LoRaWan solar gateway monitoring

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In a previous post, I’ve been introduce my home made LoRaWan solar powered outdoor gateway. I’ve been investigating on the minimal hardware to make it running and reach some interesting result in my garden ;). Now it’s time to deploy the gateway on the field (basically on a roof top) and this means I’ll not be able to continue to learn what how it evolves over time.

For this reason, I’ve made a small project to monitor the main elements I want to track about this gateway:

  • Battery Voltage
  • Battery in & out power
  • 5V powering availability
  • Temperature

For this I’ve selected a simple and LoRaWan all-included Arduino platform I already detailed in a previous post: the LoRa Radio Node. Let’s detail this project now available on github.

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Contact less connected thermometer

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I’ve recently made a post on how to make a pandemic alarming system based on low cost connected thermometers. This post was more about the organization model and business model than the technological solution and implementation. So I also wanted to continue to investigate the connected thermometer solution, mainly for the fun. As I’ve been sponsored by digitspace.com for some free hardware, it has been the opportunity for testing contact-less thermometers module.

The design I’m going to propose in this post will not apply to the low-cost connected thermometers as the technology I’m going to use is far more expensive to the one I proposed in my previous post.

That said, this design can be useful for companies, public site or free access thermometer booth anyone would like to design at low cost.

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Sigfox MOOC

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For the French audience, I’ve just published a Mooc on Sigfox technology with a practical based on the Arduino MKRFox1200 board. You can watch it for free on Youtube Disk91 Sigfox Mooc. There are 16 short episodes, published every day at 6:15pm french time.

IoT Decoded Podcast EP#7

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IoT decoded #7, the monthly LPWAn podcast analyzing the IoT news and trends. Register to podcast : looking for feed subscription on bottom right of this web page or search for IoT Decoded on Apple Podcast application.

This month the podcast is addressing news on:

  • STM32WL LoRaWan chip
  • Seong Ji (Wisol) Sigfox module SRM100A
  • Module market evolution on Sigfox
  • The Things Virtual Conference
  • IoT and pandemic
  • Sigfox Low cost design success transmission on RCZ2
  • Short other news.

The musical theme is Cascade by Kubbi (CC)

What IoT can make against pandemics ?

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Pandemic prevention and management is an interesting territory for IoT. I’ve seen different projects and solutions made in emergency to help during the Covid-19 crisis like some connected button distributed in hospitals to get assistance for going to toilets. That’s an interesting use case for IoT where you can deploy quickly a solution (20K have been produced in this example) and make it working in an existing environment (an hospital) with no integration complexity with network or other existing infrastructures.

My favorite example is the Us health Weather Map reporting the human temperature sensor information across the USA. I love this use-case because it works on prevention: detecting the rise of the pandemic, show its movement and scale. The current problem is that these data comes from high-end thermometers, using Bluetooth and the number of device is limited. The other problem are the personal information attached to these device.

This is where LPWAN and Sigfox in particular can be used to propose a innovative solution I’m going to detail a bit.

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Monitor a gateway connected to The Things Network

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I’ve published a post in January 2019 on a solution to alarm you TTN gateway. It was based on noc API but these API have been deprecated. It means this solution is not working anymore.

So I’m investigating some new solution: the more relevant is the use of TTN cli solution.

Let’s seen what can we do with this.

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Low-cost outdoor solar powered LoRaWan Gateway

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I really love Reece Innovation Solar powered pod product developed by my friend Jose Marcelino. They’ve made a agricultural / industrial autonomous solar powered LoRaWan gateway for a really competitive price. With much more money to extend TheThingsNetwork in my city I would have used a such solution. But as this is just a hobby for me, I’m looking for really low cost solution, something under 500€ per gateway.

My main issue to extend the network is not really to find roof but to find some where I can pass an Ethernet cable and provide the power from it. I have some place where I could deploy new gateway in conduction to be cable-less. The network is not the main issue as most of the time a WiFi network is accessible. Powering is a larger problem to solve. Advantages of outdoor gateway: you have sun available. So, as Reece Innovation did, I decided to make my solar gateway, the main differences are: my will have no LTE communication capability (only WiFi) and it have to cost as less as possible.

Let see what I’ve done

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MikroTik LoRa8 Gateway

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I’ve been talking about this ultra low cost LoRaWan gateway in last October and ordered one. The time to get it has been long as it has been arrived in February this year. This sounds due to an early ordering as the product is now available, even on Amazon for a price under 180€.

This price is not so low if you compare to a Laird Sentrius but we are not talking the same product ! Here we have an outdoor gateway with PoE powering. That’s really interesting. The only missing thing is a LTE communication.

This gateway exists in two different version LoRa8 for 868Mhz zones and LoRa9 for 902 MHz zone.

Let’s see it in detail and find how to configure it for joining TTN.

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