4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers69.3 × 80 mm
Hexy
sqfmi/hexy10Hexy by SQFMI
- Size
- 69.3 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 97
- Nets
- 120
- Pads
- 408
- Tracks, vias
- 469, 98
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Aug 2020
- Updated
- 22 Aug 2020
Overview
Hexy is an open-source printed circuit board by sqfmi, from the sqfmi/hexy repository on GitHub, published under the MIT licence. It is a 2-layer board of 69.3 × 80 mm with 97 parts on 120 nets, routed with 469 tracks and 98 vias.
It is built around the WS2812B. It belongs with the lEDs and displays and home automation and IoT boards of this library.
Main components
1README
README.mdHexy
Inspired by Mukesh Sankhla's HexMatrix project, this is a smaller version using 96 3.5x3.5MM RGB LEDs (WS2812B-MINI)
Hardware
All KiCad design files under MIT license
BOM
- 1 x PCB
- 96 x WS2812B-MINI
- 1 x TTGO T-DISPLAY (or any other microcontroller)
- 2 x 2.54MM SMD Pin Headers (You only need 3 pins connected i.e. DIN/VCC/GND but using a full row of 12 pins will mount more securely)
Wiring Pattern
The LEDs are laid out in a zigzag pattern:
Software
We used the FastLED library v3.3
- Set the data pin to 13 (or any other pin if you are using another microcontroller)
- Set the number of LEDs to 96
- Set the LED Chipset to WS2812B
Frame
For best visual results, 3D print the seperator grid hexy-frame.stl to keep the light from bleeding over. You will also need a piece of paper/acrylic glued on top to diffuse the light so each triangle cell looks nice and crisp hexy-diffusion.dxf
Parts
97| Qty | Value | Footprint | References |
|---|---|---|---|
| 96 | WS2812B | hexy:WS2812B-MINI | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +80 |
| 1 | TTGO_T-DISPLAY | hexy:TTGO_T-DISPLAY_SMD | TTGO T-DISPLAY |
Questions
How big is the Hexy PCB?
It measures 69.3 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hexy use?
97 parts, built around the WS2812B. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hexy KiCad files?
From the sqfmi/hexy repository on GitHub, at the commit this page was made from: the board is hexy.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hexy design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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