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John Spencer edited this page Sep 4, 2026 · 3 revisions

AutoChanger - A Knitting Machine Auto Colour Changer to replace a Brother KRC-900

This project was designed to provide a lower cost replacement for the commercial auto colour changer available from Brother for their 1980's electronic knitting machines.

You can read about the progress of this design at the following links:

Building a better colour changer - Part 1 - Designing Hardware

Building a better colour changer - Part 2 - Firing the lasers

Building a Better Colour Changer – Interlude – The KRC-1000E

Building a Better Colour Changer – Part 3 – Revising the design

For the sake of completeness, the early versions of this project are described at [Hardware Version 1.0 to 2.0]https://github.com/mage0r/AutoChanger/wiki/Hardware-Version-1.0-to-2.0)

Version 2.0 to 3.0 was TinyPico Based. You can read about it at Hardware Version 2.0 to 3.0

Version 3.0 is a whole new build using an ESP32s3. You can read about it at Hardware Version 3.0

How to use your AutoChanger

Thanks for purchasing or building your own AutoChanger. I've put together a page of all the different features for you to try.

How to Use Your AutoChanger

CREDITS

This project was designed in 2017 by John and Sarah Spencer

Check us out at Heart Of Pluto

Made at hackmelbourne.org!

SPECIAL THANKS

To the HackMelbourne (CCHS, http://hackmelbourne.org) community of Melbourne, Australia.

To all other open-source developers whose countless hours supported every other aspect of this design.

DISTRIBUTION

The specific terms of distribution of this project are governed by the license referenced below. Please contact the copyright owner if you wish to modify the board for distribution. Please utilize this design for personal or research projects. Please acknowledge all contributors.

LICENSE

Licensed under the TAPR Open Hardware License (www.tapr.org/OHL). The "license" sub-folder also contains a copy of this license in plain text format.

Copyright John Spencer, Sarah Spencer, 2017