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As of 2025-07-24

Installing Arduino IDE 1.x

How to install the integrated development environment (IDE)

This guide explains the installation procedure for Arduino IDE 1.x.

If you have already installed Arduino IDE 1.x, you can ignore this article.

Download

Open the Arduino official download page in your web browser and download the Legacy IDE (1.8.X).

For example, the Windows installer is “Windows Win 7 and newer”.

Run the downloaded file and follow the instructions to install Arduino IDE 1.x.