search

kizniche / ttgo-tbeam-ttn-tracker

TTGO T-Beam Tracker for TTN Mapper and TTN Tracker using US (915 MHz) and EU (868 MHz) frequencies
https://kylegabriel.com/projects/2019/04/lorawan-tracker-and-mapper.html
GNU General Public License v3.0
265 stars 139 forks source link

How to work with the downlink message? #18

Open HouzuoGuo opened 4 years ago

HouzuoGuo commented 4 years ago

Hello! I've tried out this project on a T-Beam v0.7, it works quite well, thanks!

I'm trying to play with the downlink feature of this program, On TTN console I posted three bytes of downlink payload to port 10 (same as the uplink port):

image

The T-beam however doesn't seem to get the 3-bytes downlink payload, there is no indication of "Data Received" from the serial monitor, nor does the display show "[TTN] Response:".

I noted that the uplink signal is quite weak at -116 RSSI and SNR is very low at -11, is that too weak for download to work?

kizniche commented 4 years ago

I'm not incredibly familiar with using downlinks. I'll look into it.

HouzuoGuo commented 4 years ago

thanks :)