Download WinAVR – GCC-Based Toolchain for AVR Microcontroller Programming

WinAVR is a free, open-source suite of development tools for Atmel AVR microcontrollers running on Windows. It bundles the AVR-GCC compiler, AVR-libc standard library, avrdude programmer, make utilities, and supporting tools into a single installer — providing everything needed to write, compile, and upload C/C++ code to AVR chips like the ATmega328 (used in Arduino).

WinAVR has been a foundational toolchain for AVR development on Windows for many years and remains widely used for embedded systems projects, robotics, custom PCB designs, and academic coursework. While newer alternatives like the official AVR-GCC toolchain from Microchip are available, WinAVR is still a reliable choice for many classic AVR projects and integrates well with editors like AVR Studio 4.

The suite includes avrdude for programming chips via ISP programmers (USBasp, AVRISP mkII, STK500, etc.), Programmer’s Notepad as a lightweight code editor, and utility tools for generating Intel HEX files and managing fuse bits. It is an excellent starting point for embedded C programming on AVR hardware.

Key Features

• AVR-GCC compiler – Full GCC-based C/C++ compiler targeting all AVR microcontroller families.
• AVR-libc – Comprehensive C standard library optimized for AVR with peripheral access headers.
• avrdude – Universal AVR chip programmer supporting ISP, JTAG, PDI, TPI, and bootloader protocols.
• Programmer’s Notepad – Lightweight syntax-highlighting editor with build system integration for AVR projects.
• make and binutils – GNU make, objcopy, objdump, size, and other essential build tools included.
• One-click installer – All tools bundled into a single Windows installer with PATH configuration.

How to Install

1. Download the WinAVR installer from the link below.
2. Run the installer and follow the setup wizard — accept the default installation path to ensure PATH entries are configured correctly.
3. After installation, open a command prompt and run avr-gcc --version to confirm the compiler is working.
4. Write your AVR C code in Programmer’s Notepad or any editor, create a Makefile targeting your MCU, and run make to compile.
5. Connect your programmer and flash the HEX file to your AVR chip with avrdude -c usbasp -p m328p -U flash:w:main.hex (adjust for your programmer and MCU).