Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Arduino Project with NB-IoT (3GPP) and LoRa / LoRaWAN
Top Forums Programming Arduino Project with NB-IoT (3GPP) and LoRa / LoRaWAN Post 303042555 by hicksd8 on Sunday 29th of December 2019 10:30:30 AM
Old 12-29-2019
Quote:
What, in your view, is the best wireless communications channel for passing data between from the underground parking garage (two levels below ground) to the top of a condo in the same building (27 floors up); with all the concrete in between?
Well that's quite a question. I bounced this on to a colleague of mine, Paul, to see what he said.

His reply:

Quote:
Arduino radio communication:

I haven't physically ever tried this, but I did research what was the most common radio link used for Arduino projects and I bought three transceiver pairs to try out. They're still on my bench, untested!

433Mhz RF Decoder Transmitter With Receiver Module Kit For ARM MCU Wireless - US$1.39|Shopping UK

I chose this version because the transmitter antenna can be added, rather than already being soldered on board.

Unsurprisingly it is Russian-based buyers who account for most purchases of these modules, and the reviews/feedback are poor in providing useful information.


SMETS2 meters have two (sometimes three) different transmission systems.

- Wide Area Network at either 400MHz (old ITV analogue) or Telefonica/Orange 3G GSM frequency

- In-home links to IHD and gas meter; Zigbee at 2.4GHz
which is now being augmented with 800MHz due to poor signal penetration

- sometimes a Mesh network in rural areas where Telefonica signal strength is low (I have this)

I also have a Honeywell wireless doorbell system in my house which is Mesh technology at 916.8MHz or 868MHz and is definitely better penetration than the 2.4GHz Zigbee.

I have no direct experience of LoRa, but I doubt that even this running at the lowest 433MHz could penetrate 30 floors. It's not the concrete which concerns me, but the steel reinforcing bars acting as a Faraday Cage.


If I was wanting to achieve this feat, I'd be fully expecting it to require "signal relay/filter/boosters" at intervals.


Paul
I assume that you are not allowed to attach anything to the building?

My initial thoughts:
1. Could you use existing power distribution wiring in the building to run ethernet over? e.g. Powerline adapters or similar.
2. Could you use a microwave link perhaps bounced off relay within the grounds.
3. Could you run a cable (or fibre optic) cable down the outside of the building?
4. Is there anything that would allow you to install a radio signal relay halfway down the building (eg, a friendly neighbor)

As I said, that's quite a question you've posed.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Use The Terminal To Test Arduino Is Working.

Hi all... (Apologies for any typos at all.) This is a step by step _script_ to check if your Arduino is talking to your Linux or Macbook Pro computer using the Terminal... It works on at least 3 Linux flavours and now the Macbook Pro... I hope you find it useful as a simple check for... (0 Replies)
Discussion started by: wisecracker
0 Replies

2. OS X (Apple)

Arduino Diecimila Board Access...

This is a very simple starter DEMO to access Arduino Diecimila Board for the Macbook Pro 13" OSX 10.7.5... A potentiometer is connected between 5V and Gnd with the wiper connected to ANALOG IN 0 on the Arduino. This was adjusted to give the Ms and Ls as seen... I now have DC in for this... (0 Replies)
Discussion started by: wisecracker
0 Replies

3. OS X (Apple)

Semi-Automatic Arduino Detection.

I am working on a semi-auto detection idea for Arduino for the Scope project. It does require a little user intervention but minimal. It works by just responding to two on screen prompts to unplug and plug Arduino into a USB port. There are two versions and both work perfectly well and give... (3 Replies)
Discussion started by: wisecracker
3 Replies

4. Programming

Arduino-cli - Uploading to Unknown Chinese Arduino Boards using the Arduino Command Line Interface

In my further exploration of Arduino, today I decided to install the arduino-cli on my mac today. https://github.com/arduino/arduino-cli I followed the instructions for macOS but when I got to this part: arduino-cli board list I got the dreaded "Unknown" Fully Qualified Board Name... (1 Reply)
Discussion started by: Neo
1 Replies

5. Programming

More Arduino Stuff...

HI all... (Apologies for any typos.) To add to Neo's Arduino subject matter I have decided to upload this in ".zip" format. Ignore "*.info" files these are AMIGA icons only and also the "HAM" drawer as these are photos in ancient AMIGA HAM modes. I have noticed that there are current... (6 Replies)
Discussion started by: wisecracker
6 Replies

6. Programming

Arduino UNIX Time - Syncing Computer UNIX Time to Arduino Time with Python

Just finished a quick Python script to send the current unix time over to the Arduino from macOS, so in the absence of GPS or some other way to get the unix timestamp (epoch time) to the Arduino, I can get my macOS and Arduino UNO synced to within a second. Normally, when the Arduino starts... (9 Replies)
Discussion started by: Neo
9 Replies

7. Programming

NB-IoT Arduino Shield from AIS (Thailand) First Impressions

Today I received my NB-IoT Arduino Shield for AIS (Thailand). Here is a "pinout" photo of the shield. My shield looks just like the one above, for the most part. I'll post another photo of the actual device later. When I received the shield in the mail, I went immediately to a local... (8 Replies)
Discussion started by: Neo
8 Replies

8. Programming

LoRaWAN, Dragino LG308 Gateway, and MicroPython - Quick Thoughts

Yesterday I had a chance to enjoy testing LoRaWAN with the owner of the M2M Shop who was kind enough to drive three hours down the seacoast to set up and test the Dragino LoRaWAN LG308 gateway operating on AS923MHz in Thailand. Ahead of K. Somsak's visit, he had asked me to install Thonny,... (0 Replies)
Discussion started by: Neo
0 Replies

9. Programming

Arduino Project: iPhone to HM-10 BLE to NB-IoT Shield to NB-IoT Network to Internet to Linux Server

This post describes a "work in progress" project I started today. Here is the High Level Overview: Currently, this project sits on my desk as an Arduino UNO (on the bottom), an NB-IoT Shield (sandwiched in the middle), a Sensor Shield (on top) with a HM-10 BLE Module (in the little... (13 Replies)
Discussion started by: Neo
13 Replies

10. Hardware

Arduino Robot Tank Project

Normally I'm not into kits, but I thought my wife would enjoy this one since she is a big fan of robots and droids on StarWars! We are done with the basic mechanical assembly and starting on the electronics assembly today. The robot's "brain" consists of three levels. The Arduino board, on... (5 Replies)
Discussion started by: Neo
5 Replies

LEARN ABOUT DEBIAN

rdf::query::algebra::project

RDF::Query::Algebra::Project(3pm)			User Contributed Perl Documentation			 RDF::Query::Algebra::Project(3pm)

NAME

       RDF::Query::Algebra::Project - Algebra class for projection

VERSION

       This document describes RDF::Query::Algebra::Project version 2.908.

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.

       "new ( $pattern, @vars_and_exprs )"
	   Returns a new Project structure.

       "construct_args"
	   Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.

       "pattern"
	   Returns the pattern to be sorted.

       "vars"
	   Returns the vars to be projected to.

       "sse"
	   Returns the SSE string for this algebra expression.

       "as_sparql"
	   Returns the SPARQL string for this algebra expression.

       "as_hash"
	   Returns the query as a nested set of plain data structures (no objects).

       "as_spin ( $model )"
	   Adds statements to the given model to represent this algebra object in the SPARQL Inferencing Notation (<http://www.spinrdf.org/>).

       "type"
	   Returns the type of this algebra expression.

       "referenced_variables"
	   Returns a list of the variable names used in this algebra expression.

       "bind_variables ( \%bound )"
	   Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values.

       "potentially_bound"
	   Returns a list of the variable names used in this algebra expression that will bind values during execution.

       "definite_variables"
	   Returns a list of the variable names that will be bound after evaluating this algebra expression.

       "is_solution_modifier"
	   Returns true if this node is a solution modifier.

AUTHOR

	Gregory Todd Williams <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31					 RDF::Query::Algebra::Project(3pm)
All times are GMT -4. The time now is 06:44 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy