# Arduino nano and RFM95 basic test - EV\_JOIN\_TXCOMPLETE: no JoinAccept **URL:** \ **Category:** LMIC\ **Created:** [September 21, 2020, 7:08pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-nano-and-rfm95-basic-test-ev-join-txcomplete-no-joinaccept/40058 "2020-09-21T19:08:50Z")\ **Posts on this page:** 1\ **Showing post:** 43
**Author:** ![bluejedi](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/bluejedi/32/44639_2.png) [@bluejedi](https://www.thethingsnetwork.org/forum/u/bluejedi)\ **Post date:** [September 24, 2020, 10:49pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-nano-and-rfm95-basic-test-ev-join-txcomplete-no-joinaccept/40058/43 "2020-09-24T22:49:04Z")
Thanks. That’s a different board. SAMD21 M0 Mini (Arduino M0 compatible) board is like this: ![SAMD21-MINI-Pinout1](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/4/2/42fd4058b5a3aaf60d08dfbe6bbca53ceff32f31.png) Available [here](https://www.aliexpress.com/item/4000169610268.html). ```auto ``` * * * This STM32F411CEU6 board also looks interesting: > [@Big STM32 boards topic](https://www.thethingsnetwork.org/forum/t/big-stm32-boards-topic/13391/208): > > 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. [https://github.com/WeActTC/MiniF4-STM32F4x1](https://github.com/WeActTC/MiniF4-STM32F4x1) Available [here](https://www.aliexpress.com/item/4000346695587.html). 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… --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/arduino-nano-and-rfm95-basic-test-ev-join-txcomplete-no-joinaccept/40058)._