HardLabs

Adret740A CPU

f8eho·Adret740A_CPU·hardware/Adret740A_replacement_cpu/Adret740A_replacement_cpu.kicad_sch

This repository ships a schematic but no board layout.

About the Adret740A CPU PCB

Adret740A CPU is an open source AVR/Arduino PCB design by f8eho, published on GitHub under the MIT license. It is a board, with 7 components from 7 distinct parts.

Its main chip is the Arduino Mega 2560, from the AVR/Arduino family. Other key parts include the Mini-plaquette ISO1540 and Mini-plaquette MCP23017 (0x20). By type, the board carries 3 modules, 2 connectors and 2 resistors.

From the project

Reviving a 1980s ADRET 740A with an Arduino CPU

Ce projet KiCad 10 documente le câblage du prototype Arduino Mega 2560, ISO1540 et MCP23017 monté sur plaque à pastilles. Il ne contient volontairement ni PCB ni empreintes.

Le même câblage et les mêmes numéros de broches s'appliquent à une Arduino Mega 1280 ; les validations matérielles consignées ici ont toutefois été effectuées avec le prototype Mega 2560.

Main components on the Adret740A CPU

Arduino Mega 2560Mini-plaquette ISO1540Mini-plaquette MCP23017 (0x20)

Adret740A CPU bill of materials (BOM)

7 components, 7 distinct parts.

QtyPartRefs
1
Arduino Mega 2560
A1
1
Mini-plaquette ISO1540
A2
1
Mini-plaquette MCP23017 (0x20)
A3
1
PANNEAU AVANT 2x13
J1
1
B1 BUS INSTRUMENTS
J2
1
4.7k CHARGT pull-up
R1
1
10k RESET pull-up
R2

Adret740A CPU design files

The KiCad project lives in the f8eho/Adret740A_CPU repository on GitHub; these links point at the commit this page was built from.

Adret740A CPU: common questions

What microcontroller does the Adret740A CPU use?

The Adret740A CPU is built around the Arduino Mega 2560, from the AVR/Arduino family.

How many components are on the Adret740A CPU?

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

Where can I download the Adret740A CPU design files?

From the f8eho/Adret740A_CPU repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Adret740A CPU design in my own project?

Yes, under the terms of its MIT license, which f8eho chose for the repository.

Can I test firmware for the Adret740A CPU 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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