CongducPham / LowCostLoRaGw

Low-cost LoRa IoT & gateway with SX12XX (SX1261/62/68; SX1272/76/77/78/79; SX1280/81), RaspberryPI and Arduino boards
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Lora Low Range issue in SX1272 module #24

Open arjun1307 opened 8 years ago

arjun1307 commented 8 years ago

Hi, I'm trying to build LoRa communication gateway.For this,I used raspberryPi and Semtech SX1272 LoRa module.I can send and receive the message.But when I tested the range I am getting an extremely low range in Line of Sight.Also, I tested the range by placing two modules in two different room separating a closed door.but I couldn't get the gateway to communicate.I have read that the Lora can penetrate obstacles.But I couldn't . The configuration for Lora is as follows: void setup() { e = sx1272.ON(); e = sx1272.setMode(1); e = sx1272.setHeaderON(); e = sx1272.setChannel(CH_12_868); e = sx1272.setCRC_ON(); e = sx1272.setPower('M'); e = sx1272.setNodeAddress(3); delay(1000); } I also tried with setPower('x').but not have any progress .what I am missing .

CongducPham commented 8 years ago

What is the radio module that you use?

Le 27/07/16 à 05:58, arjun1307 a écrit :

Hi, I'm trying to build LoRa communication gateway.For this,I used raspberryPi and Semtech SX1272 LoRa module.I can send and receive the message.But when I tested the range I am getting an extremely low range in Line of Sight.Also, I tested the range by placing two modules in two different room separating a closed door.but I couldn't get the gateway to communicate.I have read that the Lora can penetrate obstacles.But I couldn't . The configuration for Lora is as follows: |void setup() { e = sx1272.ON(); e = sx1272.setMode(1); e = sx1272.setHeaderON(); e = sx1272.setChannel(CH_12_868); e = sx1272.setCRC_ON(); e = sx1272.setPower('M'); e = sx1272.setNodeAddress(3); delay(1000); |}``

I also tried with setPower('x').but not have any progress .what I am missing .

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C. Pham.

------------ Congduc PHAM - Professor -------------------------- LIUPPA - Equipe T2I U.P.P.A. Pau http://liuppa.univ-pau.fr/ http://www.univ-pau.fr
UPPA, LIUPPA laboratory, UFR Sciences et Techniques
Avenue de l'Université - BP 1155
64013 PAU CEDEX, FRANCE
phone: 33 5 59 40 75 94
fax: 33 5 59 40 76 54
Congduc.Pham@univ-pau.fr http://www.univ-pau.fr/~cpham
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arjun1307 commented 8 years ago

I am using Semtech SX1272 RF1 http://au.rs-online.com/web/p/radio-frequency-development-kits/9225873/

CongducPham commented 8 years ago

I haven't tested this board. I believe its design is a bit special because it is intended as a dev board. There is a split TX/RX path that should be controlled by an RXTX pin which is not supported by our library. Don't know however your issue comes from this or not. This board uses the PA_BOOST so setting power should be done with "X". But once again, maybe it is the RXTX switch that cause the issue, at both sender and receiver.

Le 27/07/16 à 08:36, arjun1307 a écrit :

I am using Semtech SX1272 RF1 http://au.rs-online.com/web/p/radio-frequency-development-kits/9225873/

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/CongducPham/LowCostLoRaGw/issues/24#issuecomment-235499381, or mute the thread https://github.com/notifications/unsubscribe-auth/ABNEN_5LYKmNk5D4VuULWrZxRqrtQgGrks5qZvxXgaJpZM4JV0Fh.

C. Pham.

------------ Congduc PHAM - Professor -------------------------- LIUPPA - Equipe T2I U.P.P.A. Pau http://liuppa.univ-pau.fr/ http://www.univ-pau.fr
UPPA, LIUPPA laboratory, UFR Sciences et Techniques
Avenue de l'Université - BP 1155
64013 PAU CEDEX, FRANCE
phone: 33 5 59 40 75 94
fax: 33 5 59 40 76 54
Congduc.Pham@univ-pau.fr http://www.univ-pau.fr/~cpham
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arjun1307 commented 8 years ago

Hi.I could solve it.Now i can send and receive data over long distance with obstacle.Thank you for your support.

gotititu commented 8 years ago

Hi Arjun,

Please share it with the community on how you solved it. That is how you give it back to the Open source community :)