Is the Arduino STAR OTTO open source? @ST_World @ArduinoOrg @ST_News @arduino #freearduino

Arduino STAR – OTTO. The board was available at Maker Fair in May of 2017 and according to the Twitter account “it soon will be available from distributors.“. Searching on Ocotopart, all there is a PDF from STM from 2016, when it was announced, so far we could not find which distributors will stock it.

Mfba17 Arduino 2142-1
The Arduino Star OTTO was sold at Maker Faire 2017 in May as well for $54 (unboxing post). It is advertised as open-source.

In an interview _at_ Maker Faire by Mike Szczys of, the CEO of Arduino, Federico Musto says “First of all everything is open source, open hardware, so everything will be available.

The Arduino Star OTTO was announced and shown over 1 year ago.

The Arduino Star series of boards feature ST Microelectronics processors, and the first of the series is the STAR OTTO. The Otto combines the power of the STM32F469 processor and an Espressif ESP8266 for WiFi, with several on-board peripherals, such as a micro-SD slot, a connector LCD-Audio-Camera, an USB Host, an headphone and speaker output, and an on-board stereo microphone.

The board physically says “Open-source electronics” on it. There are no PCB design files or licenses on any files available.

Adafruit 2520
The schematic (PDF) has no license indicated. “DogHunter” logo is the only ownership indicated as author.

We emailed for comment regarding the open-source status and claims for their products, they have not replied.

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  1. Gabriel Roper

    I have been under the understanding that Arduino hardware work is now going to all be on the website. Since Arduino LLC and Arduino SRL reconciled, I have not seen any updates on the product page, so I believe that information found on should be discredited at this time.

    This does not solve all of the issues with quasi-open source (I found a few on the .cc domain), but I believe they are still working out differences there and will fix things up soon(-ish).

  2. hi @Gabriel Roper, it appears is the “one arduino” now – massimo banzi from said the following when asked about the files…

    “Arduino is open source HW and SW. Full stop.
    Some files seems to be missing and I’ll inform my colleagues at .org that they need to update them.”

    regardless of the file location, if they (arduino) ever publish the open source files for the open-source electronics they are selling, why does the PDF say “DogHunter” as the owner and no license?

    as far as who owns the “arduino” trademark and domains (all of them) – here ya go.

    Federico Musto
    [email protected]

    Company: Arduino AG (Federico Musto)
    Email: [email protected]

  3. Thanks for linking to my unboxing! My understanding from other sites is that the merge of the Arduino entities (especially the division between the open source side and the hardware side) is still a work in progress.

    It strikes me that the Star OTTO Light may be simply an early production run… Or someone realized not everyone wants to pay a premium for a graphics chip, etc., on this board.

    Finally, myself and others have identified some serious security problems in the Arduino wifilink firmware that need addressing before this is ready for prime time:

  4. @martin, thank you! i checked out the github and… wow, yah, that’s an issue!

    the results of http://192.168.xx.yy/config.json are {“ssid”:”your_ssid_name”,”password”:”your_formerly_secret_password”} (with the actual data).”


  5. The fact that you can see the cleartext config when you’re on the network is definitely Not Good, but one would expect all the devices on a protected network would know that info anyway (or how would they be on the network?)

    However, every time you reboot the device it becomes an access point, which may well blow the door wide open:

    The fix isn’t trivial but it’s just a matter of securing the firmware (closing holes like #25) as well as securing the setup process. However, I’ve seen no feedback from Arduino on these issues yet.

    I have done some work on the firmware though – it’s not that difficult to make modifications:

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