |
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| Button TPU Case Inlay | 1 | 3d-printed (FDM). Print with TPU, perhaps in black. Will help against rattling of the buttons in the case. | no |
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| SMD 2.54" Pin Header 1x8 Type A | 1 | [1x8 Type A](https://www.aliexpress.com/item/1005005203849802.html) | no, for tilt |
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| MPU6050 module | 1 | [MPU6050 Module](https://www.aliexpress.com/item/1005006396343851.html) | no, for tilt |
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## Assembly
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Flash microcontroller with `firmware.uf2`. Solder MCU and Pin-Header to PCB. Screw everything into the case. Done!
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Hint: The cases Top half has one specific orientation where it fits nicely: The top-screw-posts of the top-half with the larger cutoaways go to the side opposite of the USB Connector. |