4 layers146.6 × 136.1 mm Microwaves, the printed circuit board in 3D

Microwaves

KiCad Electronics Projects

Size: 146.6 × 136.1 mm
Copper layers: 4
Thickness: 4.69 mm
Parts: 109
Nets: 130
Pads: 472
Tracks, vias: 570, 43
Pours: 4
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 13 Jul 2022
Updated: 2 Sep 2025

Overview

Microwaves is an open-source printed circuit board by alfpedraza, from the alfpedraza/electronics repository on GitHub. It is a 4-layer board of 146.6 × 136.1 mm with 109 parts on 130 nets, routed with 570 tracks and 43 vias.

It is built around the 74HC14, NE555P and 74LS32SC, with the 74LS279P-E among its other parts. Its parts include 44 capacitors, 22 resistors, 19 ICs, 11 diodes and 2 switches. It belongs with the radio and wireless boards of this library.

Main components

README

README.md

electronics

KiCad Electronics Projects

Parts

109

Qty	Value	Footprint	References
24	100nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C14, C20, C21, C22, C23, C24, C26, C28, C30, C33, C34, C35, C36, C37, C38, C39 +8
10	1N4001	Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal	D3, D4, D10, D11, D12, D13, D14, D15, D16, D17
9	1uF	Capacitor_THT:CP_Radial_Tantal_D5.0mm_P2.50mm	C3, C6, C8, C12, C13, C16, C17, C18, C19
6	100	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R14, R30, R31, R34, R35, R36
6	74HC14	SN74LS:DIP794W45P254L1969H508Q14	U3, U6, U9, U11, U15, U18
5	10uF	Capacitor_THT:CP_Radial_Tantal_D5.0mm_P2.50mm	C9, C25, C27, C29, C31
5	Screw_Terminal_01x03	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-3-2.54_1x03_P2.54mm_Horizontal	J_BUZZER1, J_DOOR1, J_FAN1, J_LIGHT1, J_MOTOR1
4	120k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R12, R21, R29, R32
4	NE555P	Package_DIP:DIP-8_W7.62mm	U7, U8, U14, U21
3	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R10, R19, R20
3	10nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C4, C7, C10
3	74LS08	SN74LS:DIP794W45P254L1969H508Q14	U4, U13, U20
3	74LS32	SN74LS:DIP794W45P254L1969H508Q14	U5, U10, U16
2	100uF	Capacitor_THT:CP_Radial_Tantal_D5.0mm_P2.50mm	C5, C46
2	33	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R37, R38
2	4.7k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R16, R17
2	47k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R5, R18
2	74LS279	SN74LS:DIP794W45P254L1969H508Q16	U12, U19
2	FerriteBead_Small	Resistor_THT:R_Axial_DIN0614_L14.3mm_D5.7mm_P20.32mm_Horizontal	FB1, FB2
2	Screw_Terminal_01x02	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal	J_IR1, J1
1	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R15
1	1nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm	C15
1	220	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R11
1	330k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R33
1	4017	SN74LS:DIP794W45P254L1969H508Q16	U17
1	50k	Potentiometer_THT:Potentiometer_Piher_T-16L_Single_Vertical_Hole	RV2
1	LED	LED_THT:LED_D3.0mm	D2
1	SW_DIP_x08	Button_Switch_THT:SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm	SW2
1	SW_SPDT	Switches:SW_500SSP1S2M2QEA	SW3
1	Screw_Terminal_01x05	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-5-2.54_1x05_P2.54mm_Horizontal	J_CTRL1

Questions

How big is the Microwaves PCB?

It measures 146.6 × 136.1 mm and has 4 copper layers, 4.69 mm thick.

What parts does the Microwaves use?

109 parts, built around the 74HC14, NE555P, 74LS32SC and 74LS279P-E. 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 Microwaves KiCad files?

From the alfpedraza/electronics repository on GitHub, at the commit this page was made from: the board is microwaves/src/microwaves.kicad_pcb and its schematic digital-clocks/clock-clock-signal.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Microwaves design in my own project?

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

Category and platform

Radio and wireless

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/alfpedraza-electronics-microwaves" title="Microwaves 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/alfpedraza-electronics-microwaves.jpg" alt="Microwaves" width="1200" height="900">

A picture that opens the board, for a README

[![Microwaves](https://pcbkit.io/embed/boards/alfpedraza-electronics-microwaves.jpg?size=s)](https://pcbkit.io/boards/alfpedraza-electronics-microwaves)

Source

Repository: alfpedraza/electronics
Board file: microwaves/src/microwaves.kicad_pcb
Commit: 7643aed
Licence: Not stated

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