2 layers102 × 40 mm Sample board, the printed circuit board in 3D

Sample board

WPI's PCB Design Course

Size: 102 × 40 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 50
Nets: 74
Pads: 225
Tracks, vias: 354, 64
Pours: 3
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 21 Sep 2024
Updated: 12 Apr 2026

Overview

Sample board is an open-source printed circuit board by ieee-wpi, from the ieee-wpi/pcb repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 102 × 40 mm with 50 parts on 74 nets, routed with 354 tracks and 64 vias.

It is built around the ATMEGA32U4-AU and SK6812MINI-E. Its parts include 29 diodes, 6 capacitors, 6 resistors, 4 connectors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

sample_board/README.md

Sample Board

This folder contains the sample board for the Track 1 design. We've ordered these boards to help demonstrate what the Track 1 boards will do.

If you're in Track 1, we encourage you not to look at the sample board files, but rather come up with your own layout and routing solutions. The sample board by no means represents "the best" design for the board.

Parts

Qty	Value	Footprint	References
27	SK6812MINI	LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm	D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +11
2	100	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2
2	1uF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2, C6
2	22	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3, R4
2	22pF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3, C4
2	Conn_01x10	Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical	J1, J2
1	0.1uF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C5
1	100uF	Capacitor_SMD:CP_Elec_5x5.3	C1
1	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R5
1	16MHz	Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm	Y1
1	470	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6
1	ATmega32U4-A	Package_QFP:TQFP-44_10x10mm_P0.8mm	U1
1	ICSP	Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical	J3
1	Jumper_2_Open	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP1
1	LOGO	LOGO	G***
1	RX	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D2
1	SW_Push	Button_Switch_SMD:SW_SPST_PTS647_Sx38	SW1
1	TX	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1
1	USB_B_Micro	Connector_USB:USB_Micro-B_GCT_USB3076-30-A	J4

Questions

How big is the Sample board PCB?

It measures 102 × 40 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Sample board use?

50 parts, built around the ATMEGA32U4-AU and SK6812MINI-E. 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 Sample board KiCad files?

From the ieee-wpi/pcb repository on GitHub, at the commit this page was made from: the board is sample_board/sample_board.kicad_pcb and its schematic sample_board/sample_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Sample board design in my own project?

Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/ieee-wpi-pcb-sample-board" title="Sample board in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/ieee-wpi-pcb-sample-board.jpg" alt="Sample board" width="1200" height="900">

A picture that opens the board, for a README

[![Sample board](https://pcbkit.io/embed/boards/ieee-wpi-pcb-sample-board.jpg?size=s)](https://pcbkit.io/boards/ieee-wpi-pcb-sample-board)

Source

Repository: ieee-wpi/pcb
Board file: sample_board/sample_board.kicad_pcb
Commit: 870fca6
Homepage: pcb.wpi.edu
Licence: CC-BY-SA-4.0
Copies: 2 copies in 3 repositories

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