First Steps with eduArdu workshop on 15th of December!

eduArdu

On December 15th together with our friends from TuxCon we will make workshop with our new educational board eduArdu in Olimex training building.

If you want to be part of this even come and join us, the event is free to participate.

We will show you how to use all eduArdu features with Arduino and Snap.

Be prepared to play games with fruits and people-touch, to make animations with LED matrix, to generate music, detect intruders with the PIR sensors, to switch on and off air conditioners and even create music instruments!

Educators may apply for free board which to receive at this event.

 

NB-IoT event organized by Comet electronics on December 4th

LTE_NB-IOT

NB-IoT is one of the promising LPWAN technologies I review in both my Industry 4.0 and OpenFest 2018 talks.

It’s lightweight LTE technology which has only 48 bytes of payload and 30kbps up and down link. Some call it 0G.

NB-IoT is specified by 3GPP standartization organization, same which standartize 2G/3G/4G/5G. It works flawless with existing cellular technologies with simplified RF and processing.

With these high speeds and small payloads the average consumption of NB-IoT make it more efficient even than LoRa, but there is many things to consider in your design.

First is that NB-IoT never will reach LoRa price point, it will be always about x2 more expensive.

Second – some modules like for instance the popular Ublox SARA-N2  which cost EUR 11 for 250 pcs, can’t work at lower than 2.75V power supply. Most Lithium batteries capacity is quoted with battery discharge from 3V to 2V so these modules will work only with fraction of the capacity of Lithium batteries. They are designed to operate from 2.75 to 4.2V i.e. targeting LiPO re-chargeable batteries, but these will never stay charged for 10 years as NB-IoT technology promises, so this is really odd design choice by Ublox.

Another thing to take into consideration is the high current pulses which LTE technology introduce (up to 2A when link is established). So even on paper NB-IoT to looks better than LoRa it still could be implemented with compromises where these benefits to be not seen.

Fortunately some Chinese vendors (like Quectel) made their modules BC66 to work from 2.1V.

Comet Electronics is organizing on December 4th NB-IoT event together with the first cellular operator which implements NB-IoT connectivity in Bulgaria – A1 and with Chinese module supplier Quectel.

It would be interesting to touch and evaluate this technology which is relatively new, has no infrastructure and is dependent by subscription fees only.

NB-IoT Gateways are not expensive and cost about $2000, but you can’t use them unless you have licensee to operate at GSM frequency (and these licensees cost millions of EUROs at least here in Bulgaria) so you can use your gateway only in Faraday cage :). This is where LoRa technology shine and this is what makes it so popular! No subscription, no fees for data transport, everyone can run his own gateway.

This is also one of the reason NB-IoT infrastructure is not so well developed – the investment is small, but the mobile operators still can’t figure out how to squeeze money out of this. There are already several providers on the net which sell NB-IoT SIM cards with EU roaming and with low cost like $12 per year, but local operators will find a way to shut these down and take their share.

Electronica 2018 highlights – AI, Smart Solutions, Communication and Security

electronica2018

Electronica in Munich trade fair is the most important meeting place for the electronics industry. Last week more than 3000 exhibitors and 80 000 visitors met together .

What was very visible this years is that beside the traditional big number of German companies the second biggest by number of companies exhibitor was China. There were both big:

cnbig

 

and small companies:

cnsmall

Artificial intelligence, Machine Learning, Smart solutions, Connectivity and security were dominating topics among the exhibitors.

LoRa and NB-IoT solutions were present on almost every fifth booth 🙂

The slides from Industry 4.0 meeting in Stuttgart are online

zve-frauenhofer

Open Source / Free Software for Effective Industry 4.0 Meetup  organized by Nexedi GmbH  and hosted by Fraunhofer IAO was held on 12th of November in Stuttgart.

There were quite interesting talks mostly focused on Open Source Technologies and their possible use in Industry 4.0.

My slides are now uploaded at Slideshare.

The biggest FOSS/OSHW event in Bulgaria – Open Fest is 3-4 of November

Screenshot from 2018-10-11 08-20-10

Our favorite Open Source event – OpenFest is approaching. Every time I go there I do wonder how small Bulgaria attracts so many people there – thousands of people meet together. Probably the answer is that IT is developing very well and lot of people in Bulgaria work in IT industry.

I’m really pleased to announce that my proposal to talk about LoRa/TTN/LoRaWAN myths, possibilities, applications and limitations is approved! I will try to compare all popular LPWAN solutions, why LoRa is leading there (hint: open source 😉 ) and how you can calculate your power requirements, link budged etc to make sure your application will work with years on battery.

Open Source / Free Software for Effective Industry 4.0 Meetup by Nexedi GmbH and Fraunhofer IAO on November 12th, 2018 in Stuttgart with Amarisoft, Linutronix, Olimex and Télécom ParisTech

Smart-Factory

On 12th of November in Stuttgart at Fraunhofer IAO (Nobelstraße 12, 70569 Stuttgart, GERMANY) will be held “Open Source / Free Software for Effective Industry 4.0 Meetup”  organized by Nexedi GmbH and hosted by Fraunhofer IAO.

Olimex will present there Open Hardware solutions for Industrial Automation.

 

 

More Tuxcon activities in Plovdiv

homeapp

Tuxcon is non for profit organization run by volunteers, with goal to promote open source technology in Plovdiv.

Once per year this organization make Tuxcon conference, but this year they didn’t stop with just this event.

In May they made with the help of Smarty Kids workshop for kids, where introduction to programming of Arduino and ESP8266 boards was present :

kids

TuxCon 2018 was in June and had so many proposals for talks this year, that the two halls couldn’t accommodate them all.

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So in July one separate event for Home automation was made with Miroslav Petrov.

mqtt

Miroslav talked about Domoticz and how to install it on A20-OLinuXino-MICRO:

a20

Special tanks to the good people from Siteground for hosting this event.

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This event attracted many people not only from Plovdiv:

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For those who didn’t manage to come here is the Miroslav’s workshop web page.

What I hear is that the success of these events encourage the Tuxcon organizers to think about to make such every month 🙂 Keep the good work!

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