Gaui Need help for GAUI 500X +WKM GSP and Futaba 8FG super
- Thread starter Vojec
- Start date
Vojec
Member
I am stuck again. Finish the setup and go for my first fly ever, but end with 4 broke props. Notice some strange quad behavior. Because my knowledge is basic need help from expert guys on this forum again.
Let's start with my error. On normal condition must be:
If increase throttle stick, quad must just lift and stay in position, right? In my case quad lift after sec or two and just fly in random direction also increase speed. So I'm very scare about it, coz don't have control of my quad. Try GPS and Ati mode also cruise, home lock and off.
Really don't know what is the problem...
Also record a video for better visual idea.
I would appreciate any help and assistance.
Vojc
Let's start with my error. On normal condition must be:
If increase throttle stick, quad must just lift and stay in position, right? In my case quad lift after sec or two and just fly in random direction also increase speed. So I'm very scare about it, coz don't have control of my quad. Try GPS and Ati mode also cruise, home lock and off.
Really don't know what is the problem...
Also record a video for better visual idea.
I would appreciate any help and assistance.
Vojc
Last edited by a moderator:
Tomstoy2
Member
Hi Vojc, got your pm. Just got up. Not sure what is going on here yet, so. let's get some information.
Motor and propeller configuration is correct, right?
1. IMU, it's mounted in the center of gravity, or as close as you can get it and the arrow pointed forward, right?
2. You have measured the cog of the IMU and have the correct positive or negative distances entered in the assistant mounting screen?
3. I would expect motors to change speed when inputting rudder control. Motors have to change speeds in order to respond to input changes.
4. Looks like you have 2 red lights, meaning it has 6 satelites locked. Pretty quickly, too, especially indoors.
Here is how I test controls, but be very careful.
Hold the quad in your hand, above your head and start the motors.
Then advance the throttle to mid stick. It should feel light in your hand, like it wants to float. It should not feel like it wants to pull to any direction.
Input all stick movements slowly and you will feel if it responds correctly.
Shut down the motors.
Do not try gps inside. Manual or attitude only.
Ground testing is best done by tieing the quad to prevent it from flying away.
Ground effect will make the quad unstable. The gyro's and accelerometers get confused.
If it doesn't behave correctly in your hand during the test, then post some shots of all your assistant screens, along with some shots of your quads wiring. We need as much information as we can get in order to help.
Don't be embaressed to ask for help. We were all beginners once and well remember the experience.
Motor and propeller configuration is correct, right?
1. IMU, it's mounted in the center of gravity, or as close as you can get it and the arrow pointed forward, right?
2. You have measured the cog of the IMU and have the correct positive or negative distances entered in the assistant mounting screen?
3. I would expect motors to change speed when inputting rudder control. Motors have to change speeds in order to respond to input changes.
4. Looks like you have 2 red lights, meaning it has 6 satelites locked. Pretty quickly, too, especially indoors.
Here is how I test controls, but be very careful.
Hold the quad in your hand, above your head and start the motors.
Then advance the throttle to mid stick. It should feel light in your hand, like it wants to float. It should not feel like it wants to pull to any direction.
Input all stick movements slowly and you will feel if it responds correctly.
Shut down the motors.
Do not try gps inside. Manual or attitude only.
Ground testing is best done by tieing the quad to prevent it from flying away.
Ground effect will make the quad unstable. The gyro's and accelerometers get confused.
If it doesn't behave correctly in your hand during the test, then post some shots of all your assistant screens, along with some shots of your quads wiring. We need as much information as we can get in order to help.
Don't be embaressed to ask for help. We were all beginners once and well remember the experience.
Tomstoy2
Member
Sorry, looks like the lights are flashing 2 times at white, meaning attitude is fair, which is ok.
Right now, I'm not even sure you have a problem, but are just seeing ground effect. Do double check you motor clamps to ensure each motor is perfectly vertical to the quad.
Right now, I'm not even sure you have a problem, but are just seeing ground effect. Do double check you motor clamps to ensure each motor is perfectly vertical to the quad.
Last edited by a moderator:
Vojec
Member
Hi Tom. Checked as you advice and notice that motor 3 is not align with the boom (have 3 hard landings) so tune and screwing back. Now all 4 engines have default gradient (Fig. 1). IMU arrow is pointed to the right and GPS also (Fig.2,3). Also tested by your direction and yes working fine in my hands with sticks commands. Will try tomorrow just hovering to see what is going on. So again: If I advance just the throttle stick quad must lift up and hover, without moving right, left, etc, right. I imagine this is the purpose of throttle stick.
Fig 1 Fig 2 Fig3 Wiring
View attachment 2921View attachment 2922View attachment 2923View attachment 2924
Fig 1 Fig 2 Fig3 Wiring
View attachment 2921View attachment 2922View attachment 2923View attachment 2924
Attachments
Tomstoy2
Member
Yes, increase throttle to raise altitude. Decrease throttle slowly to lower.
The motor was deffinately leaning, glad you found that.
You will have to check this with all your motors as part of your pre-flight checklist as I have seen several posts about this happening to others with the Gaui 500. I would suggest placing a scrib mark on the motor mount and boom to easily identify this if one does not already exhist. Also do this where the boom clamps to the frame.
One thing still concerns me. I see in the picture you have the IMU and the GPS pointed to the right side.
As long as you have the IMU identified in the assistant as mounted to the right and written to the wkm that is fine, but I could find no such mention in the manual about the gps?
Did you try to fly this in gps like this and was it ok?
The motor was deffinately leaning, glad you found that.
You will have to check this with all your motors as part of your pre-flight checklist as I have seen several posts about this happening to others with the Gaui 500. I would suggest placing a scrib mark on the motor mount and boom to easily identify this if one does not already exhist. Also do this where the boom clamps to the frame.
One thing still concerns me. I see in the picture you have the IMU and the GPS pointed to the right side.
As long as you have the IMU identified in the assistant as mounted to the right and written to the wkm that is fine, but I could find no such mention in the manual about the gps?
Did you try to fly this in gps like this and was it ok?
Vojec
Member
Check DJI WKM manual again and yes, you are right about GPS (FIG. 1). Turn to front direction and recalibrate compass, place scrib mark on booms then hold fingers cross to make my first born flight. YES I DID IT YAHOOOO. I'm so happy like child, you know that awesome feeling in childhood that you wait for christmas present. That feeling I've seen today. Thank you for all support that you gave me. I also recorder my historical moment. That is completely different fight and navigate is so easy when you setup quad perfectly
.Please can you give me info is there some kind wobbling on hover state. I can't notice that. Or is better to attach gopro and tested?
View attachment 2938
and here my video:
Thank's again Tomstoy2. On my first pro areal shooting will be dedicated to you, will notice you...
Attachments
Last edited by a moderator:
Tomstoy2
Member
Good going!!! Glad we got it sorted. You are in for a lot of fun, my friend.
The wobble can be because of a few things.
First off, you mentioned wind, so you are going to see that happen as the motors compensate. Depending on the wind, the worse it is the more wobble you will notice.
There are a few things you can do to help yourself out, though.
Props need to be finely balanced. Even changing to a different manufacturer of props can make a huge difference. You've read all the inqueries about Graupner's. APC makes some very good props for a hell of a lot less. However, before you worry about props get your's as well balanced as you can get them. Watch some vids on how to do this.
Basically, a Dubro prop ballancer works very well and is not expensive. You find the heavy blade and scrape material away from the back side of the blade and then finely sand it with emery cloth to a smooth finish. Never do this to the top of the blade, this is the working surface. Myself, I take some emery cloth and break the fine sharp leading edge, also. That razor sharp edge doe's you no favors. I just remove enough so it isn't so easy to cut my fingers is all. It does make a difference.
Next would be to check your motors balance. There was a post a week or so back about an app for a smart phone that works well. There was included a vid on how to do this. In the video it showed the guy adding tape to the light side to eliminate vibes. This works, but you risk throwing off the tape, or at least pulling an edge loose.
I would take this one step further, myself. After discovering which side is the light side I would then mark the light side and take a file and remove metal from the heavy side until the vibs were down. This takes a lot of time as you need to do this in baby steps. You can always remove metal but not add it.
This kind of makes the motor look ugly, but I would rather live with that trade-off.
The foam flapping on the bottom isn't doing you any favors, either, so loose it.
I like the spring metal landing gear that the 500 uses, it's just not long enough for your application. Me, I would look for a metal working shop locally and get a length of spring steel from them and make my own, or have them cut them to length and curl the end so it doesn't try to snag anything on take off.
I would stay away from the pole landing gear that Gaui offers, it's a pain not worth the effort.
Make sure your IMU is really secure. I use a thin double sided rubber tape, like servo tape on mine. Works a charm. The IMU already has a very good vibration dampner system for the gyro's so you want to secure the IMU as best as you can.
Make sure all your wires are secure to the frame, also. you don't want anything loose flopping around. I know it sounds like a very small issue, but everything helps.
Congradulations, and good luck!
The wobble can be because of a few things.
First off, you mentioned wind, so you are going to see that happen as the motors compensate. Depending on the wind, the worse it is the more wobble you will notice.
There are a few things you can do to help yourself out, though.
Props need to be finely balanced. Even changing to a different manufacturer of props can make a huge difference. You've read all the inqueries about Graupner's. APC makes some very good props for a hell of a lot less. However, before you worry about props get your's as well balanced as you can get them. Watch some vids on how to do this.
Basically, a Dubro prop ballancer works very well and is not expensive. You find the heavy blade and scrape material away from the back side of the blade and then finely sand it with emery cloth to a smooth finish. Never do this to the top of the blade, this is the working surface. Myself, I take some emery cloth and break the fine sharp leading edge, also. That razor sharp edge doe's you no favors. I just remove enough so it isn't so easy to cut my fingers is all. It does make a difference.
Next would be to check your motors balance. There was a post a week or so back about an app for a smart phone that works well. There was included a vid on how to do this. In the video it showed the guy adding tape to the light side to eliminate vibes. This works, but you risk throwing off the tape, or at least pulling an edge loose.
I would take this one step further, myself. After discovering which side is the light side I would then mark the light side and take a file and remove metal from the heavy side until the vibs were down. This takes a lot of time as you need to do this in baby steps. You can always remove metal but not add it.
This kind of makes the motor look ugly, but I would rather live with that trade-off.
The foam flapping on the bottom isn't doing you any favors, either, so loose it.
I like the spring metal landing gear that the 500 uses, it's just not long enough for your application. Me, I would look for a metal working shop locally and get a length of spring steel from them and make my own, or have them cut them to length and curl the end so it doesn't try to snag anything on take off.
I would stay away from the pole landing gear that Gaui offers, it's a pain not worth the effort.
Make sure your IMU is really secure. I use a thin double sided rubber tape, like servo tape on mine. Works a charm. The IMU already has a very good vibration dampner system for the gyro's so you want to secure the IMU as best as you can.
Make sure all your wires are secure to the frame, also. you don't want anything loose flopping around. I know it sounds like a very small issue, but everything helps.
Congradulations, and good luck!
Vojec
Member
Now I'm confident with my little quad and put also cam mount from Alware. It is ok for a start. All weight with my cam is 2.100g huh a lot and with your battery formula I can fly for 5 min. Have 4S 3300 25C battery. Not bad.
Must tell that I have accident hard landing and I didn' t know what cause it. Search over big dady google and found it. It is video transmitter, because is on the same Ghz with my Futaba 2.4Ghz. I really didn't know that. I was lucky, coz my camcorder is ok and working also did not fly on high altitude.
Now I'm really enjoy with my new toy. Thanks Tomstoy2 for all support and help.
View attachment 2987
Must tell that I have accident hard landing and I didn' t know what cause it. Search over big dady google and found it. It is video transmitter, because is on the same Ghz with my Futaba 2.4Ghz. I really didn't know that. I was lucky, coz my camcorder is ok and working also did not fly on high altitude.
Now I'm really enjoy with my new toy. Thanks Tomstoy2 for all support and help.
View attachment 2987
Attachments
Problems with Gaui500
posted my question in a separate thread: http://www.multirotorforums.com/sho...nd-follow-ELE-and-AIL-stick&p=40158#post40158
I have also GAUI 500X and Futaba 8FG Super
posted my question in a separate thread: http://www.multirotorforums.com/sho...nd-follow-ELE-and-AIL-stick&p=40158#post40158
I have also GAUI 500X and Futaba 8FG Super
Last edited by a moderator: