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

Works with Grayhill Series 56 rotary switches.
RotaryVoltageDivider is an open-source printed circuit board by corygrant, from the corygrant/RotaryVoltageDivider repository on GitHub, published under the MIT licence. It is a 2-layer board of 17 × 4.8 mm with 15 parts on 15 nets, routed with 51 tracks and 1 via.
Its parts include 13 resistors, 1 connector and 1 switch.
Works with Grayhill Series 56 rotary switches.
Tested: 56DP30-01-1-AJN
Requires 13x 0805 1K resistors and/or 0R resistors (depending on number of positions)
| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 1K | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 |
| 1 | Conn_01x03 | Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical | J1 |
| 1 | SW_Rotary12 | Grayhill_Rotary_Switch:56P30-01-1-XXN | SW1 |

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

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It measures 17 × 4.8 mm and has 2 copper layers, 1.6 mm thick.
15 parts. 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 corygrant/RotaryVoltageDivider repository on GitHub, at the commit this page was made from: the board is RotaryVoltageDivider/RotaryVoltageDivider.kicad_pcb and its schematic RotaryVoltageDivider/RotaryVoltageDivider.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).