4 layers150 × 100 mm ECE145Mastermind, the printed circuit board in 3D

ECE145Mastermind

Size: 150 × 100 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 122
Nets: 136
Pads: 507
Tracks, vias: 885, 177
Pours: 2
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 4 Apr 2026
Updated: 8 May 2026

Overview

ECE145Mastermind is an open-source printed circuit board by TealShirt6, from the TealShirt6/MastermindPCB repository on GitHub. It is a 4-layer board of 150 × 100 mm with 122 parts on 136 nets, routed with 885 tracks and 177 vias.

It is built around the LM324, LM358 and 74HCT00D, with the 74LS194PC, 74HCT04D and 74HCT74D among its other parts. Its parts include 40 resistors, 24 ICs, 17 connectors, 14 capacitors and 9 diodes.

Main components

Parts

122

Qty	Value	Footprint	References
22	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R2, R3, R10, R11, R14, R15, R18, R19, R22, R23, R25, R26, R27, R28, R29, R30 +6
16	Conn_01x01_Socket	Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical	J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16, J17
10	.1u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1, C2, C3, C4, C5, C6, C8, C9, C12, C14
8	200k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R9, R12, R13, R16, R17, R20, R21, R24
6	1k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R5, R34, R36, R38, R40
4	2.2k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R33, R35, R37, R39
4	Red LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D3, D5, D7, D9
4	White LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D2, D4, D6, D8
3	74HCT00	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U2, U22, U24
3	74LS194	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U4, U7, U11
2	.01u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C11, C13
2	10u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C7, C10
2	4053	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U10, U12
2	74LS08	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U1, U19
2	74LS73	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U3, U6
2	LM324	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U17, U18
1	40106	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U14
1	4051	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U13
1	74HCT04	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U9
1	74HCT74	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U23
1	74LS139	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U8
1	74LS148	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U5
1	74LS161	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U21
1	Clk	TestPoint:TestPoint_Pad_1.5x1.5mm	TP7
1	Conn_01x02_Socket	Connector_BarrelJack:BarrelJack_Horizontal	J1
1	LED	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1
1	LM358	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U15
1	LM555xN	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U20
1	LM7805_TO220	Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown	U16
1	M	TestPoint:TestPoint_Pad_1.5x1.5mm	TP8
1	NMOS	Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown	Q1
1	Out1	TestPoint:TestPoint_Pad_1.5x1.5mm	TP1
1	Out2	TestPoint:TestPoint_Pad_1.5x1.5mm	TP2
1	Out3	TestPoint:TestPoint_Pad_1.5x1.5mm	TP3
1	Out4	TestPoint:TestPoint_Pad_1.5x1.5mm	TP4
1	P	TestPoint:TestPoint_Pad_1.5x1.5mm	TP9
1	S0	TestPoint:TestPoint_Pad_1.5x1.5mm	TP5
1	S1	TestPoint:TestPoint_Pad_1.5x1.5mm	TP6
1	SW_Push	Button_Switch_THT:SW_SPST_Omron_B3F-40xx	SW2
1	SW_SPDT	Button_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2Q	SW1

The 116 most common of 122 parts.

Questions

How big is the ECE145Mastermind PCB?

It measures 150 × 100 mm and has 4 copper layers, 1.6 mm thick.

What parts does the ECE145Mastermind use?

122 parts, built around the LM324, LM358, 74HCT00D and 74LS194PC. 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 ECE145Mastermind KiCad files?

From the TealShirt6/MastermindPCB repository on GitHub, at the commit this page was made from: the board is ECE145Mastermind.kicad_pcb and its schematic Code.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the ECE145Mastermind design in my own project?

Its repository states no licence, so its author keeps all rights: ask TealShirt6 before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/tealshirt6-mastermindpcb-ece145mastermind" title="ECE145Mastermind 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/tealshirt6-mastermindpcb-ece145mastermind.jpg" alt="ECE145Mastermind" width="1200" height="900">

A picture that opens the board, for a README

[![ECE145Mastermind](https://pcbkit.io/embed/boards/tealshirt6-mastermindpcb-ece145mastermind.jpg?size=s)](https://pcbkit.io/boards/tealshirt6-mastermindpcb-ece145mastermind)

Source

Repository: TealShirt6/MastermindPCB
Board file: ECE145Mastermind.kicad_pcb
Commit: 37f0ea4
Licence: Not stated

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