Kris MGH-Kris

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John Traphofner

UNITED STATES OF AMERICA
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Description

NABU PC native USB to serial adapter

This is an alternative way to provide serial communication for the vintage NABU computer. Instead of using RS422, it uses USB-to-serial adapter. This adapter "intercepts" the RX and TX signals that originally go to the RS422 circuit and "injects" the RX,TX from the USB adapter... There is also an option to "inject" an alternative clock signal (as suggested by one of my viewers)...this should allow a real 115200 bps speed.

I suggest using the thin-style headers for the pins, to protect the DIP socket inside the NABU computer.

YouTube video covering more details here: https://youtu.be/NxW2GOw5Mqk

Code

GitHub Sources

https://github.com/Kris-Sekula/NABU/tree/main/RS422Alternative/Hardware

Schematic and Layout

Schematic

https://github.com/Kris-Sekula/NABU/blob/main/RS422Alternative/Hardware/nabu_serial.pdf

Download BOM(Bill of materials)

Dec 31,2022

2,616 views

NABU PC native USB to serial adapter

This is an alternative way to provide serial communication for the vintage NABU computer, instead of using RS422, uses USB-to-serial adapter

2616

10.00 (1)

Published: Dec 31,2022

BOM(Bill of materials)

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File Last Updated: 2023/11/23 (GMT+8)

File update record

2023-11-2315:51:16

Parts List (BOM) is updated.

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