Does anyone have any data, or at least an educated hunch, about which Arduino family board shapes are the most widely used? I have some ideas for a new shield and I want to design it to reach the maximum number of potential buyers. Leaving aside the Uno, there is the Nano, the MKR, and the Micro, which all have a different physical form factor.
Are any of these clearly trending up or down, or already considered obsolete?
Bonus question: any information on the Adafruit Feather or the Teensy.
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