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 ?
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.
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.
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.
The HopeRF RFM95w module proposes to access LoRa at low cost. Its unitary price is around 4€ on shop like aliexpress. A version with a shield is also existing. Its name is Lora1276-C1 from niceRF. These different transceivers are using Semtech SX1276 chip. It makes this kind of chip interesting for regional low cost LoRaWAN design in association with a MCU. Here we are going to use it with an Arduino platform.
For the second year I had the chance to introduce the IoT and LPWAN networks to a group of 150 students in computer engineering school. This year we add a longer time to detail a bit the Sigfox and LoRaWan solution and I’ve added a part on the IoT security.
I’ve tried to propose a different point of view on security aspect, not based on fear but practical things to do and a larger contextual aspect. I’ll try to make video on this specific topic on my Youtube (where you can find in french most of the content of these slides).
So … here are the slides, for my students who joined or not the conferences, and for those who would like to join this course.
After having tested different LoRaWan gateway like Kerlink iFemToCell, TheThingsGateway and Kerlink Wirnet, in the past two years, I was looking for a new low cost indoor gateway for deploying TheThingsNetwork (the global crowd-sourced LoRaWan network) in my city.
Gateway are not all easy to shop, Kerlink at first. As one of my iFemToCell has burned into the hell this summer with no reason after only 3 months powered-on I was not looking for the same. TheThingsGateway has different semiconductor provider reseller but myne suffer of certain instabilities actually and I need to reboot on regular basis. So that’s the reason of this new try.
Let’s see how to setup on TTN.
Posted in LoRa
Tagged IoT, LoRaWAN
After making some post on Arduino MKRFOX1200, here I come with the first steps to use MKRWAN1300 board to send your first frame on TTN and also how to use them for discovering the TTN coverage around.
MKRWAN1300 board is a LoRaWan Arduino board based on the Murata CMWX1ZZABZ module. This module is capable for LoRaWan in Europe (868Mhz), NA (915MHz) Asia (923MHz) …. It is also capable for Sigfox in both zone (but actually not with this board as much as I know). Producing 14dB emission and capable for 20dB emission for FCC zone. The price of the Arduino board is about 40€ and it is largely available on Internet.
In this post we are going to see how to make the first steps with this board and create a device to map the TTN network coverage with and without a GPS.