2 layers70 × 95.4 mm Entwurf1, the printed circuit board in 3D

Entwurf1

Documentation and Overview over an oscilloscope project based on a STM32-µC.

Size: 70 × 95.4 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 150
Nets: 195
Pads: 525
Tracks, vias: 1,192, 157
Pours: 34
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 30 Jun 2025
Updated: 7 Oct 2025

Overview

Entwurf1 is an open-source printed circuit board by wirthda, from the wirthda/usb-oscilloscope repository on GitHub. It is a 2-layer board of 70 × 95.4 mm with 150 parts on 195 nets, routed with 1,192 tracks and 157 vias.

It is built around the AD8022ARZ-REEL7 and THS4631DGN. Its parts include 4 capacitors, 4 resistors, 4 ICs, 4 diodes and 1 connector. It belongs with the sensors and measurement boards of this library.

Main components

README

README.md

Introduction

This repository serves as documentation and overview of the project USB-oscilloscope, which was carried out in the summer semester 2025 at the efi faculty of the University of Applied Sciences Nuremberg (Georg-Simon-Ohm).

Overview

Project structure:

Project structure separated into areas of responsibility. legend:
HW - hardware
FW - firmware
SW - software

USB oscilloscope prototype:

Picture of the USB oscilloscope prototype.

Documentation:

PDF [GER]: Dokumentation_Projekt_USB_Oszi.pdf

Parts

150

Qty	Value	Footprint	References
37	R	Resistor_SMD:R_0603_1608Metric	Rf1, Rf2, Rf3, Rf4, Rf5, Rf6, Rf7, Rf8, Rf9, Rif1, Rif10, Rif11, Rif12, Rif13, Rif14, Rif15 +21
14	10k	Resistor_SMD:R_0603_1608Metric	Rpu1, Rpu2, Rpu3, Rpu4, Rpu5, Rpu6, Rpu7, Rpu8, Rpu9, Rpu10, Rpu11, Rpu12, Rpu13, Rpu14
11	0.1u	Capacitor_SMD:C_0603_1608Metric	Cby6, Cby8, Cby10, Cby12, Cby14, Cby16, Cby18, Cby20, Cby22, Cby26, Cby28
11	C	Capacitor_SMD:C_0603_1608Metric	Ccoup1, Cf1, Cf2, Cf3, Cf4, Cf5, Cf6, Cf7, Cf8, Cf9, Cin1
6	1u	Capacitor_SMD:C_0805_2012Metric	Cby1, Cby2, Cby3, Cby4, Cby5, Cby24
5	4.7u	Capacitor_SMD:C_0805_2012Metric	Cby7, Cby21, Cby23, Cby27, Cby29
5	coupling	Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm	JP3, JP4, JP5, JP6, JP8
4	10u	Capacitor_SMD:C_0805_2012Metric	Cby13, Cby15, Cby17, Cby19
4	C_Polarized	Capacitor_SMD:CP_Elec_6.3x7.7	C1, C2, C3, C4
4	D_Schottky	Diode_SMD:D_SMA	D1, D2, D3, D4
3	coupling	Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm	JP1, JP2, JP7
2	100	Resistor_SMD:R_0603_1608Metric	Rhys1, Rhys3
2	100p	Capacitor_SMD:C_0603_1608Metric	Cby9, Cby11
2	2.7k	Resistor_SMD:R_0603_1608Metric	Roff1, Roff2
2	50k	Resistor_SMD:R_0603_1608Metric	Rhys2, Rhys4
2	5k	Resistor_SMD:R_0603_1608Metric	Rref1, Rref2
2	820	Resistor_SMD:R_0603_1608Metric	R17, R18
2	AD8022ARZ-REEL7	AD8022:R_8_ADI	U2, U3
2	GND	TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm	H5, H6
1	+5V	TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm	H1
1	-5V	TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm	H2
1	10	Resistor_SMD:R_0603_1608Metric	Rref3
1	100n	Capacitor_SMD:C_0603_1608Metric	Cby25
1	10k	Potentiometer_SMD:Potentiometer_Bourns_3314G_Vertical	RV2
1	20k	Resistor_SMD:R_0603_1608Metric	Rin3
1	30k	Resistor_SMD:R_0603_1608Metric	Rin1
1	33k	Resistor_SMD:R_0603_1608Metric	R20
1	390k	Resistor_SMD:R_0603_1608Metric	Rin4
1	50	Resistor_SMD:R_0603_1608Metric	Rin5
1	560k	Resistor_SMD:R_0603_1608Metric	Rin2
1	5V_CLK	TestPoint:TestPoint_Pad_D1.0mm	TP8
1	5k	Potentiometer_SMD:Potentiometer_Bourns_3314G_Vertical	RVoff1
1	68k	Resistor_SMD:R_0603_1608Metric	R19
1	BNC_CH1	Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal	J1
1	CLK_REF	TestPoint:TestPoint_Pad_D1.0mm	TP10
1	Cin2	Capacitor_SMD:C_Trimmer_Voltronics_JR	CTrim1
1	LT1714CGN-PBF	COMP_USB_OSZI:SSOP-16_GN_LIT	U4
1	LTC1420CGN-PBF	ADC_USB_OSZI:FOOTPRINT_ADC_USB_OSZI	ADC1
1	LTC1450CG-PBF	DAC_USB_OSZI:SSOP-24_G_LIT	DAC1
1	NUCLEO-F767ZI	NUCLEO-F767ZI:ST_NUCLEO-F767ZI	A1
1	OPV1_OUT	TestPoint:TestPoint_Pad_D1.0mm	TP3
1	OPV2_OUT	TestPoint:TestPoint_Pad_D1.0mm	TP4
1	OPV3_OUT	TestPoint:TestPoint_Pad_D1.0mm	TP2
1	OPV4_OUT	TestPoint:TestPoint_Pad_D1.0mm	TP1
1	THS4631DGN	Package_SO:MSOP-8-1EP_3x3mm_P0.65mm_EP1.68x1.88mm_ThermalVias	U1
1	TRIGGER	TestPoint:TestPoint_Pad_D1.0mm	TP7
1	TRIGGER_REF	TestPoint:TestPoint_Pad_D1.0mm	TP9
1	V+	TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm	H3
1	V-	TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm	H4

Questions

How big is the Entwurf1 PCB?

It measures 70 × 95.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Entwurf1 use?

150 parts, built around the AD8022ARZ-REEL7 and THS4631DGN. 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 Entwurf1 KiCad files?

From the wirthda/usb-oscilloscope repository on GitHub, at the commit this page was made from: the board is cad/KiCad/USB_Oszi/Entwurf1/Entwurf1/Entwurf1.kicad_pcb and its schematic cad/KiCad/USB_Oszi/Entwurf1/Entwurf1/Entwurf1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Entwurf1 design in my own project?

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

Category and platform

Sensors and measurement

Topics

c embedded engineering firmware hardware oscilloscope python software usb analog-to-digital-converter electrical-engineering microcontroller

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/wirthda-usb-oscilloscope" title="Entwurf1 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/wirthda-usb-oscilloscope.jpg" alt="Entwurf1" width="1200" height="900">

A picture that opens the board, for a README

[![Entwurf1](https://pcbkit.io/embed/boards/wirthda-usb-oscilloscope.jpg?size=s)](https://pcbkit.io/boards/wirthda-usb-oscilloscope)

Source

Repository: wirthda/usb-oscilloscope
Board file: cad/KiCad/USB_Oszi/Entwurf1/Entwurf1/Entwurf1.kicad_pcb
Commit: d5a9193
Licence: Not stated

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