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2 layers165 × 127 mmMotherboard, the printed circuit board in 3D

Controller software for christmas train at Dagli'Brugsen Stjær

Size
165 × 127 mm
Copper layers
2
Thickness
1.6 mm
Parts
75
Nets
87
Pads
242
Tracks, vias
372, 228
Pours
3
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
21 Oct 2019
Updated
5 Dec 2025

Overview

Motherboard is an open-source printed circuit board by slimcdk, from the slimcdk/sdb-xmas-train repository on GitHub. It is a 2-layer board of 165 × 127 mm with 75 parts on 87 nets, routed with 372 tracks and 228 vias.

It is built around the 74HCT125PW and TDA2003. Its parts include 21 resistors, 20 connectors, 18 capacitors, 7 diodes and 3 ICs. It belongs with the computers and single-board computers boards of this library.

Main components

2

README

README.md

Stjær Dagli'Brugsens juletog

Normalize audio

bash
$ pip3 install ffmpeg-normalize
$ cd audio
audio$ ffmpeg-normalize -fp -pr --audio-codec libmp3lame -ext mp3 **/*.mp3 --output-folder normalized

Parts

75
QtyValueFootprintReferences
7?Resistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR1, R2, R4, R18, R21, R24, R25
7LEDLED_SMD:LED_1210_3225Metric_Pad1.42x2.65mm_HandSolderD2, D3, D4, D5, D6, D7, D9
510KResistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR5, R6, R16, R19, R22
41000µFCapacitor_THT:CP_Radial_D10.0mm_P5.00mmC10, C12, C13, C14
4100nFCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC9, C11, C15, C16
410µFCapacitor_THT:CP_Radial_D6.3mm_P2.50mmC1, C2, C3, C4
4Conn_01x02_FemaleTerminalBlock:TerminalBlock_bornier-2_P5.08mmJ8, J10, J11, J16
3Conn_01x03_MaleConnector:FanPinHeader_1x03_P2.54mm_VerticalJ12, J13, J14
21000µFCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC17, C18
2100RResistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR7, R8
210KPotentiometer_SMD:Potentiometer_Bourns_3314J_VerticalRV1, RV2
21RResistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR13, R14
2470RResistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR9, R11
2470µFCapacitor_THT:CP_Radial_D10.0mm_P5.00mmC6, C8
24R7Resistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR10, R12
28n2Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC5, C7
2Conn_01x01_FemaleConnector_Wire:SolderWirePad_1x01_Drill2.5mmJ18, J19
2Conn_01x03_MaleConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ2, J17
2Conn_01x05_FemaleConnector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_VerticalJ6, J7
2Conn_01x06_FemaleConnector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_VerticalJ5, J15
2TDA2003Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_VerticalU1, U2
2TRANSF5Local_Transformer_Audio:MURATA_DA10XJ_Audo_TransformerTR1, TR2
15.1KResistor_SMD:R_1210_3225Metric_Pad1.42x2.65mm_HandSolderR17
174HCT125Package_DIP:DIP-14_W7.62mm_Socket_LongPadsU3
1Conn_01x03_FemaleTerminalBlock:TerminalBlock_bornier-3_P5.08mmJ9
1Conn_01x04_FemaleConnector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ1
1Conn_01x05_FemaleTerminalBlock:TerminalBlock_bornier-5_P5.08mmJ3
1Conn_01x05_FemaleConnector_TE-Connectivity:TE_826576-5_1x05_P3.96mm_VerticalJ4
1Conn_02x20_Odd_EvenConnector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_VerticalP1

The 73 most common of 75 parts.

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Questions

How big is the Motherboard PCB?

It measures 165 × 127 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Motherboard use?

75 parts, built around the 74HCT125PW and TDA2003. 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 Motherboard KiCad files?

From the slimcdk/sdb-xmas-train repository on GitHub, at the commit this page was made from: the board is hardware/motherboard/motherboard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Motherboard design in my own project?

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