2 layers36.6 × 36.4 mm
4 layers44.5 × 34.9 mm
Eclair
upbeatcarri/eclair25Pocket device for taking quick notes, acting as a USB keyboard for PC sync etc., with custom apps samd21, tinygo
- Size
- 44.5 × 34.9 mm
- Copper layers
- 4
- Thickness
- 0.81 mm
- Parts
- 56
- Nets
- 56
- Pads
- 212
- Tracks, vias
- 372, 24
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 May 2025
- Updated
- 15 May 2025
Overview
Eclair is an open-source printed circuit board by upbeatcarri, from the upbeatcarri/eclair repository on GitHub. It is a 4-layer board of 44.5 × 34.9 mm with 56 parts on 56 nets, routed with 372 tracks and 24 vias.
It is built around the ATSAMD21E18A-AF, AP2112K-3.3 and MCP73831, with the MBR130 and DMG6968UDM among its other parts. Its parts include 15 switches, 11 capacitors, 8 resistors, 5 ICs and 2 diodes. It belongs with the SAM D and SAM boards of this library.
Main components
5
ATSAMD21E18A-AF
TQFP-32(7x7)-40℃~+125℃ 1.62V~3.6V 10bit 12bit 256KB 26 32 Bit 32KB 48MHz ARM Cortex-M0+ Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
MCP73831
UncategorisedMicrochip Technology
MBR130
SOD-123-65℃~+125℃ 1 Independent 1A 30V 470mV@1A 5.5A 60uA@30V SOD-123 Schottky Diodes ROHSonsemiSchottky Diodes
DMG6968UDM
SOT-26-55℃~+150℃ 143pF 2 N-Channel 20V 29pF 6.5A 74pF 8.8nC@4.5V 850mW 900mV Common Drain SOT-26 MOSFETs ROHSDiodes IncorporatedMOSFETs
README
README.mdEclairM0
Project description and build instructions can be found on my website.
KiCad files (board) can be previewed in the web browser: https://kicanvas.org
OpenSCAD files (enclosure) can be previewed in the web browser: https://openscad.cloud/openscad/
License terms for software and hardware are present in the LICENSE.md file.
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | ~ | main:SW_SPST_EVQQ2 | S31, S32, S33, S34, S35, S36, S37, S38, S39, S40, S41, S42, S43, S44 |
| 9 | ~ | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9 |
| 6 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C21, C24, C25 |
| 5 | 1u | Capacitor_SMD:C_0805_2012Metric | C4, C11, C12, C22, C23 |
| 3 | 33K | Resistor_SMD:R_0805_2012Metric | R2, R51, R52 |
| 2 | 1K | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | 5.1K | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | MBR130 | Diode_SMD:D_1206_3216Metric | D1, D2 |
| 2 | ~ | main:MountingHole_2.2mm_M2_Pad_Small | H1, H2 |
| 1 | 560K | Resistor_SMD:R_0805_2012Metric | R21 |
| 1 | AP2112K | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | AP9101CK6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | ATSAMD21E18A-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U11 |
| 1 | DMG6968UDM | Package_TO_SOT_SMD:SOT-23-6 | Q1 |
| 1 | MCP73831 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | SW_SPDT | main:SW_SPDT_PCM12 | S1 |
| 1 | ~ | main:LP301525 | J1 |
| 1 | ~ | main:TestPoint_Pad_2.0x2.5mm | TP10 |
| 1 | ~ | main:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
| 1 | ~ | main:REX012832 | U21 |
Questions
How big is the Eclair PCB?
It measures 44.5 × 34.9 mm and has 4 copper layers, 0.81 mm thick.
What parts does the Eclair use?
56 parts, built around the ATSAMD21E18A-AF, AP2112K-3.3, MCP73831 and MBR130. 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 Eclair KiCad files?
From the upbeatcarri/eclair repository on GitHub, at the commit this page was made from: the board is hardware/board/main.kicad_pcb and its schematic hardware/board/main.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eclair design in my own project?
Its repository states no licence, so its author keeps all rights: ask upbeatcarri before reusing the design.
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