DJI Naza-H GPS

[gpbill]

Originally Posted by goodhunting

Question about the GPS module. How long is the connection cable. I have a Trex 600 EFL PRO with Naza H gyro waiting to be build... sometimes late this summer. I would like to mount the GPS module, BUT with the Trex design, I can only mount it in the front of the helicopter. Is there an extension cable available or is the generic cable long enough to fit on the boom, within the optimal distance?

gh

I have one installed on a 600 ESP and with the GPS unit mounted about 2 1/4" forward of the fin I had just enough wire to connect to the controller. My controller is on the bottom frame plate near the rear. Unless the GPS is well forward on your boom I think you may have a tough time reaching the front.
Since mine is installed, the best measurement I could get for you is about 17'' of cord length including the plug.

Edit:
Just digging through my parts box I found an extension cable that I'm quite sure is for the GPS and it's 22" long so you should be in good shape.

[Valkman]

Yes that cable is for the GPS. I have it on my 700. I'm still awaiting maidon with weather.

[goodhunting]

Great thanks for the info.
Gh

[lrrace]

Originally Posted by Tahoe Ed

Who wants to pull the Gear channel out of your receiver for a test? That is the easiest way to see if it is possible to run with 6 channels.

Ed, I you and Straightup seem to have 550`s with Wookong H and Naza H. I have a 550 with a Wookog H and a 600 Pro with a recently installed Naza H. I just got into heli`s in the last year (newbe). My 550 with Wookong has a tail wag that I am fighting. The tail has a slow wag that we can`t seem to get out. My Tx gyro rate is set at 30% now I have tried turning it up and got a fast twitch, so I reduced it to 30% which helped but I still have a nasty slow wag. Any help from you both would be deeply apppreciated, I still have a lot to learn so please make it simple with details if possible.

Thanks

[NexxuSix]

Originally Posted by gpbill

I have one installed on a 600 ESP and with the GPS unit mounted about 2 1/4" forward of the fin I had just enough wire to connect to the controller. My controller is on the bottom frame plate near the rear. Unless the GPS is well forward on your boom I think you may have a tough time reaching the front.
Since mine is installed, the best measurement I could get for you is about 17'' of cord length including the plug.

Edit:
Just digging through my parts box I found an extension cable that I'm quite sure is for the GPS and it's 22" long so you should be in good shape.

Just a word of advice from a practical experience: Make sure you keep the GPS puck out of the boom strike area. I have posted instructions on how to build a GPS protector in this forum. Have a look at https://www.helifreak.com/showthread.php?t=484260 for ideas and options.

[pert]

ITs good news but Im going to get dx7 any way found 1 on HF today I. I need it anways I want to put a skookum gps setup on other scale heli ..by the way will the naza h gps work on gaui 2x.? will compass be to close to ? sorry for asking silly ? but I am a nob nob only have flone nano & mcpx I know gaui 2x is small. but its a lot bigger to me and I dont it falling around my ears:

[R_Lefebvre]

Originally Posted by lrrace

Ed, I you and Straightup seem to have 550`s with Wookong H and Naza H. I have a 550 with a Wookog H and a 600 Pro with a recently installed Naza H. I just got into heli`s in the last year (newbe). My 550 with Wookong has a tail wag that I am fighting. The tail has a slow wag that we can`t seem to get out. My Tx gyro rate is set at 30% now I have tried turning it up and got a fast twitch, so I reduced it to 30% which helped but I still have a nasty slow wag. Any help from you both would be deeply apppreciated, I still have a lot to learn so please make it simple with details if possible.

Thanks

Does the Wookong have a feed-forward setting?

[Tahoe Ed]

Originally Posted by lrrace

Ed, I you and Straightup seem to have 550`s with Wookong H and Naza H. I have a 550 with a Wookog H and a 600 Pro with a recently installed Naza H. I just got into heli`s in the last year (newbe). My 550 with Wookong has a tail wag that I am fighting. The tail has a slow wag that we can`t seem to get out. My Tx gyro rate is set at 30% now I have tried turning it up and got a fast twitch, so I reduced it to 30% which helped but I still have a nasty slow wag. Any help from you both would be deeply apppreciated, I still have a lot to learn so please make it simple with details if possible.

Thanks

When I had the twitch on mine with the Naza H, DJI wanted me to make sure that all the mechanicals were correct, no binding, smooth movement of the tail linkages. They also had me check the centering of the tail blades. I did switch from a SS rod to a CF rod that doesn't flex as much. My tail gain right now is set at 40-45 in Assistant which is 50-57 in my Tx. It has helped me. I am going to do one more flight with it on the 550 and then move the Naza H to my 500 and put the WKH back on my 550. My suggestion is to forget what is showing in the Tx and concentrate on what the Assistant is telling you. gpbill has one on his 600 he may be able to add more to help you.

[lrrace]

Originally Posted by Tahoe Ed

When I had the twitch on mine with the Naza H, DJI wanted me to make sure that all the mechanicals were correct, no binding, smooth movement of the tail linkages. They also had me check the centering of the tail blades. I did switch from a SS rod to a CF rod that doesn't flex as much. My tail gain right now is set at 40-45 in Assistant which is 50-57 in my Tx. It has helped me. I am going to do one more flight with it on the 550 and then move the Naza H to my 500 and put the WKH back on my 550. My suggestion is to forget what is showing in the Tx and concentrate on what the Assistant is telling you. gpbill has one on his 600 he may be able to add more to help you.

I have the carbon rod also and can`t find any binding, tail is centered and bearings seem smooth. I have an actual gain in the assistant of 20% in HH and 26% in rate. I do have the Align plastic saber blades on now, I might try a set of carbon, but I don`t think that`s it. I think I will go throught the tail and re-check it. What did you do to get rid of the wag on you 550 with the Naza H? It sounds just about the same thing I am getting with the Wookong. I may contact you on RC groups my posts seem to be taking along time to post here.

[Valkman]

Today I had my first "hop" with my H on my stretched 600. It was a hop because as soon as it got of the skids it vibrated badly and I landed. It was late in the evening so I called it a night.
I think it was too sensitve on the cyclics before take off but it of course it is hard to tell as it had not actualy taken off. As far as I remember there is a setting for calming it down from 3d to say sport so I will try that tomorrow weather permitting. I just want it for AP so I want it calm as possible. I might turn down the gain on cyclics as well. The tail seemed ok.

[Tahoe Ed]

Try over here:

http://www.rcgroups.com/forums/showt...774265&page=14

[clio]

Hi, i would like my throttle hold to work when in atti or gps mode. Is it possible to pull the throttle wire out of the Naza and directly into my receiver and so enable throttle hold or am i missing something there?

best regards,

Hans

[Tahoe Ed]

No you cannot do that. The Naza needs throttle control to be able to stabilize the heli. If you want TH then switch into manual and go. Not sure why you want TH in ATTI and GPS when you can switch modes so easily.

[Valkman]

Guys I had another guick test flight today and it was unsuccessful. At least no damage was done. I won't be able to look at it for a couple of days at least so I'm hoping someone can point out something I may have overlooked. I have done all the reading on all the posts so maybe I have information overload or something and need to get away from it.
Before putting the RJX head on and the Naza the heli flew perfectly with the FB so it is not the heli. Just as it take off it vibrates very bad and I have to land it. I went through all the settings etc and all seems ok. The swash moves as it should when I tilt the heli and besides I don't think it would get off the ground if anything was reversed there. I did reduce the FBL gains to 80% and the rate to 180.
Thanks guys

[ame]http://www.youtube.com/watch?v=nz4_fRR8xvw[/ame]

PS the field may look like a bomb site because it would used for halloween fire. I had not got time to go to my usual spots!

Edit: this is not my first FBL setup. When it was a 600 ( it is a stretched 700 now) I had the BlackWidow gyro on it but I ended up putting that gyro on my 450 ages ago and put back on the FB head.

[clio]

@Tahoe Ed Why does it need throttle input to keep the heli level? My helicommand does the same thing without throttle input. I want to use throttle hold just for safety.

Best regards,
Hans

[Tahoe Ed]

This unit has a barometric sensor. That requires both throttle and pitch to control attitude.

[zeeflyboy]

It could quite happily control altitude just by varying pitch... I guess the guys at DJI decided on it for good reason though.

I assume for best performance it needs to take command of the throttle, otherwise it's difficult to imagine why they did it.

You can also see a potential issue for example if it didn't lock throttle and you were running a curve rather than flat line - when you pull the stick down to descend the headspeed may decay too far since the stick movement is more than usual.

If you're nervous about it once you've engaged Atti/GPS Atti, flick throttle hold. Nothing will happen but now the instant you flick out of Atti/GPS Atti and back into manual the throttle will cut.

The key would be to not forget that when changing back into manual during normal flight lol.

[R_Lefebvre]

Originally Posted by Tahoe Ed

This unit has a barometric sensor. That requires both throttle and pitch to control attitude.

No, that doesn't have anything to do with it. The Naza-H isn't controlling the rotor speed in any way (no built in governor), at least not that I've seen. And altitude should be controlled by collective pitch, not rotor speed.

Having the FC aware of the state of the motor is beneficial for a number of reasons. Mostly higher level functions which it doesn't currently do anyway. Maybe they will in the future.

[Tahoe Ed]

Originally Posted by R_Lefebvre

No, that doesn't have anything to do with it. The Naza-H isn't controlling the rotor speed in any way (no built in governor), at least not that I've seen. And altitude should be controlled by collective pitch, not rotor speed.

Having the FC aware of the state of the motor is beneficial for a number of reasons. Mostly higher level functions which it doesn't currently do anyway. Maybe they will in the future.

Rob you have al lot more experience than I do with FC controls. I am making some suppositions on what DJI is trying to do. They do not always state that. The ATTI controls and GPS controls center the throttle at 50% for hover. That may pitch or throttle or both.

[Titusx]

What Naza H do with throttle is lock its position when you switch from Manual to Atti or GPS Atti.
Naza H need control on throttle for Fail Safe and when Semi auto take off and landing will be available.