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Discussion: This all sounds very impres...

in: Rosstopher; Rosstopher > 2016-04-25

Apr 25, 2016 10:42 PM # 
This all sounds very impressive--well done! I had no idea Linne' was the biggest club in Sweden (nor would I have known which club to guess at.)
Apr 26, 2016 12:00 AM # 
Radio controls hooked up to cell phones? How does that work? I'm pretty familiar with Valerie's setup (line of sight radio controls), but it sounds like the cell / cloud idea would solve some of our more challenging setups that don't cooperate well without a long string of repeaters.

I'm sure Valerie needs new toys to play with...
Apr 26, 2016 5:52 AM # 
I think, having talked to Ed about it a bit, that the GPRS system is not really an option available for orienteering clubs in the US. Peter Löfås has designed the ones that we use and if Henrik were to read this and want to write in more, he could probably explain it all better ;)
Apr 26, 2016 7:21 AM # 
I guess the system with mobile phones would be usable in the US as well. The system is basically a serial/usb to bluetooth converter that you hook up to a mobile device. Having the SI-units in autosend will transmit every punch via the interface to the device where there is in an app listening for incoming transmissions. When a punch is recieved it is uploaded to an online database. The entries from the database is then downloaded by a computer at the competition center and then pushed into OLA/MeOS for example using the radio control interface.

For less lag I think Peter is mostly using a system based on repeaters, but then the range is decreased to some 2-3km between each repeater.

And it seems that it will be new challenges now with the SIAir since then the autosend function is no more..
Apr 26, 2016 7:22 AM # 
by the way, great job putting on the meeting!
Apr 26, 2016 9:06 AM # 
The biggest problem in the US would probably be phone signal in your competition areas? Otherwise should work fine depending on what sim card you put in the device.
There is already kit avaialable to deal with SIAir punches from GPProjects in the UK (if the control is programmed to tell the SIAir to broadcast the last n punches, they have a device that reads this and pushes to the database, used at WOC last year)
Apr 26, 2016 10:54 AM # 
SIAir: Now you use the SRR modules to get punch data from radio controls, and instead of coming from the control, it comes from the SIAC. You can have it either send back just the most recent punch, or all of the data from the stick, so a radio control can get you a complete set of splits part way through the course. The hardware and firmware is typical SI (quirky), but is working well for me, and I'm using it with the BSM8-SRR boxes for traditional punching too. It gets rid of any wires leading from the control competitors are punching, and lets me put my hardware and backhaul radio off to the side wherever it is convenient.

GPRS: Coverage sucks in a lot of the areas we orienteer in. Same reason why we can't do GPS trackers.
Apr 26, 2016 11:41 AM # 
That kind of organisation deserves an O-Ringen. Well done.
Apr 26, 2016 4:50 PM # 
thanks for the details, all - will tuck that in the back of our minds as we contemplate interesting areas to retire to (and possibly map).

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