Arduino nano and RFM95 basic test - EV_JOIN_TXCOMPLETE: no JoinAccept

[bluejedi]

Thanks. That’s a different board.

SAMD21 M0 Mini (Arduino M0 compatible) board is like this:

Available here.

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This STM32F411CEU6 board also looks interesting:

Big STM32 boards topic

Does anyone have experience with these STM32F411CEU6 boards? This board appears to be the nextgen of the older STMF103 based blackpills. It comes with STM32F411 that is more powerful, has more memory, floating point support and a USB-C connector. It comes with a bootloader that has USB support. Available here. The board is supported by the STM32 Arduino Core and supported by PlatformIO. It has spare solder pads for a SOIC-8 chip on the bottom which is probably for adding a flash chip (and …