# Big ESP32 + SX127x topic part 3

**URL:** <https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436>\
**Category:** End Devices (Nodes)\
**Created:** [October 4, 2018, 12:58pm UTC](https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436 "2018-10-04T12:58:13Z")\
**Posts on this page:** 1\
**Showing post:** 117

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [February 17, 2019, 12:02pm UTC](https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436/117 "2019-02-17T12:02:28Z")

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> [@oztechgeek](#):
>
> noted that SPI.h is showing red and wonder if this has something to do with it

No, that’s fine; that’s just bad syntax highlighting triggered by the leading uppercase character in the name. This works for me (for a different device):

![includes](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/5/0/507cd62ca126640ac26663d6fdac4aecb1f4bdd6.png)

As for garbage in the console: does the baud rate of 9600 match the value in the code?

Your OTAA example indeed shows that the node transmits the Join Request just fine, and that TTN received _and accepted_ it, as it assigned a DevAddr (which indeed will be different for each accepted join). In the gateway’s Traffic page in TTN Console you should also see a green icon for the Join Accept, for the gateway that TTN selected to transmit that, but I’m afraid your node did not receive that downlink.

What SF is the Join Request using? Do you see the green Join Accept? Please show its details. As the OTAA Join Request works, ABP should work too, as ABP does not need any downlinks at all. Be sure to keep at least a few meters between node and gateway. And see `LMIC_setClockError`: [Over-the-air-activation OTAA with LMIC - #36 by matthijskooijman](https://www.thethingsnetwork.org/forum/t/over-the-air-activation-otaa-with-lmic/1921/36).

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