by Byte-Mix Lab

A tiny, open hardware, ESP32-powered retro-gaming console

View all updates Feb 05, 2021

Development at Full Throttle

by Juan Flores

Hi all!

First, I would like to thank everyone who has supported this project. We are over half way to our funding goal, and I very much appreciate the trust you’ve placed in me. And I can’t wait to send you your very own microByte!

Now for the campaign update…

Firmware v0.6 and Save-Game Support

This is a major update that I’ve been working on for a while. Version 0.6 of the microByte firmware includes some general improvements, a few bug fixes, rewritten comments that better document the code, and various GUI features. But the two most interesting additions are:

1. Savable game state, which allows you to save—and instantly resume—your progress on the GameBoy, GameBoy Color, Sega Master System, and Game Gear platforms.

2. A non-volatile configuration system that allows you to save your configuration to flash memory so that it will stick around when you turn off the device. This allows microByte to return to its previous state (without showing a boot animation, for example) if it is turned off and then back on again.

You can see the full update log here.

Together, these two features provide some pretty cool functionality. While playing a game, your progress will auto-saved every 30 seconds, just in case, but you will rarely need to rely on that save because turning microByte on brings you right back to where you were the last time you turned it off. Even better? "Off" means truly off—not some battery-draining suspend state.

The Byte Mix Lab Website

I also want to introduce our new Byte-Mix Lab website, http://www.bytemixlab.com/, which aims to provide a place where you can find everything related to this project, including:

  • Tutorials
  • Apps
  • Tools
  • Various firmware versions.

I’m still working on the tutorials, but they’ll be up soon!

What to Expect in Next Week’s Update

I don’t want to spoil it, but…below are a few of the things I’m likely to include in next week’s update:

  • A video that showcases our epoxy-casting technique for enclosure fabrication
  • Another firmware status update
  • The first functional version of microPython on microByte

That’s all for this week, but please drop me a line using the Ask a technical question form if you have any questions. I’ll be happy to provide answers!

About the Author

Juan Flores


$8,805 raised

of $3,750 goal

234% Funded! Order Below

Product Choices


microByte Eco Edition

A white microByte. If you already have a USB Type-C cable and a MicroSD card, this version saves you money and helps us reduce the amount of electronic waste produced.


microByte Premium Bundle

This kit includes a microByte in your choice of three colors—translucent, yellow, or blue—as well as a USB Type-C cable, an 8 GB MicroSD card, and a second enclosure (white with gray buttons).


Byte-Mix Lab

I'm an embedded-systems engineer and PCB designer. In recent years, I've been working on open source robotics projects and contributing to the development of an ROS2 port for micro-controllers called micro-ROS.

Juan Flores



PCB Fabrication & Assembly

LCSC Electronics

Components & Hardware Sourcing

Resin Pro


Resin & silicone for enclosure manufacturing

See Also

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