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2 layers51.5 × 96.5 mmThreeLamp 5x5 Panel, the printed circuit board in 3D

ThreeLamp 5x5 Panel

RobertPHeller/SignalTargets

Signal Target SMD LED PCBs

Full screenGitHub.kicad_pcb
Size
51.5 × 96.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
715
Nets
100
Pads
790
Tracks, vias
300, 0
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
7 Feb 2026
Updated
10 Feb 2026

Overview

ThreeLamp 5x5 Panel is an open-source printed circuit board by RobertPHeller, from the RobertPHeller/SignalTargets repository on GitHub. It is a 2-layer board of 51.5 × 96.5 mm with 715 parts on 100 nets, routed with 300 tracks and 0 vias.

It is built around the AA3021ES and AA3021YS.

Main components

2

README

README.md

SignalTargets

These are typical North American signal targets. Included is a FreeCAD macro file (Python code) to create the 3D printable heads, as well as PCBs containing SMD LEDs to light the signals. Not included are mounting materials: masts for single signals or bridges for groups of signals.

Files:

  • 5x5_panel.json 5 by 5 panel spec. used as input to KiKit to create the panelized PCBs.
  • OneLampR_5x5_Panel.kicad_pcb 5x5 panel of single lamp (Red) signal heads
  • ThreeLamp_5x5_Panel.kicad_pcb 5x5 panel of three lamp (Green-Yellow-Red) signal heads
  • TwoLampGR_5x5_Panel.kicad_pcb 5x5 panel of two lamp (Green-Red) signal heads
  • TwoLampYR_5x5_Panel.kicad_pcb 5x5 panel of two lamp (Yellow-Red) signal heads
  • SignalTargets.FCMacro FreeCAD macro (Python code) to generate STL files of the signal targets.
  • SignalTargets/SignalTargets.kicad_pro KiCAD "source" for the PCBs.

Parts

715
QtyValueFootprintReferences
540NPTHNPTHKiKit_MB_100_1, KiKit_MB_100_2, KiKit_MB_100_3, KiKit_MB_101_1, KiKit_MB_102_1, KiKit_MB_102_2, KiKit_MB_102_3, KiKit_MB_103_1, KiKit_MB_104_2, KiKit_MB_105_1, KiKit_MB_105_2, KiKit_MB_105_3, KiKit_MB_105_4, KiKit_MB_105_5, KiKit_MB_106_1, KiKit_MB_106_2 +524
25C+TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mmTP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104, TP104 +9
25GTestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mmTP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101, TP101 +9
25GREENKingBrightLEDS:LED_1208_3020metricD101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101, D101 +9
25RTestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mmTP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103, TP103 +9
25RedKingBrightLEDS:LED_1208_3020metricD103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103, D103 +9
25YTestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mmTP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102, TP102 +9
25YELLOWKingBrightLEDS:LED_1208_3020metricD102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102, D102 +9

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Questions

How big is the ThreeLamp 5x5 Panel PCB?

It measures 51.5 × 96.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the ThreeLamp 5x5 Panel use?

715 parts, built around the AA3021ES and AA3021YS. 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 ThreeLamp 5x5 Panel KiCad files?

From the RobertPHeller/SignalTargets repository on GitHub, at the commit this page was made from: the board is ThreeLamp_5x5_Panel.kicad_pcb and its schematic SignalTargets/SignalTargets.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the ThreeLamp 5x5 Panel design in my own project?

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