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ATTinyCore Universal (free) Download Full | **UPDATE

Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8 - ATTinyCore Universal

ATTinyCore Universal (free) Download Full | **UPDATE

Published Date: 2024-04-14

ATTinyCore Universal Free Download

ATTinyCore is a free and open-source operating system designed for microcontrollers. It is based on the Tiny Core Linux distribution and is optimized for embedded systems. ATTinyCore is highly customizable and can be used for a variety of applications, including home automation, robotics, and industrial control.

The latest version of ATTinyCore, version 13.0, was released on March 15, 2023. This version includes a number of new features and improvements, including:

  • Support for new microcontrollers, including the ATTiny85 and ATTiny1634
  • Improved performance and stability
  • New features, such as a built-in web server and support for Bluetooth


ATTinyCore Universal: Arduino support for almost every classic tinyAVR device! Supports ATtiny 1634, 2313/4313, 24/44/84, 441/841, 25/45/85, 261/461/861, 87/167, 48/88, 43 and 828. Supports programming vis ISP, Serial (Optiboot - all parts with >4k flash, and all parts with 4k flash for which an 8k version is available) or VUSB (Micronucleus - where appropriate) There are 272 different versions of micronucleus built (and part of the 2.0.0-dev branch now), and optiboot will dwarf that number! 0 of those have been tested. Obviously, we are leaning very heavily on automation of configuration generation for this release. Half of the tinyNeoPixel speeds have had the assembly routines modified in major ways (there's no more stupid menu for the port), but they are untested. Virtual boot relies on rewriting the vector table, such that the RESET vector points to the bootloader.