4 layers83.1 × 92.5 mm
2 layers20.3 × 33 mm
Gpioexp
lbthomsen/AW9523BAW9523B GPIO Expander Breakout Board and Library
- Size
- 20.3 × 33 mm
- Copper layers
- 2
- Thickness
- 1.2 mm
- Parts
- 9
- Nets
- 24
- Pads
- 67
- Tracks, vias
- 114, 22
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 Apr 2022
- Updated
- 30 Apr 2022
Overview
Gpioexp is an open-source printed circuit board by lbthomsen, from the lbthomsen/AW9523B repository on GitHub, published under the MIT licence. It is a 2-layer board of 20.3 × 33 mm with 9 parts on 24 nets, routed with 114 tracks and 22 vias.
It is built around the AW9523BTQR. Its parts include 2 capacitors, 2 resistors, 2 connectors and 1 IC.
Main components
1README
README.mdAW9523B
AW9523B GPIO Expander Breakout Board and Library
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J1, J2 |
| 2 | ~ | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm | JP1, JP2 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | AW9523B | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U1 |
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Questions
How big is the Gpioexp PCB?
It measures 20.3 × 33 mm and has 2 copper layers, 1.2 mm thick.
What parts does the Gpioexp use?
9 parts, built around the AW9523BTQR. 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 Gpioexp KiCad files?
From the lbthomsen/AW9523B repository on GitHub, at the commit this page was made from: the board is breakout/gpioexp.kicad_pcb and its schematic breakout/gpioexp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gpioexp design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).