Ah the Gaui-365, this is a blast from the past. I went looking for the one I sold cheap on eBay but it was so long ago eBay doesn't have the item any more. All I can find is the thread where I bought one:
I do not recommend the Gaui-365 on a heli unless you are on a really tight budget, even then it is best to just stick to a flybar. The Gaui has a number of problems related to vibration (the manual recommends sticking coins to the unit, seriously!) and lacks the ability of dynamic tuning which is the biggest plus of flybarless system in my opinion.
Back to your actually question: Gyros with planes, done loads of that and had full axis stabilisation on my old turbine f-18. There is one thing to watch but most people overlook: As speed increases the control surfaces become more effective, hence you need to lower the gain of the gyros the faster the aircraft flies.
To do this, I used a board that I designed with an AVR and a pitot airspeed sensor. It was more complex than this but basically as airspeed increased, gain was reduced, I used gy401s x 3 in rate mode as they are excellent and have remote gain which I needed.
You could maybe do the same with mixing gain to gyro control channels, roll and pitch normally require a different gains, I used a lookup tables on the AVR and extrapolated between points that I had tested against speed. I gave away a quite few of these boards and around 10 are flying in large scale models and a couple more in basic home made rudder only UAVs.
Hi Morli !
I also understand that you are nowadays loving UDB very much.
In channai there is one person called Mr. Sai - 09380577074, you can get Multiplex Easystar from him in Rs. 8500, delivered to your doorstep. All the default gains of latest firmware are primarly for Multiplex Easystar.
One of my friend got this plane from him few days back. It is really very strong and bears lots of crash landings.
KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System
New type of sensing process provides reliable geographical positioning, completely independent of the visible horizon.
Particular CCD sensor can catch the ground picture to compare, and prevent helicopter from drifting.
Adjust the working status of Flymentor by AUX Channel, switchable gain system offers three different positions: Off, stabilisation and Position-holding mode.
Head lock gyro outside setting and Swashplate mixer.
Control the sensitivity and mode of gyro by GEAR Channel.
Support helicopters with 3S 120°swashplate,or 3S 140°swashplate,or 4S 90°swashplate, or 4S 90°+45°swash plate.
Attitude stabilisation in inverted flight.
Set Flymentor by computer USB adapter.
If you use FM/PPM radio equipment, Flymentor will make the ailerons, elevator and tail servo back immediately. The pitch will remain in the final signal position. And Flymentor will switch to position mode automatically. The sensitivity is 70%.
Installation Photos:
Video:
Morli, one more thing, that I am golder member of himodel.com and have done shopping from them worth 2789.95US$, see the screenshot of my a/c with them. They give me 10% discount and if I buy this item from them then I will get it in around 112$
KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System | GL
KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System from manufacturer GL, in category Gyros.
Morli, the reviews of this product @HobbyKing are even better. It uses CMOS sensor to actually compare the ground photo and restrict drifting. It has and even much more functions like auto recover in 3-D manuevers.
I have not used it but seems pretty good and reviews are quite positive and price is around 10$ less.
Flymentor 3D helicopter stabilisation System
Flymentor 3D is a stabilization unit that helps the helicopter to self-stabilize in hover and also self recovery during 3D manuever.
This unit comes with 5 items; the main unit, gyro, CCD sensor, CD software and usb data cable (manual is in PDF format in the CD).
Features:
Control all movement, including attitude stabilization, speed control, position locking.
CCO sensor to capture picture of ground, comparing pictures to avoid drifting.
Switch working mode (horizontal mode and position mode) through AUX channel.
Integrating head locking gyro and swash plate mixer.
Control sensitivity and mode of internal gyro through GEAR channel.
Support swash plate 3S 120°, 3S 140°, 4S 90°, 4S 90°+45°
Keep balance in inverted flight.
Configured by computer through USB.
If you are using FM/PPM remote control device, when helicopter is out of control, the Flymentor 30 will set aileron, elevator, rudder to neutral, and keep pitch in the final signal position, and switch to positioning mode automatically, the sensitivity is 70%.
Specification:
Voltage: 4.8-6.0V
Current: 55mA (under 5V)
Weight:37G
Temperature: OC~ +40C
Under the stabilisation mode and positioning mode, maximum rotate speed allowed: J Aileron and Elevator: ,;2000 / s
J Tail turning (if using external gyro): ,;3600 / s
What they mean is you can fly 3D while using this product. If I flip inverted and let go of the sticks it's going to do whatever it's going to do without me touching the sticks. Meaning if it's slightly tilted and falling to the right it's going to keep doing that and the gyro won't stop it. Their term stabilizing is different than ours. In the past with a gyro they had drift (well cheap little Chinese Walkera Heli still do). They also did not compensate for torque as you added and removed throttle. The Tx would have (and most still do) a way to feed rudder as you increase throttle to compensate. Well, newer units like this one will simply correct. As it detects movement it will counter it. So in a sense it does "stabilize". But also if you give it rudder the tail will spin and if you let go of the rudder stick it may stop spinning but still slowly drift. It's basically a 3 axis gyro with some mixing to allow it to control a flybarless head. I'm not putting it down as that's pretty cool for RC Heli Guys like me but it's for sure not doing what we usually call stabilization. HeliCommand is a stabilizing system. Did that answer your question? -David
This product will not hold a model helicopter in place. It's a bit misleading. If you have one of these in a heli and let go of the sticks it will not stop it from doing whatever it is about to do. Just like a gyro you must set it up properly to even work. I have this exact unit for my t-rex 450 pro I'm building. I just like flybarless as the flybar robs some of the power as it spins around. It's also another source of vibrations if not perfectly balanced. These units are also popular if you have a 3 or more rotor head and can't use a flybar. -David
I think that to compete you need to bring some sort of added value to the market place. And you need to keep moving or you will be left behind. If the open-source guys put out a good product that supercedes your own, then develop something on top of that so you are still pushing forward, still adding value, still attracting customers.
Consider the DIY drones store. They sell some of their own stuff, and they also repackage some spark fun stuff. Why would I buy from DIY if I can buy from sparkfun? Maybe DIY has preconfigured the firmware, or attached the connectors, or tested the item or something? Could be a lot of reasons. Why would I buy an ardu-pilot-mega when I could go to spark fun and buy an ATMega1280 dev board with all the same pins pulled out? Again, because DIY designed a board that adds value (servo muxing for instance.)
What if I took the ardu-pilot-mega board from DIY and wrote some firmware that did something spectacular. I could have a product. I could sell it.
Sitting on your butt is a recipe for business disaster, but smart people who work hard shouldn't have anything to worry about.
Comments
Has anyone tested how high in Meters the Flymentor works ?
Mike
http://www.helifreak.com/showthread.php?t=99189
Sure, it will work on a plane but there are much cheaper and easier solutions.
See this thread, posts 85 and 90 from 2008:
http://www.rcgroups.com/forums/showthread.php?t=923947&page=4
I do not recommend the Gaui-365 on a heli unless you are on a really tight budget, even then it is best to just stick to a flybar. The Gaui has a number of problems related to vibration (the manual recommends sticking coins to the unit, seriously!) and lacks the ability of dynamic tuning which is the biggest plus of flybarless system in my opinion.
Back to your actually question: Gyros with planes, done loads of that and had full axis stabilisation on my old turbine f-18. There is one thing to watch but most people overlook: As speed increases the control surfaces become more effective, hence you need to lower the gain of the gyros the faster the aircraft flies.
To do this, I used a board that I designed with an AVR and a pitot airspeed sensor. It was more complex than this but basically as airspeed increased, gain was reduced, I used gy401s x 3 in rate mode as they are excellent and have remote gain which I needed.
You could maybe do the same with mixing gain to gyro control channels, roll and pitch normally require a different gains, I used a lookup tables on the AVR and extrapolated between points that I had tested against speed. I gave away a quite few of these boards and around 10 are flying in large scale models and a couple more in basic home made rudder only UAVs.
I also understand that you are nowadays loving UDB very much.
In channai there is one person called Mr. Sai - 09380577074, you can get Multiplex Easystar from him in Rs. 8500, delivered to your doorstep. All the default gains of latest firmware are primarly for Multiplex Easystar.
One of my friend got this plane from him few days back. It is really very strong and bears lots of crash landings.
http://www.himodel.com/radios/KDS_Flymentor_3D_Flight_Attitude_Stab...
KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System
New type of sensing process provides reliable geographical positioning, completely independent of the visible horizon.Particular CCD sensor can catch the ground picture to compare, and prevent helicopter from drifting.
Adjust the working status of Flymentor by AUX Channel, switchable gain system offers three different positions: Off, stabilisation and Position-holding mode.
Head lock gyro outside setting and Swashplate mixer.
Control the sensitivity and mode of gyro by GEAR Channel.
Support helicopters with 3S 120°swashplate,or 3S 140°swashplate,or 4S 90°swashplate, or 4S 90°+45°swash plate.
Attitude stabilisation in inverted flight.
Set Flymentor by computer USB adapter.
If you use FM/PPM radio equipment, Flymentor will make the ailerons, elevator and tail servo back immediately. The pitch will remain in the final signal position. And Flymentor will switch to position mode automatically. The sensitivity is 70%.
Installation Photos:
Video:
Morli, one more thing, that I am golder member of himodel.com and have done shopping from them worth 2789.95US$, see the screenshot of my a/c with them. They give me 10% discount and if I buy this item from them then I will get it in around 112$
I have not used it but seems pretty good and reviews are quite positive and price is around 10$ less.
Flymentor 3D helicopter stabilisation System
Flymentor 3D is a stabilization unit that helps the helicopter to self-stabilize in hover and also self recovery during 3D manuever.This unit comes with 5 items; the main unit, gyro, CCD sensor, CD software and usb data cable (manual is in PDF format in the CD).
Features:
Control all movement, including attitude stabilization, speed control, position locking.
CCO sensor to capture picture of ground, comparing pictures to avoid drifting.
Switch working mode (horizontal mode and position mode) through AUX channel.
Integrating head locking gyro and swash plate mixer.
Control sensitivity and mode of internal gyro through GEAR channel.
Support swash plate 3S 120°, 3S 140°, 4S 90°, 4S 90°+45°
Keep balance in inverted flight.
Configured by computer through USB.
If you are using FM/PPM remote control device, when helicopter is out of control, the Flymentor 30 will set aileron, elevator, rudder to neutral, and keep pitch in the final signal position, and switch to positioning mode automatically, the sensitivity is 70%.
Specification:
Voltage: 4.8-6.0V
Current: 55mA (under 5V)
Weight:37G
Temperature: OC~ +40C
Under the stabilisation mode and positioning mode, maximum rotate speed allowed: J Aileron and Elevator: ,;2000 / s
J Tail turning (if using external gyro): ,;3600 / s
Consider the DIY drones store. They sell some of their own stuff, and they also repackage some spark fun stuff. Why would I buy from DIY if I can buy from sparkfun? Maybe DIY has preconfigured the firmware, or attached the connectors, or tested the item or something? Could be a lot of reasons. Why would I buy an ardu-pilot-mega when I could go to spark fun and buy an ATMega1280 dev board with all the same pins pulled out? Again, because DIY designed a board that adds value (servo muxing for instance.)
What if I took the ardu-pilot-mega board from DIY and wrote some firmware that did something spectacular. I could have a product. I could sell it.
Sitting on your butt is a recipe for business disaster, but smart people who work hard shouldn't have anything to worry about.
Just my opinion, nothing more :-)
Curt.
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