Programming LoRa-E5 with Arduino, LoRa-E5 mini Point to Point Comminucation over 24 km

Products & Technology LoRa
21

Hi there,

Pretty Stellar IMO, :+1: Got any pics of the DUT’s ? What Antenna’s
Great info.

GL :slight_smile: PJ :v:

22

Thank you for the excellent report.

23

The DUT are the wio-e5-le mini and the antennas are the supplied ones that come with the dev kit. I believe they have a gain of 2.8dBi.

I have been looking into the radio laws in europe. If im not mistaken I think i can operate 869.4 MHz - 869.65 MHz and transmit 500mW of power at a 10% duty cycle. Regional Limitations of RF Use in LoRaWAN | The Things Network

The E5-LE i believe can output up to 20.8dBm so this could be an option to increase range?

I want to do some tests to see how reducing SF but increasing power might help with distance. Theres a trade off and im not entirely sure what it is.

1 Like
24

Hi,

By compilation “STM32WL_SimpleP2P_master.ino” I got error:

STM32WL_SimpleP2P_master.ino:62:26: error: cannot convert ‘const uint32_t [3]’ {aka ‘const long unsigned int [3]’} to ‘const uint32_t (&)[5]’ {aka ‘const long unsigned int (&)[5]’}
62 | radio.setRfSwitchTable(rfswitch_pins, rfswitch_table);

I set Lora boards / Lora-E5 mini

Please let me know why this error occured, and what is wrong? Thank you

25

try downgrading your radio lib to 6.4.2

26 
// BSP : STM32 boards groups by STMicroelectronics 2.7.1
// Borad select : STM Boards groups / LoRa boars
// Board part number : LoRa-E5 mini (Board to be selected from Tools submenu 'Board part number)

#include <RadioLib.h>           // 6.4.2  https://github.com/jgromes/RadioLib

Please verify the BSP and library versions.

27

im writing up my lora adventures here to if you want to follow?

3 Likes
28

This are some stellar results, i’m gobsmacked.
Especilly with kit antennas. I usually find them tuned to wierd frequencies, out of my stack of 10-15 alegedly 433 and 868 MHZ antennas I found one, that was tuned to 433…after removing abs housing, with sleeve it was 405MHz . Rest wasn’t even in the ballpark like 433MHz rs485 modules sold with multiband antennas tuned for 2.5GHz, 1.6GHz 1GHz and 530MHz… I started doubting NanoVNA, but quick range test confirmed antenas were shite.

Long story short bravo seedstudio for those Antenas.