Pinenut is a newer smaller variant of #PineCone #BL602 ... It's free for open source devs
https://pine64.com/product/free-pinenut-01s-module-promotion-limit-one-per-order/?v=0446c16e2e66
@chrysn The PineCone Community is still reverse-engineering the code, check the updates here: https://github.com/pine64/bl602-docs/tree/main/hardware_notes