The Things Node (no_free_ch)

Hello!

I am a newcomer in the TTN world.
I have a Gateway Dradino LORA HAT v1.4 (1channel) connected to a Raspberry Pi4, as well as a The Things Node 868MHz.
I have configured my Gateway as https://www.hackster.io/ChrisSamuelson/lora-raspberry-pi-single-channel-gateway-cheap-d57d36
with the following settings:

Summary

// SX1272 - Raspberry connections
int ssPin = 6;
int dio0 = 7;
int RST = 0;
// Set spreading factor (SF7 - SF12)
sf_t sf = SF7;
// Set center frequency
uint32_t freq = 868100000; // in Mhz! (868.1)
// define servers

#define SERVER1 “13.76.168.68” // router.eu.thethings.network
#define PORT 1700 // The port on which to send data

I took the Basic configuration in the Arduino IDE for the Node configuration and I still get in the console:

Sending: mac join otaa
Response is not OK: no_free_ch
Send join command failed

My questions are as follows:

  • Why do I have 2 different frequencies in the console gateway traffic (923.3MHz SF12 & 868.1MHz SF7)?
  • Is the address for server1 correct for europe (13.76.168.68)?
  • Is it normal that I don’t have a “time” for the Node’s Data application?
  • And above all … Why do I always receive “no_free_ch” in the console of the IDE?

application gateway

Sorry, a single-channel forwarder is not a proper gateway. It should not be used on TTN, and questions about that are not supported on this forum.

Please disconnect that single-channel forwarder from TTN, it may affect operations of other users.

A post was split to a new topic: Can I use a RAK2247 hat on a Pi 4, or on a Pi that is already running other software?