Problem Programming 79XX servos with HPF-10

[tommy321]

Hi all,

Last night I ran into a problem with my servo programmer and my new Hitec servos.

I have some new HS-7966s for my Funtana 90, and went to program them last night. (Need to reverse one of the elevator servos and setup the end points.)

All went normal at first. I adjusted the end points a couple of times, and it seemed to take.

At one point I got out of whack and wanted to go back to defaults.

So I ran the ">Program Reset" function on the servo. It responded saying that the reset was successful.

However, now when I enter the "Program EPAneuFS" menu I get the following:
-Programmer ask me to center the knob. (correct).
-Once the knob centered the servo starts marching off in one direction (without me moving the knob).
-Meanwhile, the display on the HFP-10 starts counting up from -400 (again, I'm not touching the knob).
-When the servo hits its stop, it keeps buzzing, and the HFP-10 display stops incrementing (around +6 or so).
-Nothing I now do with the HFP-10 will move the servo. I can only set the left end point and neutral point.
-If I set the End Points now, I end up with a servo that only moves <1 degree right next to its end stop.
-Luckily, doing another Program Reset seems to kick the servo back into normal factory operation, but I still can't adjust the End Points Normally.

Has anyone else seen this? Could it be an issue between the new servos and the old programmer?

My equipment:
-HS-7966
-HFP-10 (Software Version 1.03 - yeah, I know it's pretty old).
-Battery in the HFP was freshly charged.

Any thoughts are appreciated.

Thanks,
Tom

[wylieruneyjr]

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[Zeeb]

Well I went ahead and got the HFP-20 programmer so I can't go test the HFP-10, but when I experienced something similar with it and several 5625 servos, I called Hitec and they had me send it in for service. They replaced it under warranty....

Try some other servos and if you still have the difficulty, I'd call Hitec about it as you may have a bad programmer. The HFP-10 is supposed to be able to do what you want with the 79XX series servos.

[rcheliman]

	Quote: Originally Posted by Zeeb
	Well I went ahead and got the HFP-20 programmer so I can't go test the HFP-10, but when I experienced something similar with it and several 5625 servos, I called Hitec and they had me send it in for service. They replaced it under warranty.... Try some other servos and if you still have the difficulty, I'd call Hitec about it as you may have a bad programmer. The HFP-10 is supposed to be able to do what you want with the 79XX series servos.

I thought the HFP-10 only programmed the 59XX series servos, I think you have to have the new HFP-20 to do the 79XX series servos.

[tommy321]

	Quote: Originally Posted by rcheliman
	I thought the HFP-10 only programmed the 59XX series servos, I think you have to have the new HFP-20 to do the 79XX series servos.

See post 94 in the New Hitec Digital Thread:
http://www.flyinggiants.com/forums/f...tml#post616409

Mike Mayberry says:

	Quote:
	Note: You only need the HFP-20 if you want to set the overload protection or extend the travel beyond 120 degrees which will defeat the advantage of the high resolution setting anyway. The HFP-10 can still be used to match ganged 79XX series servos. Mike.

[Pistolera]

I used my HPF-10 to program 4 HS7955 servos and had no problems. Sounds like your programmer has a bug.

Earle

[tommy321]

	Quote: Originally Posted by Pistolera
	I used my HPF-10 to program 4 HS7955 servos and had no problems. Sounds like your programmer has a bug. Earle

I guess it's possible. I'm just doubtful because this HFP-10 is shared by a couple members at our club and has programmed many servos. I think this might be it's first exposure to a 79XX servo.

If there's a problem with it, I'm glad I'm finding it out sooner. I'll need to program the 7955s that are on order for my Dalton before spring hits.

Tom

[Zeeb]

Well I was suggesting you try your other 7966's as when mine went bad, it only exhibited the problem with the 5625 servos and not others i.e. it worked on the 5955's just fine.

Oh, and ver. 1.03? That programmer doesn't owe you anything and I don't think Hitec is going to warranty anything..... I'm not sure exactly how they handle the programmers since mine had a note "uneconomical to repair" when they sent me a new one. If they can't fix that HFP-10, I think they offer a discount on a new HFP-20.

Again, try all your servos and if it doesn't work on any of 'em I'm betting on a bad programmer based on what mine did. The other interesting thing about when mine went bad, I tried it on three different brand new servos and each of the three behaved a bit differently when trying to program them, all the way from flat didn't play to the behavior you describe of things starting out okay and then it quits responding, reset difficulties then no access to the different settings and so on.

[tommy321]

I just tested it out on the other elevator servo (another 7966)

Same thing.
The programming seemed to work perfectly until I did the program reset.
After that point, while the servo still seems to work normally, I can no longer program the endpoints or neutral point.

Seems like the old programmer plays nice until you try to reset the servo.

I think I'll move the elevators onto separate channels and do my mixing in the radio until the HPP-21 USB programmer comes available.

Tom

[wylieruneyjr]

Don,t use the reset to factory settings, just overwrite the end points and centers. As many times as need. Hope that helps.

[tommy321]

	Quote: Originally Posted by wylieruneyjr
	Don,t use the reset to factory settings, just overwrite the end points and centers. As many times as need. Hope that helps.

Doctor, Doctor... it hurts when I hold my hand like this. :aa:

So don't hold your hand like that.

[wylieruneyjr]

Just trying to help. Offended ---Whats with the ****** wimpy hand crap?

[yakman789]

You can return the old programmer to Hitec and they will swap it out for the new one for $70.00

[tommy321]

	Quote: Originally Posted by wylieruneyjr
	Just trying to help. Offended

My bad... sorry dude. I really didn't mean any offense. Your advice just reminded me about an old joke about a doctor and a patient with a broken arm. Hence the emoticon.

Thanks for the help. Sorry if I offended.

Tom

[Hinckley Bill]

	Quote: Originally Posted by yakman789
	You can return the old programmer to Hitec and they will swap it out for the new one for $70.00

Is this exchange something that the folks at Hitec just started or has it been on-going since the intro of the HFP-20?