# Multiple LoRa nodes collosion

**URL:** <https://discourse.nodered.org/t/multiple-lora-nodes-collosion/21906>\
**Category:** General\
**Created:** [18 February 2020 09:32 UTC](https://discourse.nodered.org/t/multiple-lora-nodes-collosion/21906 "2020-02-18T09:32:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![saeed1](https://avatars.discourse-cdn.com/v4/letter/s/838e76/32.png) [@saeed1](https://discourse.nodered.org/u/saeed1)\
**Post date:** [18 February 2020 09:32 UTC](https://discourse.nodered.org/t/multiple-lora-nodes-collosion/21906/1 "2020-02-18T09:32:34Z")

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I am afraid ist not the proper Forum.

I am taking data from a remote sensor via LoRa. I am receiving with a single channel Gateway. Then i am sending that data to node-red. Then into InfluxDB. Finally i am displaying it via Grafana.

1. End node (Arduino UNO+LoRa Shield v1.4 + dht11)
2. Gateway (Arduino UNO+LoRa Shield v1.4+Ethernet Shield)

I am using RadioHead library and PubSubClient library. I have multiple end nodes. My Question is how can i avoid the data collosion, if my end node transmit data at the very same time????

Thank you.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [18 April 2020 09:32 UTC](https://discourse.nodered.org/t/multiple-lora-nodes-collosion/21906/2 "2020-04-18T09:32:37Z")

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Closed on 18 April 2020 09:32 UTC

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