Thanks..helpful. This radio purchase is my biggest stummbling block. Glad to hear the 72mhz radios work Ok. Also, I have the LS2003 on the carrier board, but the connector is not the same. I soldered a header to the board for use with a breadboard. Is there a schematic available that shows the connection between the GPS and the Ardupilot? Thanks...Win
Just a point of clarification. A proportional control on the Tx is NOT required. The FMA can works with a simple toggle. But you have to set its gains on the ground with a little dial, which is a hassle, so the proportional is better (because you can tweak it in the air).
2) There is no failsafe, for reasons that we've discussed here at length. Modern receivers do not generate a standard signal-loss response that can be detected. Most just drop the throttle, which is indistinguishable from pilot behavior. I don't think anyone has solved this problem.
3) We actually use 72Mhz radios on a few of our ArduPilot-powered planes. No problems, and it lets you use 2.4Ghz other equipment like video downlink or telemetry.
4) The PA-2 is not recommended, for the reasons Sgt Ric stated. It can work, but the FMA works better.
5) Yes, we've used the LS2003X series. All you need is the 3.3v daughterboard and to change the serial speed in the code to whatever you're using on the module.
@ Win Heagy,
I bought the 6EX 2.4gHz model, but the 6EXA is the 72mHz FM model.
I had assumed that the 2.4 version would have a proportional dial as well... I guess I was wrong.
@Chris
Hello, I have been working on the code few nights and i will propose few improvements next few days.
I would like to know if the Boards available for sail now on SparkFun website (16 ones) have the built-in voltage regulator ?
thanks
Ric,
Thanks...it is the RTF. The radio is the 6EXA. The manual mentions a flap control dial...I was assuming this was one of the AUX controls and was proportional? Of course I'd lose use of the flaps. If I could get this plane without the radio, that would be ideal, but I can't seem to find it that way unless you go with the a glow model. I suppose I could buy the replacement parts to build one without the radio or maybe adapt the glow model. Thanks for you input. I haven't bought a radio in over 12 years, so there are lots of new things I'm trying to learn about.
Incidentally, I find the Futaba 6EX 2.4gHzis not only not appropriate to my intended UAV use, but I previously found out that it was the only radio NOT compatible with my PCTx adapter from Endurance-RC, which I had intended to use on my FPV planes along with my laptop and joystick, allowing me to use the tophat on the joystick for my pan and tilt camera while flying comfortably.by video.
(I only have two hands for crying out loud)
I have a Futuba 6ex and unfortunately it does NOT have proportional aux control, which is required to tune the FMA in flight.
(I believe the NexStar comes with the 6EX in one of the packages... is it the RTF?)
Chris haas previously explained the diff between the Hobbico PA system and the FMA.
The FMA thermopiles are sensitive to the infrared part of the spectrum, whereas the the PA-2 uses visible light, so is not appropriate in low light or cloudy situations.
A few miscellaneous questions from someone just starting...
1) Can anyone make recommendations (beyond the Futaba 7C) for a 6-8 channel 2.4 Ghz radio that has a proportional aux control?
2) What is the requirement for fail safe capability on the radio? Is it needed in case the plane gets out of range, or is that handled by the Ardupilot?
3) What are your experiences with 72Mhz radios? Are there any interference issues from the Ardupilot? I like the Hobbico NexStar combo. The plane seems ideal for a UAV, but I'd prefer a 2.6 Ghz radio. Has anyone tried the NexStar with the included radio? Any issues? It appears to have a proportional control on aux 6.
4) There is a PA-2 included with the NexStar. Is that unit sufficient to replace the FMA Copilot? Any experience with it?
5) I've seen a few posts discussing the use of the LS20031 for the GPS. I have one of these and the sensitivity and accuracy are excellent. Has anyone actually interfaced it to the Ardupilot? Does anything special need to be done? How about code changes?
Comments
Thanks..helpful. This radio purchase is my biggest stummbling block. Glad to hear the 72mhz radios work Ok. Also, I have the LS2003 on the carrier board, but the connector is not the same. I soldered a header to the board for use with a breadboard. Is there a schematic available that shows the connection between the GPS and the Ardupilot? Thanks...Win
and show me, this error message
25: error: ServoTimer1.h: No such file or directory In function 'void setup()':
In function 'void altitudeHold()':
In function 'void Steer()':
i buy the board in sparkfun . Help!!!!
2) There is no failsafe, for reasons that we've discussed here at length. Modern receivers do not generate a standard signal-loss response that can be detected. Most just drop the throttle, which is indistinguishable from pilot behavior. I don't think anyone has solved this problem.
3) We actually use 72Mhz radios on a few of our ArduPilot-powered planes. No problems, and it lets you use 2.4Ghz other equipment like video downlink or telemetry.
4) The PA-2 is not recommended, for the reasons Sgt Ric stated. It can work, but the FMA works better.
5) Yes, we've used the LS2003X series. All you need is the 3.3v daughterboard and to change the serial speed in the code to whatever you're using on the module.
I bought the 6EX 2.4gHz model, but the 6EXA is the 72mHz FM model.
I had assumed that the 2.4 version would have a proportional dial as well... I guess I was wrong.
Hello, I have been working on the code few nights and i will propose few improvements next few days.
I would like to know if the Boards available for sail now on SparkFun website (16 ones) have the built-in voltage regulator ?
thanks
Thanks...it is the RTF. The radio is the 6EXA. The manual mentions a flap control dial...I was assuming this was one of the AUX controls and was proportional? Of course I'd lose use of the flaps. If I could get this plane without the radio, that would be ideal, but I can't seem to find it that way unless you go with the a glow model. I suppose I could buy the replacement parts to build one without the radio or maybe adapt the glow model. Thanks for you input. I haven't bought a radio in over 12 years, so there are lots of new things I'm trying to learn about.
(I only have two hands for crying out loud)
I have a Futuba 6ex and unfortunately it does NOT have proportional aux control, which is required to tune the FMA in flight.
(I believe the NexStar comes with the 6EX in one of the packages... is it the RTF?)
Chris haas previously explained the diff between the Hobbico PA system and the FMA.
The FMA thermopiles are sensitive to the infrared part of the spectrum, whereas the the PA-2 uses visible light, so is not appropriate in low light or cloudy situations.
1) Can anyone make recommendations (beyond the Futaba 7C) for a 6-8 channel 2.4 Ghz radio that has a proportional aux control?
2) What is the requirement for fail safe capability on the radio? Is it needed in case the plane gets out of range, or is that handled by the Ardupilot?
3) What are your experiences with 72Mhz radios? Are there any interference issues from the Ardupilot? I like the Hobbico NexStar combo. The plane seems ideal for a UAV, but I'd prefer a 2.6 Ghz radio. Has anyone tried the NexStar with the included radio? Any issues? It appears to have a proportional control on aux 6.
4) There is a PA-2 included with the NexStar. Is that unit sufficient to replace the FMA Copilot? Any experience with it?
5) I've seen a few posts discussing the use of the LS20031 for the GPS. I have one of these and the sensitivity and accuracy are excellent. Has anyone actually interfaced it to the Ardupilot? Does anything special need to be done? How about code changes?
Thanks,
Win
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