Here is the update of my IoT slide collection, which now approaches 400 slides that you are free to reuse. In this new edition, you will find technical elements on Meshtastic, Mioty, DePin, LoRa updates throughout, and a few introductory slides on blockchains. However, on this point, my new deck, published a few days ago, is more relevant.
As usual, to go further, you can find video content on my Youtube channel, like my new MooC about Block Chain and my IoT MooC (long version) posted this year.
The choice of an STM32WL microcontroller precludes the use of internal EEPROM, requiring the use of either an external EEPROM or the internal Flash memory for storing persistent data. The latter option is often favored in many designs (and modems) for cost reasons, though it comes with certain implications.
Using networks like LoRaWAN and Sigfox involves regular persistent writes. In the case of LoRaWAN, using OTAA (Over-The-Air Activation) mode, the devNonce must be recorded during each join procedure to ensure its uniqueness over network connections. Here, the number of persistent memory writes will theoretically be low (except for the battery end-of-life scenario discussed later). For an ABP (Activation By Personalization) connection, the situation differs significantly; the frame counter (FCnt) must be recorded so that it does not reset to zero in the event of a reboot. The same applies to Sigfox and its SeqId, which must increment with each communication. Without specific logic, LoRaWAN ABP and Sigfox will write to persistent memory with each data transmission.
While an EEPROM memory area has a lifespan of about 100,000 to 1,000,000 cycles (still potentially lower than the number of messages sent during the object’s lifecycle), a Flash memory area lasts only 10,000 writes, a number quickly reached in IoT communications. Therefore, using Flash as persistent storage requires a different approach compared to EEPROM in this context.
Two years since I did not published my IoT slide deck. Here is the new version, now about 345 slides about IoT topics including Sigfox, LoRaWan, Helium and much more. In this edition, you will also find some slide about the digital transformation impact on the society and the environmental impact.
All the slides on this deck can be freely reused for any educational content; Most of them are also used in my different MooC you can fin on my Youtube IoT Channel
Recently, on Linkedin, I reacted on a publication that is looking like this one. I’m used to react on LPWAN publication when they are comparing technologies as this one. Comparing apples with eggs and usually meaningless. This one was particularly interesting me because, most of the content is non-sense and scientifically subject to discussion. I’ll detail it in this blog post.
It’s really interesting the way it has been made and also the way the author publish it, react on it on Linkedin and what objectif is serves : capture people in a world where the truth is adapted to make you think only one of the technologies serves all the possible use-cases and all the others are the worst existing. The purpose is to sell you some books and services. This is really looking like the way flat hearth believers, radio waves danger believers and other groups do to find adepts and to sell goods to them. It’s really funny to see and discuss.
As the Author of the original document above considers his slide as “art” you can’t use, copy, cut (even if he published it online on social network) I have made my own one and simplify it to not entering in the expecting promotion this guy is looking for and to troll on the social networks. The curve you see are the exact copy of the original one. These data seems to come from a university work and are needed to be debunked. I just not mention the highlighted technologies other than Sigfox and LoRaWan because they are the one the slide tries to discredit and we will see how that’s wrong.
I do not identify the original author of that “artistic work” because I consider the scientific aspect of that “work” so bad that it discredit too much this person, its student and the associated university, that I don’t want to discredit these people directly. As I did on Linked-in but the author has immediately identify itself to start its promotion.
As I did not had access to the full study, sources of these graph, I can’t tell if the initial work quality that as been done is bad or if the context of the experience is explained. May be the original document explains different conclusions, so I’ll try to not judge too much the original work that has been done. I’ll judge what the author of the slide gave to us, as a single slide with pseudo-scientific information and a fake conclusion. Apparently, if you are ready to pay for the book / register… , you can get more details, thing I do not want to do to feed the troll.
Since yesterday, the microcosm of the IoT has been in turmoil, Sigfox, the Toulouse company, pioneer of the Internet of Objects, the one which had carried out remarkable fundraising for France: 100M then 150M is placed in receivership. But is it really a surprise? Is this the end of this technology?
On regular basis, I’m updating my IoT slide-deck used for trainings, MooC and conferences. You can find in the attached pdf more than 260 slides about IoT market, use-cases and technologies.
Feel free to use it for your own training, presentations, content is free to use, please just place a link to this website as a counterpart.
Sigfox Connect is usually one of the MAIN EVENT for the LPWAN community as the technical solutions provided by Sigfox were, in the last 5 years, the one presenting disruptive innovations around low power radio communications suporting the IoT revolution. I was usually rushing on my blog to communicate and explain how these innovations could transform our markets…
This year in 2020, I’ve made 5 days before starting to write something because, I see nothing really interesting to tell about this event, at least on the technical side. I could fill many pages on the quality of the event, starting by the backgrounds, the phone ringing in background, even on recorded conferences and the number of conferences about the same topic (supply chain). Christophe Fourtet had a great talk… for Sigfox beginner… and my preferred event’s backgrounds. But what about the yellow texts scrolling ?!? WTF !
So, I could write tons of line on this topic, but let’s try to go to the only and main announcement of this year, nothing technical, something like a company business pivot. Basically, after watching Ludovic conference, I had to refer to the only one online press post to understand what it was about. The morning keynote had some of the elements related to it but honestly I give the same to my IoT students on the first 30 minutes, so for the vision I’ve been a bit disappointed. You can check my IoT slidedeck.
Traditional update of my teaching support on IoT. This year I’ve addressed my speak to larger and different audiences. As a consequence I publish a totally renewed slide-deck with 203 slides. I’ve improved the IoT business model description, use-cases and technology area. I also detailed the platform side of the IoT solutions.
Feel free to reuse this content for your own conference and speak. I’m available for conference, talk … let me know.
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