The last one is a scam 
Should table not reflect a standard area of coverage (then reflects density?) - I believe standard TTN community model kicks off with 10km radius but have seen some set at 20, 25…40km…more? ! Region vs large city vs town…makes comparisons ‘variable’…but a great success none the less 
I don’t want to make an argument out of this, just mentioned it as it is a funny one – the problem here is not really the fact it is regional, but the area shape limited to a circle: to be able to cover Wallonia with a circle you actually cover whole Belgium, parts of France, The Netherlands and Germany. The Walloon region has in reality probably less than 10 gateways…
circle is an issue for sure and also gives false impression of potential coverage - many sites are located on sides of hills or on valley edges and therefore have limited range ‘behind’ and perhaps ~ semicircle or large arc in front at best!
I’m looking at a large river valley deployment leading to a new community proposal where going up/down stream from center is maybe 20km each way but only 5-10km ‘wide’ for the proposed region/community - so an oval/elliptical option would be good…
I ‘spoke’ to @rish about alternate shapes earlier in the year and whilst a nice to have and a discussion for the future none circular options still look to be some way away…perhaps when new V3 out and back-end changes?
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The overview is not reliable. The map shows 18 active and 4 inactive gateways for Friesland (province), not the listed 66.
Given the billions of IOT devices coming online replacing all those batteries is going to be a serious problem. This company called Face just came out with a new technology called Evercell which can passively generate electricity in any environment above absolute zero indefinitely.
In healthcare, a Find and Track system is an IoT solution used to provide immediate or real-time tracking
and management of medical equipment, staff, and patients within all types of patient care environments.
Arduino + Linux? = Next gen Yun Rev 2 incoming soon!
https://store.arduino.cc/arduino-yun-rev-2
RS taking back orders ready for 12/7 ship @£52 inc vat (£43 ex)
RS Stock No.: 174-4971 Mfr. Part No.: ABX00020 Brand: Arduino
https://uk.rs-online.com/web/p/processor-microcontroller-development-kits/1744971/
Summary here: https://www.electronicsweekly.com/blogs/gadget-master/arduino/devboard-watch-say-hello-arduino-yun-rev-2-2018-07/
sigfox… but still a good read on howto calibrate the sensors
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Deep Learning at the Edge on an Arm Cortex-Powered Camera Board
Dual Axis Solar Tracker Panel with Auto and Manual Mode
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https://www.helium.com/technology
We introduce a new open-source Low Power Wide Area Network (LPWAN) protocol called WHIP
WHIP is a highly secure, long range, low power, bi-directional wireless network protocol that is compatible with a wide range of existing radio transceivers operating in the sub-GHz unlicensed frequency spectrum.
How AI and Tech Personal Assistants Will Make Your Life Easier