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2 layers116.8 × 162.6 mmLPAD, the printed circuit board in 3D

Code

Size
116.8 × 162.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
33
Nets
23
Pads
85
Tracks, vias
242, 1
Pours
6
Routed
Yes
KiCad
KiCad 4
Created
9 Dec 2011
Updated
24 Aug 2026

Overview

LPAD is an open-source printed circuit board by Ehryk, from the Ehryk/ehryk.github.com repository on GitHub. It is a 2-layer board of 116.8 × 162.6 mm with 33 parts on 23 nets, routed with 242 tracks and 1 via.

Its parts include 13 switches, 6 capacitors, 4 resistors, 4 connectors and 3 inductors.

README

README.md

ehryk.github.com

This is my github pages repo, viewable at ehryk.github.io. It also has some setup files that I sync between various computers, most notably git and bash aliases.

Github Pages (/, /js, /css, /img)

  • xkcd 1288 Substitutions Bookmarklet

/linux && /git

These are the settings I sync between various computers. Update Config.bat for windows, update-config.sh for linux.

/rainmeter

Custom Rainmeter skins for GPU and CPU temps, etc.

/brian

Brian's Stuff. See more at Dr. Bird.org

Parts

33
QtyValueFootprintReferences
7#6Footprints:6-32UNC_Screw_HoleS1, S2, S3, S4, S5, S6, S7
3Footprints:Thermal_Via_NoRing, ,
3PhaseFootprints:SW_DPDT_REDSW2, SW4, SW6
22.2 μFFootprints:C_AXIAL_15x24C2, C6
2AttenuationFootprints:SW_DPDT_REDSW1, SW3
10.25 mHFootprints:ED110-2L3
10.38 mHFootprints:ED110-2L1
10.78 mHFootprints:ED110-2L2
110 μFFootprints:C_AXIAL_25x36C3
124ΩFootprints:R_WIREWOUND_100WR4
125ΩFootprints:R_WIREWOUND_25WR2
12ΩFootprints:R_WIREWOUND_25WR1
12ΩFootprints:R_WIREWOUND_100WR3
13.3 μFFootprints:C_AXIAL_15x36C1
15.6 μFFootprints:C_AXIAL_19x36C4
18.2 μFFootprints:C_AXIAL_23x36C5
1BypassFootprints:SW_SPDT_REDSW5
1INPUTFootprints:ED110-2P1
1TWEETERFootprints:ED110-2P2
1WOOFER_AFootprints:ED110-2P3
1WOOFER_BFootprints:ED110-2P4

Questions

How big is the LPAD PCB?

It measures 116.8 × 162.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the LPAD use?

33 parts. 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 LPAD KiCad files?

From the Ehryk/ehryk.github.com repository on GitHub, at the commit this page was made from: the board is Circuits/3rd Order Butterworth LPAD/LPAD.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the LPAD design in my own project?

Its repository states no licence, so its author keeps all rights: ask Ehryk before reusing the design.

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