# Big ESP32 + SX127x topic part 2

**URL:** <https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-2/11973>\
**Category:** End Devices (Nodes)\
**Created:** [January 23, 2018, 2:11pm UTC](https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-2/11973 "2018-01-23T14:11:55Z")\
**Posts on this page:** 1\
**Showing post:** 82

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**Author:** ![LoRaTracker](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/loratracker/32/48502_2.png) [@LoRaTracker](https://www.thethingsnetwork.org/forum/u/LoRaTracker)\
**Post date:** [February 1, 2018, 12:19am UTC](https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-2/11973/82 "2018-02-01T00:19:21Z")

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That library may suffer from the issue I mentioned here;

[https://www.thethingsnetwork.org/forum/t/a-point-to-note-lora-low-data-rate-optimisation-flag/12007/2](https://www.thethingsnetwork.org/forum/t/a-point-to-note-lora-low-data-rate-optimisation-flag/12007/2)

If so you will see errors on high spreading factor packets.

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