4 layers243.8 × 171.5 mm
2 layers70.6 × 33.1 mm
Micro SD (uSD) Breakout is a device to be inserted into a micro SD card slot to breakout the pins
- Size
- 70.6 × 33.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 51
- Pads
- 159
- Tracks, vias
- 335, 22
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 30 Aug 2017
- Updated
- 15 Oct 2017
Overview
USD is an open-source printed circuit board by o7-machinehum, from the o7-machinehum/uSD_Breakout repository on GitHub. It is a 2-layer board of 70.6 × 33.1 mm with 46 parts on 51 nets, routed with 335 tracks and 22 vias.
It is built around the MCP23S17-E/SO. Its parts include 8 connectors, 6 capacitors and 2 ICs. It belongs with the interfaces and adapters boards of this library.
Main components
1README
README.mduSD Breakout
Micro SD (uSD) Breakout is a device to be inserted into a micro SD card slot to breakout the pins. This project is designed for the pinebook. But theoretically can be used for any uSD card slot.
Additional Components
| Part Number | Digi Part Number | Desc. |
|---|---|---|
| MCP23S17T-E/SS | MCP23S17T-E/SSCT-ND | I/O Expander 16 SPI 10MHz 28-SSOP |
| RTL8710 | N/A | Wifi module w/ ARM Cortex M3 |
Notes
-PCB thickness - 0.6mm
Walker (Machinehum)
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1uF | Capacitors_SMD:C_0805_HandSoldering | C2, C3, C4, C8 |
| 2 | 100nF | Capacitors_SMD:C_0805_HandSoldering | C1, C7 |
| 2 | CONN_01X01 | Via:10mil_Via | J6, J8 |
| 1 | CONN_01X02 | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J7 |
| 1 | CONN_01X08 | Arranged_Pads.pretty:uSD | J2 |
| 1 | CONN_01X08 | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | J1 |
| 1 | CONN_02X05 | Pin_Headers:Pin_Header_Straight_2x05_Pitch1.27mm | J3 |
| 1 | CONN_02X08 | Pin_Headers:Pin_Header_Angled_2x08_Pitch2.54mm | J4 |
| 1 | CONN_02X10 | Pin_Headers:Pin_Header_Angled_2x10_Pitch2.54mm | J5 |
| 1 | MCP23S17 | Housings_SSOP.pretty:SSOP-28_5.3x10.2mm_Pitch0.65mm | U1 |
| 1 | PADI_IoT_Stamp | modules:PADI_IoT_Stamp | U3 |
The 16 most common of 46 parts.
Questions
How big is the USD PCB?
It measures 70.6 × 33.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the USD use?
46 parts, built around the MCP23S17-E/SO. 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 USD KiCad files?
From the o7-machinehum/uSD_Breakout repository on GitHub, at the commit this page was made from: the board is ELEC/uSD_Project/uSD.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the USD design in my own project?
Its repository states no licence, so its author keeps all rights: ask o7-machinehum before reusing the design.
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