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hmmpic
Joined: 09 Mar 2010 Posts: 314 Location: Denmark
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SigFox IOT, anyone? |
Posted: Fri Oct 13, 2017 12:34 pm |
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Anyone used Sigfox?
I looking for information about Sigfox.
I found TI, CC1120 and Microchip, ATA8520E. Now i hope for other there have used SigFox.
Sigfox i think can be real smart IOT, it is cheap hardware compared to what i have used before (SIM module), and the license is cheap too.
I know it is only for very limited byte posting, but for my need it will work fine.
Any one? |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19540
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Posted: Fri Oct 13, 2017 1:59 pm |
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Max 140 8 byte messages/day. 100bps.
In the UK at least, real coverage is very poor. They claim a link reliability that is far above what it actually had....
It needs a TXCO to even get this (it is very affected by timing errors).
No acknowledgement, so you have to send a lot of times, and preferably with data recovery options. So 'real' data rates are tiny. You can send effectively a 're-transmit' request, but only at very low intervals (4 messages/day).
If you only want to send a very few bytes a day, then it may be a usable option.
If there is a LoRa LPWAN anywhere near you lose all connectivity... |
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temtronic
Joined: 01 Jul 2010 Posts: 9243 Location: Greensville,Ontario
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Posted: Fri Oct 13, 2017 6:23 pm |
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what's the real application, distances and data requirements ?
simple, cheap HC-12 modems are good for about a KM, 2 +PIC can a 'repeater' with NO fees !
I can go about 15 miles on direct copper.
there are probably other methods/ equipment that you could use.
maybe just simple SMS ?
Jay |
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