CODEWITHSUNDEEP
esp32lora
thermike
thermike

Reputation: 11

TTGO LoRa SX1276 ESP32 module receiving garbage data

I am playing around with two TTGO LoRa SX1276 ESP32 modules, where one sends and the other receives characters. They are on:

#define BAND    868E6

They do it successfully. However, for time to time, the receiver receives a packet of characters that includes seemingly garbage or not readable characters. Here are some examples:

01.07.2021 11:29:28 Home/Lora/inbound WEMOS Receiver Received:[▒*TJ▒*A▒▒z▒y!▒#▒[                                                                                                             )h▒>0▒▒7D(▒▒&9▒$▒▒"▒"▒%▒▒F▒j▒.▒▒▒▒▒▒n▒▒m▒▒▒
                                       X▒▒^▒▒] with RSSI -120


01.07.2021 13:52:19 Home/Lora/inbound WEMOS Receiver Received:[▒▒&}▒▒[▒&l}▒▒▒▒M1g̓▒      C▒}▒▒^▒▒D<▒Q.=
01.07.2021 13:52:19 uX] with RSSI -119
01.07.2021 14:51:53 Home/Lora/inbound WEMOS Receiver Received:[т▒8▒;;
                                                                     ▒n
                                                                       Y0̈́p>▒&▒▒▒▒W
01.07.2021 14:51:54 ▒,▒F▒▒▒▒▒▒
I▒u▒▒=▒▒4D1*▒يθ▒▒▒;!-v▒▒

I guess this could be a parasite or some interference from the environment. Or could it be some LoRa transmission? How can I decode/decrypt this or search its origin?

Upvotes: 0

Views: 582

Answers (1)

dda
dda

Reputation: 6213

You are not alone, as they say, especially on so common a band as 868. This is most probably data packets, encrypted and/or encoded, from sensors belonging to someone else. Ignore them. You won't be able to decode them.

Change frequencies, and format your packets so that you can recognize what's yours and what's not.

Upvotes: 0

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