2 layers156.2 × 168.9 mm
LPC176x MultiFunction
RobertPHeller/RPi-RRCircuits
A collection of circuit designs for various MCUs, not just Raspberry Pis relating to Model Railroading
236 parts24
2 layers125.7 × 47 mm
SPILEDDriverAddOn
RobertPHeller/RPi-RRCircuits24A collection of circuit designs for various MCUs, not just Raspberry Pis relating to Model Railroading
- Size
- 125.7 × 47 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 76
- Pads
- 196
- Tracks, vias
- 249, 38
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 18 Dec 2016
- Updated
- 18 Jan 2026
Overview
SPILEDDriverAddOn is an open-source printed circuit board by RobertPHeller, from the RobertPHeller/RPi-RRCircuits repository on GitHub. It is a 2-layer board of 125.7 × 47 mm with 21 parts on 76 nets, routed with 249 tracks and 38 vias.
It is built around the ULN2803A. Its parts include 8 ICs, 5 connectors and 4 capacitors. It belongs with the ESP32 boards of this library.
Main components
1README
16LEDDriver23017SMD/README.md16LEDDriver23017SMD
This is a SMD variant of 16DriverOutputHAT.
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | .47uf | C1 | C1, C2, C3, C4 |
| 4 | 74HCT595N | DIP-16__300 | U1, U3, U5, U7 |
| 4 | MountingHole_2-5mm_RevA_Date21Jun2010 | MountingHole_2-5mm_RevA_Date21Jun2010 | MH, MH, MH, MH |
| 4 | ULN2803A | DIP-18__300 | U2, U4, U6, U8 |
| 3 | 0 1 2 3 4 5 6 7 D + | ScrewTerm_2.54-10 | P3, P4, P5 |
| 1 | 0 1 2 3 4 5 6 7 D + | ScrewTerm_2.54-10 | P2 |
| 1 | SPI Expansion | pin_strip_8-90 | P1 |
Questions
How big is the SPILEDDriverAddOn PCB?
It measures 125.7 × 47 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SPILEDDriverAddOn use?
21 parts, built around the ULN2803A. 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 SPILEDDriverAddOn KiCad files?
From the RobertPHeller/RPi-RRCircuits repository on GitHub, at the commit this page was made from: the board is SPILEDDriverAddOn/SPILEDDriverAddOn.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SPILEDDriverAddOn design in my own project?
Its repository states no licence, so its author keeps all rights: ask RobertPHeller before reusing the design.
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