2 layers14 × 20 mm
2 layers68 × 14 mm
Capstone main board
ndxw/InkSync- Size
- 68 × 14 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 36
- Pads
- 82
- Tracks, vias
- 148, 12
- Pours
- 88
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 22 Nov 2024
- Updated
- 20 Apr 2025
Overview
Capstone main board is an open-source printed circuit board by ndxw, from the ndxw/InkSync repository on GitHub. It is a 2-layer board of 68 × 14 mm with 23 parts on 36 nets, routed with 148 tracks and 12 vias.
It is built around the ADXL345-EP. Its parts include 12 connectors, 5 capacitors, 4 ICs and 2 resistors.
Main components
1README
README.mdInkSync
Ink that Syncs
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C5 |
| 1 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | ADXL345 | Imported_FP:PQFN80P500X300X100-14N | U3 |
| 1 | Conn_01x07_Pin | Custom_FP:OMGS3_programming_pins | J8 |
| 1 | FORCE_V1 | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J10 |
| 1 | FORCE_V2 | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J9 |
| 1 | MFIO | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J1 |
| 1 | MISO | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J3 |
| 1 | MOSI | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J4 |
| 1 | Motion | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J2 |
| 1 | NCS | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J6 |
| 1 | OMGS3 | Imported_FP:OMGS3 | U1 |
| 1 | SCLK | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J5 |
| 1 | TPS73219DBVT | Imported_FP:DBV5_TEX | U4 |
| 1 | VBAT+ | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J11 |
| 1 | VBAT- | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J7 |
| 1 | VDDA | Connector_PinHeader_2.00mm:PinHeader_1x01_P2.00mm_Vertical | J12 |
| 1 | VREG_SOT23-5 | Imported_FP:SOT95P280X145-5N | U2 |
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Questions
How big is the Capstone main board PCB?
It measures 68 × 14 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Capstone main board use?
23 parts, built around the ADXL345-EP. 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 Capstone main board KiCad files?
From the ndxw/InkSync repository on GitHub, at the commit this page was made from: the board is pcb/capstone_main_board/capstone_main_board.kicad_pcb and its schematic pcb/PCB_Capstone_prototype_1_optical_S/PCB_Capstone_prototype_1_optical_S.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Capstone main board design in my own project?
Its repository states no licence, so its author keeps all rights: ask ndxw before reusing the design.