HardLabs

CPU TESTER

nandgate·Homebrew-HW·CPU_TESTER/CPU_TESTER.kicad_pcb

CPU TESTER PCB layout, top view — open source AVR/Arduino board by nandgate

About the CPU TESTER PCB

CPU TESTER is an open source AVR/Arduino PCB design by nandgate, published on GitHub under the MIT license. It is a 2-layer board measuring 161.3 × 101.6 mm, with 27 components from 7 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. By type, the board carries 9 resistors, 7 connectors, 6 diodes, 3 transistors, 1 module and 1 capacitor.

From the project

Hardware designs for 8-bit homebrew computer

Hardware files for the 8-bit homebrew project.

Each folder contains the KiCad project for a processor/board. Under the PLD there is a folder with the WinCUPL projects for the PLD for each board.

Main components on the CPU TESTER

Arduino_Nano_v3.x

CPU TESTER bill of materials (BOM)

27 components, 7 distinct parts.

QtyPartRefs
1
Arduino_Nano_v3.x
A1
3
2N3904
Q1, Q2, Q3
7
Conn_02x21_Odd_Even
J1, J2, J3, J4, J5, J6, J7
6
BiColorLED_RG
D1, D2, D3, D4, D5, D6
1
0.1uF
C1
3
R
R1, R8, R9
6
10.1K
R2, R3, R4, R5, R6, R7

CPU TESTER design files

The KiCad project lives in the nandgate/Homebrew-HW repository on GitHub; these links point at the commit this page was built from.

CPU TESTER: common questions

What microcontroller does the CPU TESTER use?

The CPU TESTER is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the CPU TESTER PCB?

The CPU TESTER measures 161.3 × 101.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CPU TESTER?

27 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the CPU TESTER design files?

From the nandgate/Homebrew-HW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CPU TESTER design in my own project?

Yes, under the terms of its MIT license, which nandgate chose for the repository.

Can I test firmware for the CPU TESTER without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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