2 layers180.3 × 121.9 mm Hw motherboard, the printed circuit board in 3D

Hw motherboard

Automated continuity testing device

Size: 180.3 × 121.9 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 388
Nets: 311
Pads: 1,124
Tracks, vias: 1,669, 111
Pours: 5
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 20 Oct 2023
Updated: 7 May 2024

Overview

Hw motherboard is an open-source printed circuit board by mtfinding, from the mtfinding/ClickTest repository on GitHub. It is a 2-layer board of 180.3 × 121.9 mm with 388 parts on 311 nets, routed with 1,669 tracks and 111 vias.

It is built around the TCA9555PWR(UMW), SD05C.TCT and 1N4148WS. Its parts include 135 resistors, 104 diodes, 18 connectors, 16 capacitors and 7 ICs. It belongs with the computers and single-board computers boards of this library.

Main components

README

README.md

Automated Continuity Testing Device

Overview

This repository contains the finalized source-code and hardware design documents of an automated hardware-tester. The projects was created as part of bachelor-thesis and is specifically designed for the Nucleo L432KC development board in combination with a propriatory harwdare expander used at my uni FHTW)

Features

Automated Continuity Testing: The device automates the continuity testing process, reducing manual effort and increasing efficiency.
Terminal Interface: A 115200baud UART terminal is available to visulaize test-results and select from certain testing-options.
Quick-Test Button: A physical button that can be mapped to various test-actions via terminal commands.

System overview

The system consists of a single PCBA project which can be broken apart in all necessary components with only little manual THT soldering required. The main components are outlined in the image below.

Parts

388

Qty	Value	Footprint	References
97	R_0402_200	Resistor_SMD:R_0402_1005Metric	R102, R103, R104, R105, R106, R107, R108, R109, R110, R111, R112, R113, R114, R115, R116, R117 +81
96	SD05C.TCT	Diode_SMD:D_SOD-323_HandSoldering	D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112, D113, D114, D115, D116 +80
58	TestPoint_Small	TestPoint:TestPoint_Pad_D1.0mm	TP101, TP102, TP201, TP202, TP301, TP302, TP415, TP416, TP502, TP503, TP504, TP505, TP506, TP507, TP508, TP509 +42
16	0R	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R416, R417, R418, R419, R511, R512, R513, R514, R625, R626, R627, R628, R629, R630, R631, R632
11	R_0603_10k	Resistor_SMD:R_0603_1608Metric	R101, R201, R301, R302, R401, R501, R505, R507, R515, R601, R624
9	C_0603_100n	Capacitor_SMD:C_0603_1608Metric	C102, C202, C303, C304, C402, C501, C502, C602, C604
9	SnakeBite	MountingEquipment:JLC_SnakeBite_1.27mm	H705, H706, H707, H708, H709, H710, H711, H712, H714
7	C_0603_1u	Capacitor_SMD:C_0603_1608Metric	C101, C201, C301, C302, C401, C601, C603
7	LOGO	LOGO	G*, G, G, G, G, G, G**
7	TCA9555PWR	Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm	U101, U201, U301, U302, U401, U601, U602
6	PicoBlade_53047	Connector_Molex:Molex_PicoBlade_53047-0610_1x06_P1.25mm_Vertical	J701, J702, J703, J704, J705, J706
5	R_0603_1k	Resistor_SMD:R_0603_1608Metric	R508, R509, R510, R516, R517
4	1N4148WS	Diode_SMD:D_SOD-323F	D501, D502, D503, D504
4	Fiducial	Fiducial:Fiducial_1mm_Mask2mm	FID701, FID702, FID703, FID704
4	MountingHole	MountingHole:MountingHole_3.2mm_M3_Pad_Via	H701, H702, H703, H704
4	R_0603_2.2k	Resistor_SMD:R_0603_1608Metric	R502, R503, R504, R506
3	LED_Green	LED_SMD:LED_0603_1608Metric	D506, D507, D508
2	0R_DNI	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R614, R633
2	TestPoint	TestPoint:TestPoint_Keystone_5000-5004_Miniature	TP501, TP647
1	2N7000	Package_TO_SOT_THT:TO-92_Inline	Q601
1	C1_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP101
1	C1_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP102
1	C1_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP103
1	C2_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP201
1	C2_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP202
1	C2_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP203
1	C3_L_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP301
1	C3_L_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP303
1	C3_L_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP305
1	C3_R_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP302
1	C3_R_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP304
1	C3_R_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP306
1	CON_C1_L	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J101
1	CON_C1_R	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J102
1	CON_C2_L	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J201
1	CON_C2_R	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J202
1	CON_C3_L	Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical	J301
1	CON_C3_R	Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical	J302
1	CON_CTOP_L	Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical	J401
1	CON_CTOP_R	Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical	J402
1	CON_DUT_L	Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical	J601
1	CON_DUT_R	Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical	J602
1	CON_MCU_L	Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical	J501
1	CON_MCU_R	Connector_PinSocket_2.54mm:PinSocket_1x15_P2.54mm_Vertical	J502
1	LED_Red	LED_SMD:LED_0603_1608Metric	D505
1	SW_RST	Button_Switch_THT:SW_PUSH_6mm	SW501
1	SW_UI	Button_Switch_THT:SW_PUSH_6mm	SW502
1	TOP_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP401
1	TOP_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP402
1	TOP_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP403
1	ZIF_L_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP601
1	ZIF_L_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP602
1	ZIF_L_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP603
1	ZIF_R_A0	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP604
1	ZIF_R_A1	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP605
1	ZIF_R_A2	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP606

Questions

How big is the Hw motherboard PCB?

It measures 180.3 × 121.9 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Hw motherboard use?

388 parts, built around the TCA9555PWR(UMW), SD05C.TCT and 1N4148WS. 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 Hw motherboard KiCad files?

From the mtfinding/ClickTest repository on GitHub, at the commit this page was made from: the board is hw/hw_motherboard/hw_motherboard.kicad_pcb and its schematic hw/hw_motherboard/CLICK_TOP.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Hw motherboard design in my own project?

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

Category and platform

Computers and single-board computers

Topics

embedded-c embedded-systems continuity-test

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/mtfinding-clicktest" title="Hw motherboard 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/mtfinding-clicktest.jpg" alt="Hw motherboard" width="1200" height="900">

A picture that opens the board, for a README

[![Hw motherboard](https://pcbkit.io/embed/boards/mtfinding-clicktest.jpg?size=s)](https://pcbkit.io/boards/mtfinding-clicktest)

Source

Repository: mtfinding/ClickTest
Board file: hw/hw_motherboard/hw_motherboard.kicad_pcb
Commit: 36c3b07
Licence: Not stated

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