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2 layers114 × 74 mmTimer, the printed circuit board in 3D

Keep Talking and Nobody Explodes - Physical Edition

Size
114 × 74 mm
Copper layers
2
Thickness
1.6 mm
Parts
100
Nets
50
Pads
291
Tracks, vias
368, 110
Pours
2
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
3 Apr 2021
Updated
21 Oct 2026

Overview

Timer is an open-source printed circuit board by melair, from the melair/ktane repository on GitHub. It is a 2-layer board of 114 × 74 mm with 100 parts on 50 nets, routed with 368 tracks and 110 vias.

Its parts include 47 capacitors, 47 diodes and 1 connector.

README

README.md

Keep Talking and Nobody Explodes - Physical Version

Version Two

This is version two of my Keep Talking and Nobody Explodes physical bomb, you may refer to the version-one branch if you wish to see the first version progress.

Parts

100
QtyValueFootprintReferences
470.1uFCapacitor_SMD:C_0603_1608MetricC1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +31
47WS2812B-6028KTANE:LED_RGB_SMD_6028_2.8x3.5mm_SquareD1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +31
4MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
1InConnector_JST:JST_PH_B3B-PH-SM4-TB_1x03-1MP_P2.00mm_VerticalJ1
1LOGOKTANE:KTANEIRL-0505G***

Questions

How big is the Timer PCB?

It measures 114 × 74 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Timer use?

100 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 Timer KiCad files?

From the melair/ktane repository on GitHub, at the commit this page was made from: the board is PCB/Others/Timer/Timer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Timer design in my own project?

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

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