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google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

Hotswap Choc version of the Helix, a compact split ortholinear keyboard.
Helixhschoc is an open-source printed circuit board by Cipulot, from the Cipulot/helixhschoc repository on GitHub, published under the MIT licence. It is a 2-layer board of 135.2 × 94 mm with 134 parts on 90 nets, routed with 2,204 tracks and 398 vias.
It is built around the SK6812MINI-E. Its parts include 33 ICs, 33 switches, 32 diodes, 5 connectors and 4 resistors. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.

Hotswap Choc version of the Helix, a compact split ortholinear keyboard.
Original Helix keyboard was designed by Makoto Kurauchi.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 32 | D | cipulot_parts:D_SOD-123_dual_reversed | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +16 |
| 32 | SK6812mini | cipulot_parts:SK6812MINI_rev | U2, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21, U22, U23, U24 +16 |
| 32 | SW_PUSH | cipulot_parts:Kailh_socket_PG1350_reversible_LEFT_nosilkangle | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +16 |
| 9 | MountingHole | cipulot_parts:HOLE_M2_TH | H1, H2, H3, H4, H5, H6, H7, H8, H9 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R1, R2, R2 |
| 4 | MountingHole | cipulot_parts:HOLE_M2 | H10, H11, H12, H13 |
| 2 | CONN_01X01 | cipulot_parts:Pin_Small | P1, P2 |
| 2 | GND | cipulot_parts:Jumper_Small | JP4, JP11 |
| 2 | Helix_logo_small | Logos:Helix_logo_small | G***, G*** |
| 2 | LOGO | Logos:IronMan_small | G***, G*** |
| 2 | SCL | cipulot_parts:Jumper_Small | JP6, JP9 |
| 2 | SDA | cipulot_parts:Jumper_Small | JP7, JP8 |
| 2 | VCC | cipulot_parts:Jumper_Small | JP5, JP10 |
| 1 | LED | cipulot_parts:LED_Strip_Pad | P4 |
| 1 | LOGO | Logos:Single_flower_helix | G*** |
| 1 | LOGO | Logos:Double_flower_helix | G*** |
| 1 | MJ-4PP-9 | cipulot_parts:MJ-4PP-9 | J1 |
| 1 | OLED | cipulot_parts:OLED_Small | P3 |
| 1 | ProMicro | cipulot_parts:Sparkfun_Pro_Micro_reversible | U1 |
| 1 | Reset | cipulot_parts:SW_3.5x6.0_TH | SW33 |
It measures 135.2 × 94 mm and has 2 copper layers, 1.6 mm thick.
134 parts, built around the SK6812MINI-E. 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.
From the Cipulot/helixhschoc repository on GitHub, at the commit this page was made from: the board is PCB/kicad_6_hotswap_choc/helixhschoc.kicad_pcb and its schematic PCB/kicad_6_hotswap_choc/helixhschoc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
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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Circuit diagrams and firmware source code for Gboard DIY keyboards

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