OMG Lora receiving only 20% of packets sent to it

[svwhisper]

I've now had many days using the Lora gateway and am finding that only 20% of packets sent by a remote node are received by the gateway. This isn't a range issue, as I moved the sender within a few feet of the gateway and didn't see any improvement. The antenna on the gateway is a commercial-grade 433mHz external antenna. I coded the receive example in Mistry's repo and ran it on a Moteino. It received 100% of the packets.

I've verified that all the Lora parameters (freq, bandwidth, spreading factor, etc.) are aligned between nodes. I wonder if the gateway is busy doing something else when the packets arrive? I only have Lora functionality enabled, i.e. no other modules like BLE.

I will try to progress root cause through review of the code but wanted to report this now.

[1technophile]

thanks for this report. could you indicate what is the sender board and firmware please?

[svwhisper]

Sender is a Moteino Mega with RFM95 transceiver using Sandeep Mistry's Lora library.

[1technophile]

did you find a solution to your issue?

[svwhisper]

I didn't intend to close the issue. Not sure how that happened.

[Cloolalang]

Hey Florian, Congratulations on this great project! I have a Lora question: I have started with and ESP-32 and a RA-02 433MHz lora module. I have installed V0.9.2 Binary ok Reading the guide: https://github.com/1technophile/OpenMQTTGateway/wiki/User-guide-LORA I see that we can setup the transmitter parameters for the Lora transmissions. Is is possible to configure my Lora receive parameters as well? The reason I ask is that the default seems to be 868MHz, and mine needs to be set to 433MHz. I would really like to be able to do this via an MQTT command rather than re-compiling the ESP firmware. Best Wishes Patrick

[Cloolalang]

Hey, So After more research, I have it all working except I can only get the ESP32+RA-02 working both transmit and receive using the Lora.h library version 3.0.\

I was able to setup my Lora transmit and receiver parameters by MQTT (using MQTT explorer) to publish a retained message to the topic: home/OpenMQTTGateway/commands/MQTTtoLORA the following Json; {"message":"B","spreadingfactor":12,"signalbandwidth":125E3,"frequency":434.250E6,"preamblelength":5,"codingrate":5,"enablecrc":false}

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[nikito7]

Need to fix node to single channel