In May 2025 the German audio hardware maker company Teufel announced a new product, the Mynd Bluetooth speaker bos. The speaker in itself is yet another Bluetooth speaker box, the remarkable feature of it is that it was announced as an “Open Source Project” with “high repairability and sustainability”, with all mechanical and electronics design files as well as the firmware source code published as “open source”. So they mean the Mynd to be a Free Software and open hardware product.
So we wanted to put this to a test!
We got ourselves a device and did a careful analysis of the design files provided by the manufacturer to answer the question: Is it really ‘open source’? And what does this mean for hardware?
In this talk I will present what we found, eventual caveats and what this means to the central question: Is it ‘open source hardware’?
