Sigfox based wireless water leak sensor

Roughly a year ago I have experienced the fatal error on my house plumbing system which turned my house into swimming pool. All ground floor was covered with 10cm of water and the total volume of water leaked from a broken pipe was more than 7 m3.  At that time I  hadn't installed any water leak alarm in my house what was the epic mistake. Currently, I have installed some cheap solution from eBay but it is rubbish. So I got an idea to build my own nice one based on Sigfox network.   ...
More

Super duper LTE antenna

I have found nice LTE antenna on eBay with amazing 35dB gain. I know that figure is total nonsense but I expected that antenna will have some serious design and just description is bit improved. But I have been totally wrong! Take a look. I would like to do some measurement in future but I am not sure if I want to waste my time on this. Hmmm....  
More

Co-Assist: Elderly people tracker watch

Develop some industrial Sigfox device is not so big deal in comparison to this product.  I believe that development was really nightmare. Also I like design or more precisely I think elder people will like the design. I am looking forward to test it. Well done! http://blog.sigfox.com/the-first-wearable-with-sigfox/
More

Breadboard friendly Sigfox development board

Custom Sigfox development board for TD1208 and TD1208R  with some improvements: UART header is same as on original (for FTDI cable) breadboard friendly! RESET button! smaller footprint easy soldering of wires jumper for current measurement is shorted out on PCB pin labels note: electrical design and components are identical with original For initial testing is original Telecom Design evaluation kit is fine but when you want embed Sigfox module into your own early pro...
More

Document about device Sigfox antenna design

Designing Sigfox antenna for your device? I just found very nice document about antenna design for Sigfox (and other IoT ;-) devices. I know how complicated is find right balance between design of device itself and antenna inside. This is valid especially for B2C devices where antenna should be in best case invisible. So I thing that document is very helpful. http://www.sigfox.com/en/resources/white-paper/antenna-design-essentials-for-sigfox-ready-tm-devices and here is a webinar http://www.s...
More

Swimming pool wireless temperature sensor

I'm not really bathing type of person... But you know I have wife and daughter so small swimming pool in the garden is almost mandatory. OK when am not frequent occupant of that blue thing so I have to be at least a maintenance guy. Standard pool set offers just limited room for innovation so I decided to do something cool to be aware of unacceptable temperature of water inside and because I like cool stuff, cool beer bud definitely not cool water. You can admit that there are hundreds of swimmi...
More