4 layers70 × 70 mm
2 layers64 × 55 mm
Gpio expander
steinkohl/gpio-expander-pcb- Size
- 64 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 82
- Pads
- 359
- Tracks, vias
- 311, 308
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Apr 2025
- Updated
- 26 May 2025
Overview
Gpio expander is an open-source printed circuit board by steinkohl, from the steinkohl/gpio-expander-pcb repository on GitHub. It is a 2-layer board of 64 × 55 mm with 39 parts on 82 nets, routed with 311 tracks and 308 vias.
It is built around the TPS4H160AQPWPRQ1. Its parts include 16 diodes, 6 connectors, 5 ICs, 4 resistors and 1 capacitor.
Main components
1Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 60V 1A | Diode_SMD:D_SOD-323_HandSoldering | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 4 | Conn_01x06 | Connector_Samtec_HPM_THT:Samtec_HPM-06-05-x-S_Straight_1x06_Pitch5.08mm | J2, J3, J4, J5 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 4 | R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4 |
| 4 | TPS4H160AQPWPRQ1 | footprints:IC_TPS4H160AQPWPRQ1 | U1, U2, U3, U4 |
| 3 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3 |
| 1 | C | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | Conn_01x04 | Connector_Samtec_HPM_THT:Samtec_HPM-04-05-x-S_Straight_1x04_Pitch5.08mm | J6 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | MCP23017T-E_SO | footprints:SOIC127P1030X265-28N | U5 |
Questions
How big is the Gpio expander PCB?
It measures 64 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Gpio expander use?
39 parts, built around the TPS4H160AQPWPRQ1. 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 Gpio expander KiCad files?
From the steinkohl/gpio-expander-pcb repository on GitHub, at the commit this page was made from: the board is gpio-expander.kicad_pcb and its schematic gpio-expander.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gpio expander design in my own project?
Its repository states no licence, so its author keeps all rights: ask steinkohl before reusing the design.
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