Seppo
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  • Brisbane, QLD
  • Australia
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Seppo's Groups

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 Dan Ho Jan 15. 720 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

Dan Ho replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"If you were really going to go the home-made USB cable route, CAT-5e would be a good choice.  Here's some rated to -40C. Not sure about price but probably fairly…"
Jan 15
Dan Ho replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Well, USB needs one twisted pair for each direction.  If you can't find an off-the-shelf outdoor type, maybe you could buy the indoor type and just use the electronics by replacing the cable with two silicone twisted pairs.  I do see…"
Jan 15
Vinh PHAM GIA replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Thomas, I think you may want to look at a TTL-RS485 converter. RS-485 is good industrial standard for long range wired communications, longer range and better immunity to noise than USB at long range. Silicone is not very good neither at very cold…"
Jan 15
Thomas Stanley-Jones replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Thanks for the suggestions.  I think I'll try to find someone who can make an active USB extension out of silicone wire or something so it's not going to break in sub zero temperatures.  I suppose this should also have some kind…"
Jan 15
Dan Ho replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hi Thomas, I'd think you would want to mount the modem on top of the pole and run data & power over the 60 feet (using a $30 active USB extension) rather than the coax because losses can be quite high.  Try this calculator -…"
Jan 15
Thomas Stanley-Jones replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"I'm looking to put the antennas for my 900+ (for uav basestation) and 900x (for remote instrument control) up on a pole (up to 60' if possible).  Can I use SMA extensions to connect the RFD radios on the ground to their dipole…"
Jan 15
Boas61 replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hi I am also curious about powering the RFD900 externally or from the flight controller. It would be simpler to power the radio from the flight controller, so this is my preferred solution. Is it not recommended to do so because you risk to damage…"
Jan 9
Nicholas Witham replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Can the rfd900+ take an sbus signal and send it to an rfd900u, which will then output that same sbus signal? "
Jan 2
Thomas Stanley-Jones replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"When you say checked the baud rate to be 57600, did you check the settings on the individual radios? Use RFD’s tool for that, downloadable from their website. I remember I needed to use version 1.5 for some reason later ones didn’t wok…"
Dec 15, 2017
Adam Kelly replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Just to add to above, I also tried on a windows 8.1 machine I had. Still nothing."
Dec 15, 2017
Adam Kelly replied to Seppo's discussion RFD900, RFD900+ - New long range radio modem
"Hi All - having a bit of an issue with my RFD900+ I hope someone can help me out? I'm getting solid green LED with the radio plugged in via usb and the aircraft powered up, so that side is working, but I cannot connect in mission planner. I…"
Dec 14, 2017

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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