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  • Brisbane, QLD
  • Australia
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Seppo's Discussions

Drones to become target practise for Australian farmers !

Started this discussion. Last reply by Greg Fletcher Mar 31, 2013. 1 Reply

Ran across an interesting thread discussing the proposed use of UAVs for cattle monitoring.I imagine it'd sure get expensive quick !    …Continue

RFD900, RFD900+ - New long range radio modem

Started this discussion. Last reply by saeed alamri Jul 27. 288 Replies

Hi All,I would like to introduce you to a new radio modem that we developed for very long range datalinks!http://rfdesign.com.au/RFD900.phpSome of the…Continue

No GPS Altitude update on arduplane 2.27a / apmplanner 1.1.13

Started this discussion. Last reply by Seppo Jan 2, 2012. 2 Replies

Ran into some strangeness with the GPS altitude on the latest firmware.On initial bootup, GPS gets a 3D fix, and the altitude is correct on apmplanner.Taking off and flying, the altitude remains…Continue

Throttle weirdness on arduplane 2.26/ apmplanner 1.1.2 vs. normal on 2.24/1.0.88

Started this discussion. Last reply by Don Brooks Dec 9, 2011. 3 Replies

Gday,Things are fine with the old combination of arduplane 2.24/ APM planner 1.0.88With arduplane 2.26/ apmplanner 1.1.1 or .2, I can't get throttle settings to work.Have gone through…Continue

 

Seppo's Page

Latest Activity

saeed alamri replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"I have one that i am using with apm2.6 and i have a broblom conecting to mission planer latest version . Both units have a solid green light but every time its give me no hart pep and i dont know what to do."
Jul 27
Dusan replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Did anybody tried mash firmware ? There was some talk it will be supported with new release, Is it stable and reliable ? Idea is to have one on ground station for monitoring and control and have other one hooked up to phone or GPS/arduino as…"
Jul 27
Ivan R replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"would definitely use a yagi on GC....."
Jul 15
James Churchill replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"(Seppo has been insanely busy for as long as I've known him, I don't think it's fair to expect him to personally answer questions on basic radio theory, which is what you're asking.) You need to calculate a link budget;…"
Jul 15
Karthik replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hello Seppo, I am looking for 20 to 25 km range from RFD900 and my airframe can accommodate dipoles. I need suggestions for the Antenna setup on my ground side and air side. (Note: Modem used only for telemetry and occasional command) 1. Do i need a…"
Jul 14
Karthik replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hello all, I am looking to use RFD900 on my medium fixed wing platform (15 kgs) which is tested in the field with successful short range missions. Now i want to use the long range modem to achieve a range of about 20 kms (LOS)...can u suggest…"
Jul 13
Karthik replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hello Henri, I am looking to use RFD900 on my medium fixed wing platform which is tested in the field with successful short range missions. Now i want to use the long range modem to achieve a range of about 20 kms (LOS)...can u suggest whether the…"
Jul 13
jean-luc replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hi Seppo, I receive my RFD868+ bundle. But when i'm connecting the modem with RFDtools 1.5, i can't see and change the 868Mhz frequency, i have only the choice between the 902/928Mhz band. Is there an hardware frequency band error with…"
Jul 6

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Thomas J Coyle III replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"@Ivan R, Maybe the final power amp in the transmitter section is failing or the sensitivity of the receiver section has fallen off drastically. Since you have reset all parameters to their defaults, it is probably not firmware/programming…"
Jun 10
Raph replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"HI Ivan, Many things can cause this, usually interference from other devices on your copter. Check for any new equipment you may have installed (BEC's, VTX's etc), and start unplugging them until you find a cause. Good luck!"
Jun 10
Ivan R replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"all sudden my RFD900 range has been drastrically reduced to a few hundred meters and I cant figure out why? I tried resetting all parameters to default, reflashing the firmware, checking all connection and no luck....what would be some reasons for…"
Jun 10
arga firmansyah replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Somehow i'm not really that will help, but will try that this weekend. I have try to use 3 different computer and came out the same result. I have 2 hexa and both of them bahave the same as well."
May 21
Joe Street replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"you could try putting some Ferrite beads on the communication leads as close as possible to the ends.  It could be that RF that strong is coupling into the com lines and causing the problem.  If you can shield the boards it might also help…"
May 21
arga firmansyah replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"I have RFD900 both on the hexa and the ground control. TX power from the default setup is 20dbm. I have tried to change the tx power to 30 dbm with success but unfortunately it can't connect on mission planner if the tx power is 30 dbm. I have…"
May 21
Seppo commented on IKE's blog post Multiple tethered quadrotors performing high-g, high-speed formation maneuvers
"wow, that is impressive...  Nice work !"
May 6
Ivan R replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"wow, i just installed mine RFD900 set on my 650 quad and these things are amazing...well over 2km with lot of tree obstructions on the way...am very pleased.."
Apr 25

Profile Information

About Me:
Engineer, Pilot, General Geek and interested in anything electronics, flying and any random cool thing of the moment
Please tell us a bit about your UAV interest
Variable pitch quadcopters, UAVs for the outback challenge
Hometown:
Brisbane

Comment Wall (1 comment)

At 12:44am on December 29, 2013, mParets said…

Hi. I'm struggling in an attempt to get a pair of RDF900 modems talking to each other. When installed on a Raspberry Pi via USB and seems to work find (responds to +++ to enter AT command mode). When installed on my Windows 8 laptop I get nothing. The status light flashes, I get a red flash when I transmit a key press (testing with Pythons Miniterm). I even down graded Usb driver to the .28 version as suggestion in forum post. No luck on any front get a response on the pc, and no suggestion that the two modems are connecting.

Is there a fix for any known issues with Windows 8?

Is there is tutorial/primmer/testing document? Something that I could follow to make sure I am setting everything up right?

Any suggestions would help.

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