ESP32: how to retrieve a file from the SPIFFS 

 July 8, 2019

By  Peter

In ESP32 For Busy People, I have a section on the SPIFFS, the SPI file system. In this section, I show you how you can upload a file (like an image, or a text file) to your ESP32 and then use it in your sketches.

One thing I did not show was how to retrieve a file from the SPIFFS. For example, you may have a sketch that logs sensor data to a text file. How can you retrieve that file so you can process it on your computer?

A straight-forward way to do this is to run a simple web server on your ESP32. Using a browser, you can use this web server to download any file in the SPIFFS.

If you have installed the ESP32 Arduino Core in the Arduino IDE, you can use one of the example sketches that come with the package.

It’s the FSBrowser sketch, under File –> Examples –> Webserver.

In this video, I show you how to retrieve a file from the ESP32 using this sketch.


Peter Dalmaris is an educator, electrical engineer, electronics hobbyist, and Maker. Creator of online video courses on DIY electronics and author of three technical books, and has recently released his book Maker Education Revolution.   As a Chief Tech Explorer since 2013 at Tech Explorations, the company he founded in Sydney, Australia, Peter’s mission is to explore technology and help educate the world.  Tech Explorations offers educational courses and Bootcamps for electronics hobbyists, STEM students and STEM teachers. A life-long learner, Peter’s core skill is in explaining difficult concepts through video and text. With over 15 years of tertiary teaching experience, Peter has developed a simple yet comprehensive style in teaching that students from all around the world appreciate.  His passion for technology and in particular for the world of DIY open source hardware has been a dominant driver that has guided his personal development and his work through Tech Explorations. Peter’s current online courses have helped over 60,000 people from around the world to be better Makers. 

Peter Dalmaris

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