2 layers124.5 × 124.5 mm Qs-80-sbc, the printed circuit board in 3D

Qs-80-sbc

QuickSilver-80 Single Board Computer based on Z80

Size: 124.5 × 124.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 58
Nets: 136
Pads: 459
Tracks, vias: 1,627, 243
Pours: 1,074
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 23 Aug 2026
Updated: 30 Aug 2026

Overview

Qs-80-sbc is an open-source printed circuit board by ifilot, from the ifilot/QS-80 repository on GitHub. It is a 2-layer board of 124.5 × 124.5 mm with 58 parts on 136 nets, routed with 1,627 tracks and 243 vias.

It is built around the ATMEGA328P-PU, Z84C0020AEG and MAX232N. Its parts include 21 capacitors, 9 resistors, 8 ICs, 6 connectors and 3 diodes. It belongs with the computers and single-board computers boards and the AVR (ATmega, ATtiny) and FPGA and CPLD boards of this library.

Main components

Parts

Qty	Value	Footprint	References
12	0.1uF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm	C2, C3, C4, C5, C6, C7, C8, C11, C12, C13, C14, C17
5	10uF	Capacitor_THT:CP_Radial_D5.0mm_P2.50mm	C16, C28, C29, C30, C31
4	100	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R8, R9, R10, R11
4	MountingHole	MountingHole:MountingHole_3.2mm_M3_DIN965_Pad	H1, H2, H3, H4
2	10k	Resistor_THT:R_Array_SIP9	RN1, RN2
2	22pF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm	C1, C10
2	560	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4, R5
1	100k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R3
1	100nF	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm	C27
1	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1
1	14.7456 MHz	Oscillator:Oscillator_DIP-14	Y1
1	16MHz	Crystal:Crystal_HC49-U_Vertical	Y2
1	1N4148	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1
1	22	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2
1	47uF	Capacitor_THT:CP_Radial_D6.3mm_P2.50mm	C15
1	AS6C1008	Package_DIP:DIP-32_W15.24mm_Socket	U2
1	ATF1504AS	Package_LCC:PLCC-44_THT-Socket	U5
1	ATmega328P-P	Package_DIP:DIP-28_W7.62mm_Socket	U3
1	Atmel-JTAG-10	Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical	J4
1	BUS	Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical	J1
1	DE9_Socket	Connector_Dsub:DSUB-9_Pins_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset4.94mm	J3
1	KEYBOARD	components:J_Mini-DIN-6	J5
1	MAX232	Package_DIP:DIP-16_W7.62mm_Socket	U22
1	MOUSE	components:J_Mini-DIN-6	J6
1	NMI	Button_Switch_THT:SW_PUSH_6mm	SW3
1	ON	Button_Switch_THT:SW_PUSH_6mm	SW1
1	ON	LED_THT:LED_D5.0mm	D10
1	POWER	LED_THT:LED_D5.0mm	D9
1	RESET	Button_Switch_THT:SW_PUSH_6mm	SW2
1	SST39SF010	Package_DIP:DIP-32_W15.24mm_Socket	U4
1	TL16C2550PFBR	Package_QFP:TQFP-48_7x7mm_P0.5mm	U6
1	USB_B	Connector_USB:USB_B_OST_USB-B1HSxx_Horizontal	J2
1	VERA MJ	veraboard:veraboard	U8
1	Z84C0020	Package_DIP:DIP-40_W15.24mm_Socket	U1

Questions

How big is the Qs-80-sbc PCB?

It measures 124.5 × 124.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Qs-80-sbc use?

58 parts, built around the ATMEGA328P-PU, Z84C0020AEG and MAX232N. 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 Qs-80-sbc KiCad files?

From the ifilot/QS-80 repository on GitHub, at the commit this page was made from: the board is pcb/qs-80-sbc.kicad_pcb and its schematic pcb/qs-80-sbc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Qs-80-sbc design in my own project?

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

Category and platform

Computers and single-board computers AVR (ATmega, ATtiny)FPGA and CPLD

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/ifilot-qs-80" title="Qs-80-sbc 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/ifilot-qs-80.jpg" alt="Qs-80-sbc" width="1200" height="900">

A picture that opens the board, for a README

[![Qs-80-sbc](https://pcbkit.io/embed/boards/ifilot-qs-80.jpg?size=s)](https://pcbkit.io/boards/ifilot-qs-80)

Source

Repository: ifilot/QS-80
Board file: pcb/qs-80-sbc.kicad_pcb
Commit: b07f25f
Licence: Not stated

Similar boards

2 layers38.1 × 85.1 mm
Pontag
hkzlab/pontag
PONTAG is an active adapter that converts a mouse using PS/2 protocol into an RS232 mouse (Microsoft protocol), commonly used on IBM XT/AT and compatibles.
35 parts9
2 layers205.7 × 236.9 mm
6502 DebugBoard
DomAtTheShack/6502-Breadboard-ROM

90 parts
2 layers95 × 72 mm
REVIO PCB
ntsklab/REVIO-PCB

31 parts
2 layers177.5 × 61 mm
PantallaSerie
Villabaal/Autoclave-interface
interfase board of the Autoclave
21 parts
2 layers162.8 × 77.7 mm
Serialboard
jgw4/a1cards
The Apple Cassette Interface "ACI" card has been completely reverse-engineered in KiCad 10, with linked KiCad and schematic files, which output production-ready gerber files and a fully-populated step file of the card…
8 parts
2 layers99.7 × 69.9 mm
TTY
kitspace-test-repos/kicad6-file-collection

44 partsMIT
2 layers101.6 × 50.8 mm
Jerkey minievse minievse
oomlout/oomlout_oomp_project_bot_v_2

54 parts
2 layers149.3 × 87.9 mm
Datapod
pedrolpena/datapod
Arduino based schematics and software for the AOML ABIIS system
67 parts