2 layers426.8 × 131.4 mm DG Nova CPU Tester, the printed circuit board in 3D

DG Nova CPU Tester

Size: 426.8 × 131.4 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 66
Nets: 433
Pads: 1,110
Tracks, vias: 483, 4
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 29 Aug 2022
Updated: 25 Aug 2026

Overview

DG Nova CPU Tester is an open-source printed circuit board by ForgottenMachines, from the ForgottenMachines/Data-General-Nova repository on GitHub. It is a 2-layer board of 426.8 × 131.4 mm with 66 parts on 433 nets, routed with 483 tracks and 4 vias.

It is built around the 74HC14. Its parts include 20 connectors, 8 resistors, 8 diodes, 5 capacitors and 2 ICs. It belongs with the RP2040 and AVR (ATmega, ATtiny) boards of this library.

Main components

74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters

Parts

Qty	Value	Footprint	References
6	1N4004	Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal	D1, D2, D3, D4, D5, D6
4	LED Bar 10	Forgotten Machines:LED Bar 10	BAR1, BAR3, BAR5, BAR7
4	R_Network09_US	Resistor_THT:R_Array_SIP10	RN1, RN3, RN5, RN7
3	C	Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm	C3, C4, C5
2	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R5
2	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R6
2	4.7k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R4
2	CAP_Disc_Common_-_Entrex_Trapezoid	Forgotten Machines:Disc Capacitor Common Entrex Trapezoid	C1, C2
2	Front Panel Controls	Connector_PinHeader_2.54mm:PinHeader_1x17_P2.54mm_Vertical	J9, J10
2	LED	LED_THT:LED_D1.8mm_W3.3mm_H2.4mm	D7, D8
2	LED Bar 10	Forgotten Machines:LED Bar 6	BAR4, BAR6
2	R_Network07_US	Resistor_THT:R_Array_SIP8	RN4, RN6
2	R_US	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R7, R8
2	Slot_02x50_Odd_Even	Forgotten Machines:DG NOVA Backplane Connector - Backside	J15, J16
2	Vipass Ammeter	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	JP1, JP4
2	~	Forgotten Machines:DG NOVA Backplane Connector - Frontside	J2, J3
1	74HC14	Package_DIP:DIP-14_W7.62mm	U1
1	ATX-24	Forgotten Machines:Connector_2x12_P4.2mmx5.5mm (ATX Plug)	J4
1	Arduino_Mega2560_Shield	Forgotten Machines:Arduino_Mega2560_Shield	XA1
1	CPU Option Inputs	Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical	J11
1	CPU Option Outputs	Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical	J17
1	Data Channel	Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical	J8
1	Data Channel	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J12
1	Entrex Backplane S01B53 to S13B53	Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical	TP1
1	Entrex ~{M CON DATA}	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	JP2
1	Entrex ~{M CON INST}	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	JP3
1	Front Panel Card Edge	Forgotten Machines:DG Nova Front Panel Card Edge	J5
1	Front Panel Socket - Backside	Forgotten Machines:DG NOVA Front Pannel Connector - Backside	J1
1	LED Bar 10	Forgotten Machines:LED Bar 7	BAR2
1	Logic 8 CH	Forgotten Machines:PinHeader_2x05_P2.54mm_Vertical - Backside	J19
1	Logic 8 CH	Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical	J20
1	MBO	Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical	J6
1	MEM	Connector_PinHeader_2.54mm:PinHeader_1x18_P2.54mm_Vertical	J7
1	MEM Control Outputs	Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical	J18
1	MountingHole	Button_Switch_Keyboard:nova frontpanel layout	FPIMAGE1
1	Pico	Forgotten Machines:RPi_Pico_SMD_TH	U2
1	Program Interrupt	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J13
1	R_Network08_US	Resistor_THT:R_Array_SIP9	RN2
1	SW_Push	Button_Switch_THT:SW_PUSH_6mm	SW1
1	System Control	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J14
1	XK-001	Forgotten Machines:XK-001_Volt-Amp_Meter - Backside	MES1

Questions

How big is the DG Nova CPU Tester PCB?

It measures 426.8 × 131.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the DG Nova CPU Tester use?

66 parts, built around the 74HC14. 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 DG Nova CPU Tester KiCad files?

From the ForgottenMachines/Data-General-Nova repository on GitHub, at the commit this page was made from: the board is DG Nova CPU Tester/Reverts/3.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the DG Nova CPU Tester design in my own project?

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

Category and platform

RP2040 AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/forgottenmachines-data-general-nova-3" title="DG Nova CPU Tester 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/forgottenmachines-data-general-nova-3.jpg" alt="DG Nova CPU Tester" width="1200" height="900">

A picture that opens the board, for a README

[![DG Nova CPU Tester](https://pcbkit.io/embed/boards/forgottenmachines-data-general-nova-3.jpg?size=s)](https://pcbkit.io/boards/forgottenmachines-data-general-nova-3)

Source

Repository: ForgottenMachines/Data-General-Nova
Board file: DG Nova CPU Tester/Reverts/3.kicad_pcb
Commit: a342bdf
Licence: Not stated
Copies: 2 copies in 1 repository

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