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

Custom MSPM0 based development board created in KiCad
Breadboard Buddy is an open-source printed circuit board by rolo-r, from the rolo-r/Breadboard-Buddy repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 12 × 34.9 mm with 16 parts on 28 nets, routed with 147 tracks and 14 vias.
Its parts include 5 capacitors, 4 connectors, 2 resistors, 2 ICs and 1 diode.
The schematic and PCB can be viewed without installing KiCad 8.0 by using KiCanvas, an online KiCad viewer
https://kicanvas.org/?github=https%3A%2F%2Fgithub.com%2Frolo-g%2FBreadboard-Buddy
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C5, C6 |
| 2 | Conn_01x07 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J1, J2 |
| 1 | .1uF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | .47uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 47k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J3 |
| 1 | LOGO | LOGO | G*** |
| 1 | MSPM0(C/L)(11/13)0x | Package_SO:Texas_DYY0016A_TSOT-23-16_4.2x2.0mm_P0.5mm | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal | J4 |
| 1 | WHITE | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23-3 | U2 |

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It measures 12 × 34.9 mm and has 2 copper layers, 1.6 mm thick.
16 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 rolo-r/Breadboard-Buddy repository on GitHub, at the commit this page was made from: the board is Breadboard-Buddy.kicad_pcb and its schematic Breadboard-Buddy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).