when we kicked off the adafruit feather series of boards we started with the atmega32u4 and made a bunch of PCBs that featured that chip with accessories at the end (https://www.adafruit.com/?q=feather+32u4&sort=BestMatch)
fun fact: the featherline is derived from the bluefruit micro which was a popular 32u4 + BLE devboard (https://www.adafruit.com/product/2661)
after the 32u4 we went to the SAMD21 which brought cortex M0 and some circuitpython-capability to the Feather line. the SAMD21 was like-wise compact enough we could add some components on the end (https://www.adafruit.com/?q=feather+m0&sort=BestMatch) with more people using circuitpython, the SAMD21 is a bit cramped with only 32KB of RAM.
it’d be better if we re-did the idea series but with the SAMD51 (https://www.adafruit.com/?q=feather+m4&sort=BestMatch) however, the samd51 uses a lot more PCB space and now-a-days we cant get SAMD51’s anyways so we thought, let’s maybe try a RP2040 Feather collection?
Here’s the ‘bones’ of the RP2040 SCORPIO but with everything we could do in 0402 and shoved to the left. we ‘test fitted’ a few popular modules/connectors to make sure they’d fit in the left-over cavity. can you guess what each one would be for, or maybe you have ideas for any ones we missed?
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- Source: https://blog.adafruit.com/2023/01/22/rp2040-feather-bones-for-a-few-different-varieties/
