Tag Archives: LoRaWAN

The Things Indoor Gateway (TTIG)

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The Things Indoor Gateway (TTIG) has been announced and distributed during the TheThings conference 2019. Since it was impossible to get some, victim of its success (and the little initial stock). From mid-august it is now possible to get some and I’ve bought one as soon as possible.

The Things Indoor Gateway is a low cost (70€ – 90€), 8 channels (EU868 full gateway), LoRaWan gateway running on TheThingsNetwork. You can’t expect a large coverage with a such solution to be used for city wide network but it will be perfect for covering a large house or a small building where you want to deploy LoRaWan sensors.

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IoT Decoded Podcast EP#1

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First episode of my IoT podcast. This month is about IoT maket study and how numbers can be bullshit when comes from certain analyst. We also talk about the LoRaWan world distance record.

This first episode is a test, a poor and a bit dirty (or too long) episode for testing podcast concept on my blog. It is going to be a monthly rendez-vous on IoT and especially LPWAn news.

LoRaWan in US915 zone

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I’m living in RCZ1 (EU868) area and our zone have some specific rules for using the free radio frequencies like duty-cycle to comply regulation I already shared in the linked post. I was little experienced with the US zone regulations. Thanks to a project made for a North American customer I started working on it and I’ve surprised of the differences and how it impacts the LoRaWan developments.

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First steps with LoRa Radio Node (Arduino)

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The LoRa Radio Node is an AVR Arduino board with a RFM95 LoRa module. This all-in-one LoRa module allows to have a LoRaWan device for a reasonable price around 15€. You need to add a battery (like a LS14500 3,7V battery) on the battery holder for a 4€ extra cost to make it mobile. LiPo option are also available using the power connector. Even if the connectors are looking like grove, they are not compatible so you will have to make your own wiring to connect extensions.

This post is reviewing how to getting started with this board to fire your first LoRaWan frame over The Things Network.

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Yadom Murata CMWX1ZZABZ-091 breakout board under review

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Murata CMWX1ZZABZ chip is actually famous for being a powerful LoRaWan multi zone module also able to communicate over Sigfox.

I’ve already published a technical post on Murata CMWX1ZZAB chip in a previous post. You will also find an implementation based on my IoT SDK. Yadom has just released a breakout board ( BRKABZ01) for this chip making it accessible for hackers and for easier prototyping.

This post is going to review this board and demo how to access it really quickly. Are you ready ?

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Getting started with ST Murata LoRaWan board

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ST Micro-Electronics is providing a development board with a Murata CMWX1ZZABZ-091 chip. This device is a module containing a STM32L0 chip (192Kb of Flash / 20Kb of RAM) associated with a Semtech SX1276 radio chip. This module can be used as a SoC for developing LoRaWan IoT devices. The Semtech chip is also capable of Sigfox. This module is a bit expensive but it is actually the one allowing LoRaWan and Sigfox communication in any of the RCZ zones.

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Alarm your TheThingsNetwork gateway

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There is actually no solution to get an alarm when a TTN gateway is shutting down. That said, all the information are accessible thanks to the different API. 

To monitor my deployed gateways, I’ve made a little script in python working with IFTTT. It connects to the The Things Network api, get the gateway status and call the IFTTT webhook in case of last gateway update too old. 

On IFTTT i’ve created an applet to generate a Push notification on phone to get the alarm.

The script is accessible in the post detail.

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Make a Laird Sentrius an outdoor gateway

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The Laird Sentrius LoRaWan gateway is a low cost, stable and easy to configure on The Things Network gateway. They are indoor gateway. I want to install it outdoor to offer a better coverage.

In certain situation the easiest way to install it outdoor is to use an external antenna and a long antenna cable. In some other situation this approach is complex to implement and the easiest way is to install the gateway outdoor with its antenna and network connection.

The best is to use an outdoor LoRaWan gateway. The price is usually > 600€. Even if in general the outdoor gateways includes GPS and Cellphone connectivity. In this post I’ll explain how I make one of Laird Sentrius outdoor because it costs less than 250€ for the gateway itself.

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