2 layers126.6 × 21.4 mm
ADBv2
mattchesters/zmk-apple-desktop-bus-keyboard
ZMK shield for Apple Desktop Bus Keyboard
17 parts168MIT
4 layers62 × 61 mm
Switchero
FunkFeuer/switchero-pcbPower switching PCB for the community housing
- Size
- 62 × 61 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 47
- Nets
- 33
- Pads
- 185
- Tracks, vias
- 350, 47
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 24 Apr 2017
- Updated
- 28 May 2017
Overview
Switchero is an open-source printed circuit board by FunkFeuer, from the FunkFeuer/switchero-pcb repository on GitHub. It is a 4-layer board of 62 × 61 mm with 47 parts on 33 nets, routed with 350 tracks and 47 vias.
It is built around the MIC2505BM and MCP23017-E/SS. Its parts include 9 ICs, 8 capacitors, 7 connectors and 3 resistors.
Main components
2
MIC2505BM
SOIC-8-40℃~+85℃ 1 30mΩ 3V~7.5V Active High High Side Switch Soft-start、Under-voltage lockout、Integrated charge pump、Overcurrent Protection、Over temperature protection、Reverse current blocking SOIC-8 Power Distribution SwitchesMicrochip TechnologyPower Distribution Switches
MCP23017-E/SS
SSOP-28(5.3x10.2x0.65)-40℃~+125℃ 1.7MHz 1.8V~5.5V 16 1uA 600mV 8 8mA I2C Interrupt Output Reset function、Cascading and address extension SSOP-28 I/O Expanders ROHSMicrochip TechnologyI/O Expanders
README
README.mdswitchero
I2C controlled power switch with current and fault limiting.
Originally created by @wnagele and @oe1rfc for switching USB power supplies of embedded boards in the FunkFeuer Wien Housing.
License
All work is licensed under CC BY-SA 3.0.
Schematic and Gerbers
Gerbers of the revisions can be found in the releases. The schematics, etc. are provided in KiCad project format.
Bill of Material
The BoM is available as CSV file.
Board
The board is a 4 layer PCB and about 60x60mm.
This is a quick 3D render of the board:
Front and back of an assembled board (pardon the "questionable" soldering work):
Mounted with daisy chained I2C for the housing project:
Parts
47| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1u | Capacitors_SMD:C_0603 | C1, C2, C3, C4, C5, C6, C7, C8 |
| 8 | MIC2505 | SMD_Packages:SOIC-8-N | U2, U3, U4, U5, U6, U7, U8, U9 |
| 3 | 4.7k | Resistors_SMD:R_0603 | R1, R2, R3 |
| 1 | ADDR | Buttons_Switches_ThroughHole:SW_DIP_x3_W7.62mm_Slide | P1 |
| 1 | I2C_IN | Connectors_JST:JST_EH_B03B-EH-A_03x2.50mm_Straight | P2 |
| 1 | I2C_OUT | Connectors_JST:JST_EH_B03B-EH-A_03x2.50mm_Straight | P7 |
| 1 | INT | Connectors_JST:JST_EH_B03B-EH-A_03x2.50mm_Straight | P4 |
| 1 | MCP23017 | Housings_SSOP:SSOP-28_5.3x10.2mm_Pitch0.65mm | U1 |
| 1 | OUT1 | Terminal_Blocks:TerminalBlock_WAGO-236_2Stift_RM5mm_8pol | P6 |
| 1 | OUT2 | Terminal_Blocks:TerminalBlock_WAGO-236_2Stift_RM5mm_8pol | P5 |
| 1 | PWR | w_conn_pc:conn_hdd_15-24-4449 | P3 |
The 27 most common of 47 parts.
Questions
How big is the Switchero PCB?
It measures 62 × 61 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Switchero use?
47 parts, built around the MIC2505BM and MCP23017-E/SS. 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 Switchero KiCad files?
From the FunkFeuer/switchero-pcb repository on GitHub, at the commit this page was made from: the board is switchero.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Switchero design in my own project?
Its repository states no licence, so its author keeps all rights: ask FunkFeuer before reusing the design.
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