2 layers15.2 × 12.7 mm
Location
fo-am/patternmatrix2
A tangible programming language for the Raspberry Pi, built for the Penelope project
9 parts5
2 layers57.1 × 45.7 mm
Expander
fo-am/patternmatrix25A tangible programming language for the Raspberry Pi, built for the Penelope project
- Size
- 57.1 × 45.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 47
- Pads
- 130
- Tracks, vias
- 419, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 31 May 2017
- Updated
- 22 Feb 2022
Overview
Expander is an open-source printed circuit board by fo-am, from the fo-am/patternmatrix2 repository on GitHub. It is a 2-layer board of 57.1 × 45.7 mm with 17 parts on 47 nets, routed with 419 tracks and 0 vias.
It is built around the MCP23017-E/SS. Its parts include 8 connectors, 2 ICs, 1 capacitor, 1 resistor and 1 diode.
Main components
1Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | CONN_02X03 | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | J2, J3, J5, J6 |
| 3 | 1pin | , , | |
| 2 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | J1, J8 |
| 2 | CONN_02X08 | Pin_Headers:Pin_Header_Straight_2x08_Pitch2.54mm | J4, J7 |
| 2 | MCP23017 | Housings_DIP:DIP-28_W7.62mm | IC1, IC2 |
| 1 | Connectors:1pin | ||
| 1 | C | Capacitors_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | LED | LEDs:LED_D3.0mm | D1 |
| 1 | R | Resistors_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
Questions
How big is the Expander PCB?
It measures 57.1 × 45.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Expander use?
17 parts, built around the 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 Expander KiCad files?
From the fo-am/patternmatrix2 repository on GitHub, at the commit this page was made from: the board is hardware/kicad/i2c-expander/expander.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Expander design in my own project?
Its repository states no licence, so its author keeps all rights: ask fo-am before reusing the design.
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2- 2 layers15.2 × 12.7 mm
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fo-am/patternmatrix2
A tangible programming language for the Raspberry Pi, built for the Penelope project
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