Questions tagged [lora]

For questions about the low-level LoRa wireless radio modulation. Use a more specific tag when asking about network protocols that are using LoRa, such as DASH7, LoRaWAN, Sigfox and Symphony Link.

Filter by
Sorted by
Tagged with
12
votes
5answers
1k views

Is Bluetooth a good enough protocol for "lost my keys" beacons?

Bluetooth beacons for localizing lost objects are beginning to spread. You can locate them using an app on your smartphone (yes, and create an account, share on facebook your objects, ...) with a ...
11
votes
2answers
677 views

Spreading Factor of LoRa

I am new to LoRa technology and I was reading it's technical specifications on the lora-alliance.org website. In the document, the SF is always considered between 7-12. What is the reason behind not ...
10
votes
3answers
4k views

Is a range of 50 km+ possible in LoRa?

I read this article which said I could get upto 50 km with a LoRa module. But when I read the product description it says the in-built range is only 16 km, so I obviously need an antenna. But what ...
10
votes
3answers
9k views

How can I interface a LoraWan network with MQTT?

I have been working on a project which involves creating a LoraWan network using: Dragino lg01 as a Gateway. An Arduino Uno and a Dragino Lora shield with a simple LM35 Temperature sensor As for the ...
10
votes
2answers
2k views

Configuring LoraWan Gateway

I'm trying to build a LoRaWan Network using a sensor programmable with Arduino and a Dragino Lora Shield. I have found many solutions for creating a gateway, including an Raspberry Pi connected with ...
8
votes
2answers
1k views

MTAC-LORA-H-868: Can I use without an antenna?

I recently received MultiConnect Gateway (GW) + MTAC-LORA-H-868 but the problem is that I didn't receive any antennas. I need to setup LoRa Gateway ASAP. I'm new to LoRa and I have a few questions. ...
8
votes
2answers
275 views

Suitable wireless technologies for high density industrial IoT

I have a requirement to design M2M communication devices for a factory which has 1000 nodes (machines) within 100m of each other. The devices will be wired to get power and will transmit a payload of ...
8
votes
3answers
2k views

LoRa - Creating a personal network to track cars

So, I have two single channel LoRa/GPS modules and I want to create my own personal network... So I want a module that receives all data from other devices ans sends it to a server with a database.. ...
8
votes
1answer
10k views

What is the maximum Packet Size of a LoraWan including the phy headers

I created a LoRa to USB pass-through via Arduino in order to use it as a temporary gateway for development purposes. So somehow I need to know how big a LoRa packet including PHY headers is, in order ...
8
votes
2answers
89 views

Requirement for a mesh network using Zigbee or similar technology

I have a requirement to design a proprietary monitoring system. (There's some intellectual property involved so I'll describe the system with a slightly altered purpose.) Imagine a large factory ...
7
votes
4answers
3k views

Is it a good option to send images over LoRa network?

LoRa (Long Range) technology is one of the promising technology which offers long range communication with low power consumption. Therefore when building a device that can be deployed in a no ...
7
votes
3answers
123 views

Ultra Low Energy point-to-point protocol choice

I am lost in a forest of IoT protocols and need help. I'm looking for right hardware and protocol for my application. I would like to make a device of my own, but use an existing stack and hopefully ...
7
votes
2answers
2k views

LoRaWAN Multicasting

Is there any real implementation of LoRaWAN multicasting? According to v1.0.2 LoRaWAN specification it is possible to send multicast frames but I have not found neither a node nor a network server for ...
7
votes
1answer
71 views

Cannnot send from Arduino to Raspberry pi via LoRa

I am trying to send messages from my Arduino to my Raspberry pi. But I don't understand why the pi isn't receiving the messages. On the Arduino side I'm using an Arduino UNO with a Dragino Lora/GPS ...
6
votes
2answers
189 views

Can I connect my devices to the Cambridge Intelligent City Platform?

According to Cambridge News, a LoRaWAN network has recently been set up in Cambridge for the 'Intelligent City Plaform'—essentially, a smart city platform for IoT devices to sense and influence the ...
6
votes
2answers
162 views

Encrypting sensor data on Raspberry Pi?

I am sending sensor data between two Raspberry Pis via lora. I am using two Lora Radios and NOT using a LoraWan network like The Things Network. How should I encrypt my data? Are there any open source ...
6
votes
2answers
950 views

Using television Yagi antenna on a public homemade LoraWan gateway

I thought it would be nice to setup my own LoraWan public Gateway in order to extend "The Things Network" network. But in order to do that I think that I will need to use a proper antenna in order to ...
6
votes
1answer
322 views

Increasing the range of an RF module

I am working with a RF-LORA-SO 868Mhz module. I read this article that says the range of this module could go up to 50km. But I would need to connect an antenna to my LoRa module. This article I ...
6
votes
1answer
109 views

Protocol for over 300 metres and minimum of 20 kbytes datarate?

We are trying to choose the most suitable connection protocol for wearable devices, with the following constraints: 300 - 500 devices will simultaneously connect About 1 km2 site area—coverage is ...
6
votes
2answers
209 views

Is there a way to create WiFi with one Access Point, which should cover a big building?

I need to create a WiFi network(or other types e.g. LoRa) for IoT devices, inside a building. The Building has three floors, each about 250 square meters. The main constraint is that I can't use any ...
6
votes
1answer
108 views

What is wrong with this MQTT-SN bridge?

I am using this MQTT-SN bridge, with no changes except that I rigged it to give a hex dump of the buffer if it does not contain a valid MQTT-SN packet. I am experiencing a strange problem: sometimes ...
6
votes
1answer
2k views

Using Arduino LoRa with RFM9X chipset: How to connect the RMF9x NSS pin?

As I am searching on libraries that can be used with Lora and arduino I came across on this one: https://github.com/sandeepmistry/arduino-LoRa Also the RFM9x has the following pinout: The data ...
6
votes
1answer
189 views

How to increase the Lora range using a LoStik?

I know this is a common question but I am wondering how to increase range on my Lora 'LoStik' device. https://www.crowdsupply.com/ronoth/lostik I am trying to send data from one LoStik to another. ...
5
votes
1answer
166 views

Is it possible to share an Application between two or more LoRa Gateways using TTN?

I have a GPS Tracker application which periodically sends Latitude, Longitude, Altitude to a LoRa Gateway. I am using the The Things Network and sending the data via the OTAA method which provides ...
5
votes
1answer
2k views

Arduino LMIC: Figuring out when packet transmission has been started on Chip

I use the following example of an ABP-activated LoRaWaN node: https://github.com/matthijskooijman/arduino-lmic/blob/master/examples/ttn-otaa/ttn-otaa.ino But for some reason I cannot figure out when ...
5
votes
1answer
128 views

Lo.Ra and Lo.RaWan: Why is a gateway needed?

As I was looking information regarding Lo.Ra and Lo.RaWAN over these links: http://www.instructables.com/id/Introducing-LoRa-/ https://www.link-labs.com/blog/what-is-lora https://www.quora.com/What-...
5
votes
1answer
1k views

The Things Network - Pricing

I am planning to use The Things Network for my next project with around 50 LoRa nodes geographically distributed in an area. I am wondering is LoRaWAN free to use - provided we buy LoRaWAN gateway ...
4
votes
2answers
1k views

Using Raspberry Pi as a Lora Node for a TTN setup

I already have a LoRa gateway that I made using a NodeMcu with ESP8266 and now I want to send data from a Raspberry Pi 3 through that gateway to the TTN. The first thing that I did was to connect ...
4
votes
1answer
840 views

How does LoRa based geolocation work? How does it measure distance?

The speaker in the video Richard Lansdowne - LoRa Geolocation mentions straight-off that he won't be quoting an accuracy for geolocation using LoRa, and it's of course not the ideal signal you would ...
4
votes
1answer
39 views

Can I send messages from LORIOT to an HTTP web server?

I actually send data packet from LORIOT and TTN to Cayenne. I would understand if is possible to send instead data from Loriot or TTN to my custom http web server, if there is any procedure around ...
4
votes
1answer
135 views

(Multitech mDot + Conduit) mDot keeps dropping connection to network

If anybody has experience the Multitech mDot and Conduit modules to set up a LoRa network I could use their help. I’ve set up a LoRa network consisting of an mDot node (plugged into a Multitech ...
4
votes
1answer
91 views

Microchip RN2903: TX/RX distance with internal antenna

My question is about the maximum transmission distance achieved with the Microchip SoC RN2903, only using its internal antenna. I've been doing field tests in urban environments, with this module and ...
4
votes
0answers
45 views

How we can interface LoRa(RFM96W) with STM32F030 controller?

I have tested my RF96W LoRa boards with the Lolin Boards, it works fine. However when I interface these Lora boards with a stm32f030r8t6 based controller, I don't receive any data, although I have ...
3
votes
1answer
551 views

RFM69W and LoraWan

I'm trying to figure out how I will make an RFM69W LoRa Module work with The Things Network, so I looked over many tutorials, code samples, and libraries. The one I find closest to LoRaWan support is: ...
3
votes
1answer
215 views

The Things Network AWS IoT integration

I have followed the tutorial for the AWS integration but cannot get the MQTT messages to display in the AWS IoT Core. I assume bridging is not working since I can get the messages in an external ...
3
votes
1answer
3k views

Communicate with MQTT over LoRa

I have two Raspberry Pis with a LoRa module each (Microchip RN2483, connected over serial). How do I tell MQTT (in Python) to use the LoRa motes (/dev/ttyAMC0) instead of Ethernet or Wi-Fi?
3
votes
2answers
152 views

How to send data collected by two different sensors simultaneously?

I have two different sensors connected to my Raspberry pi and I have to send the data to other device. The transmission of data is through wireless network. I have been asked to send the data in ...
3
votes
1answer
124 views

Why there is no LPWAN technology in HF or VHF band?

This is a question which I have been wondering ever since I started exploring LPWAN technologies. All the LPWAN technologies I have found (like SigFox, LoRa, Ingenu etc.) work in UHF band (300 - 3,...
3
votes
1answer
390 views

LORA VS NRF24L01

I want to chooses between nrf24l01 and lora-ra02 for my smart home project The following parameters are very important to me distance range (covering an area of 400 square meters) Ability to cross ...
3
votes
1answer
207 views

How does endianness work in LoRaWAN1.1?

On Page 9 in the LoRaWAN 1.1. specification it says: The over-the-air octet order for all multi-octet fields is little endian. EUI are 8 bytes multi-octet fields and are transmitted as little endian. ...
3
votes
2answers
85 views

Arduino LMIC: GPS Logger - old coordinates stuck in queue

I'm building a LoRaWAN GPS Logger using the Arduino LMIC Library. I've got a running solution which reads GPS coordinates and transmits them via LoRaWAN to TTN. For activation, I'm using OTAA. On TTN, ...
3
votes
0answers
39 views

How will the Proxima I and II satellites use or test LoRa in space?

IoT Aukland Tweet references FleetSpace and launch of the Proxima I and II satellites. This put's the "W" in LoRaWan in a different perspective. How will these test LoRa in space? Is there any ...
2
votes
3answers
391 views

Receiving acknowledgement in LoRaWAN without affecting data transmission

Consider a LoRaWAN in which multiple nodes are attached to gateway. The page at link-labs states that, once a message has been delivered, there is no acknowledgement of receipt. However, nodes in ...
2
votes
1answer
74 views

Can LoRa end points communicate directly?

Can LoRa end points communicate directly? Or is a gateway/network server always required?
2
votes
2answers
90 views

LPWAN technology for remote environmental monitoring

What would be the most appropriate LPWAN technologies for environmental monitoring in a remote area, given the following: The monitoring system would be made up of 3 to 10 nodes located within a ...
2
votes
1answer
49 views

LoRa inventory application

As far as I know there is no smartphone with Lora builtin compatibility. I'm looking if I can build a inventory solution based on LoRa. Until today the solution was to use the NarrowBand (deprecated ...
2
votes
1answer
155 views

LoPy4 Gateway (LoRa RAW) connection to Raspberry Pi and AWS Cloud

I am attempting the following setup: Sensor--> I2C--> Pycom LoPy4(Node)-->LoRa-RAW-->Pycom LoPy4(Nano Gateway)-->RPi-->AWS I have established the LoRa RAW connection between the two LoPy4s, now I ...
2
votes
1answer
82 views

LoRa point-to-point communication

I would like to create a point-to-point connection between a LoRa temperature sensor and a M5 Stack (ESP32) with LoRa module. However, I am a beginner with LoRa, so I have a few questions: Are all ...
2
votes
1answer
77 views

LoRaWAN remote sensor node platform

Which platform can you recommend for a LoRa/LoRaWAN remote sensor node, which fulfills the following criteria? Detects presence of people in 15-minute interval (e.g. with a RCWL-0516) Reports the ...
2
votes
0answers
79 views

LPWAN technologies and Dash7

I need to transfer messages from node to gateway that would be at most 2km apart. I am currently working with 40 nodes that wake up every 1 minute. So I would like to have battery life of at least 3-...