I’ve been writing about Arduino for almost 20 years and, over the last few years, writing up Open Source reports and/or announcements from Arduino Day. This year, it’s March 21-22. This brief overview of the 2024 Arduino Open Source report is super inside baseball. The goal is to document the latest chapter in about two decades of covering this open-source story.
From the Arduino 2024 Open Source report – In 2024, a (new?) company based out of Russia became the top contributor and maintainer of Arduino libraries — and appeared to be translating some open-source code with attribution removed and linking to iarduino.ru store. Marcello Majonchi, Arduino Chief Product Officer added this comment after I sent this article for Arduino’s review before publication “Trema.ru ranked #1 for new libraries added to the Arduino Library index with 67, and #4 for number of library releases with 145”.
The entity, originally listed as “iArduino” (misleadingly suggesting an official connection to Arduino), was linked in Arduino’s 2024 Open Source report to a GitHub repo that has been inactive since 2017. After I raised concerns with Arduino’s leadership — including their former open-source director, email bounced, no longer with Arduino, and the current Chief Product Officer, and Arduino CEO — the report was updated to replace “iArduino” with “tremaru” https://github.com/tremaru However, the libraries direct users https://iarduino.ru/. The Arduino leadership said I am welcome to do a deep dive, and start a takedown procedure with a DMCA takedown notice to GitHub. I’ll pass on that at this time. It’s unclear if all the code is original or translated with credit/license removed.
Arduino funding as of 2025 – Crunchbase:
Arduino has raised a total of $54,000,000 in funding. This includes two notable Series B funding rounds – Series B on September 6, 2023: Raised $22,000,000 with investors including Anzu Partners and CDP Venture Capital. Series B on June 7, 2022: Raised $32,000,000 with lead investor Bosch Ventures, along with Anzu Partners, Arm Holdings, and Renesas Electronics Corporation.
According to the Arduino Open Source Report 2024, Arduino released one open-source hardware product in 2024: the Plug and Make Kit, which includes seven boards.
Video from ASK AN ENGINEER – MARCH 5, 2025 “From Russia with Code? The 2024 Arduino Open Source Report”