# 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:** 272

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**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:** [October 2, 2019, 12:37pm UTC](https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436/272 "2019-10-02T12:37:55Z")

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> [@fuxi](#):
>
> SX1276 V2 Lora ESP32 LX6 Dual-Core 0,96" OLED Bluetooth LE Wifi Kit 32 Modul CP2012 IOT 868-915MHz

This looks more like some AliExpress product title than the actual make and model of a board.  
Start with getting the exact make (manufacturer), model and version of your board first _(read the start of this topic for an impression of a subset of available boards)._  
The board make, model and version are essential for determining:

- What pin mappings to use
- If manual wiring of DIO ports is required
- If additional code is required to get the board running _(e.g. like required for TTGO T-Beam V1.0)_

Also take care that the TTN LoRaWAN keys/id’s in the sketch are entered correctly and in the correct byte order. See: [Format of Keys and ID's for Arduino LMIC libraries [HowTo]](https://www.thethingsnetwork.org/forum/t/format-of-keys-and-ids-for-arduino-lmic-library-howto/28243)

Please read the following for how to format code and logs in your posts:  
[How do I format my forum post? [HowTo]](https://www.thethingsnetwork.org/forum/t/how-do-i-format-my-forum-post-howto/8735)

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