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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.

7
votes
2answers
176 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 ...
1
vote
1answer
46 views

Connect sx1272 module to a Dragino Gateway

I am new to Lora technology. I am using a sx1272 Lora Module and I am trying to send and receive data to a Dragino Gateway. The problem is the sx1272 and Dragino use two different libraries and hence ...
0
votes
0answers
42 views

HC-SR04 Ultrasonic sensor confliction with LoRa shield

I am trying to send the sensor data (HC-SR04 ultrasonic sensor) from loRa client to LoRa server, but it seems that the loRa has occupied all of the digital pins and does not continue the loop and it ...
7
votes
0answers
35 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 ...
11
votes
1answer
245 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 ...
5
votes
1answer
356 views

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

I use the following example of an abp-activated lowawan node: https://github.com/matthijskooijman/arduino-lmic/blob/master/examples/ttn-otaa/ttn-otaa.ino But for some reason I cannot figure out when ...
1
vote
0answers
115 views

Semtech Lora Packet forwarder with Dragino Shield: How to configure the pins on packer forwarder?

As far I have seen that these links: USE LORA SHIELD AND RPI TO BUILD A LORAWAN GATEWAY LoRaWAN But they use an obsolete packer forwarder: https://github.com/tftelkamp/single_chan_pkt_fwd as a ...
5
votes
1answer
1k 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 ...
6
votes
1answer
304 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
2answers
252 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 ...
7
votes
3answers
83 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 ...
3
votes
1answer
112 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: ...
6
votes
1answer
74 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
61 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 ...
6
votes
3answers
666 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 ...
3
votes
1answer
115 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
95 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 ...
8
votes
2answers
383 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. ...
6
votes
1answer
88 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 ...
6
votes
2answers
131 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 ...
7
votes
3answers
801 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.. ...
2
votes
0answers
520 views

How do I get the MAC address of LoRa nodes? [closed]

I have some LoRa nodes (a Dragino LoRa Shield to append an Arduino Uno) and I want to connect them with a Dragino Gateway LG01-P. I need to take the MAC address (unique address) of my nodes but I don'...
6
votes
2answers
148 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 ...
7
votes
2answers
1k 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 ...
8
votes
1answer
4k 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
894 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 ...
11
votes
4answers
926 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 ...