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Old Aug 19, 2010, 05:24 AM
www.shop.trisembly.co.za
rcimports's Avatar
South Africa
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Thanks Niall, sent you a PM.
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Old Aug 19, 2010, 07:45 AM
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cvandenb's Avatar
Manchester
Joined Jul 2008
464 Posts
Quote:
Originally Posted by Niall View Post
OK Charl and Dion, I found the problem with Charl's chips. .....
Hi Niall,

That is excellent news !! Thank you again for the support and looking forward to getting the updated chips

Charl
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Old Aug 19, 2010, 08:13 AM
a little boy's dream come true
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France, Corse, Santo-Pietro-di-Tenda
Joined May 2009
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Quote:
Originally Posted by Jakub J View Post
How long?

If you want fly longer than a few minutes, and safe
do not excess 350-400g / motor...

Jakub
why is that Jakub?
I have a quad with motors giving as much as 2500+g each, I don't think it would be "unsafe" to request 1000g for hovering, don't you think

Quote:
Originally Posted by Jakub J View Post
Quad 1650g weight is way too heavy!
You can make without problem quad RTF <> 800g
Well this is true... and untrue.
It depends on the machine you build and what it carries.
So yes, 1650g for an empty 50cm machine is way too heavy, but if it is for a complete machine with camera mount, camera, video downlink and battery (ies), it really is a very decent weight.
So it's only a matter of what you use for he intended job, then try to keep motors + escs + propellers + batteries so that a 2/1 thrust to weight ration is achieved, and you'll be just fine.
FYI, best motor efficiency generally is achieved around 1/3 o max thrust.

FWIW,
Bob
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Last edited by bob.titus; Aug 19, 2010 at 08:26 AM.
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Old Aug 19, 2010, 08:42 AM
manuLRK
Belgium
Joined Sep 2004
1,529 Posts
PCB TH V6 finished...

All recycled parts, this makes it longer to assemble, but it is "learnfull"! I can start the programming now! ...

Any suggestions for the next? How to check the circuit before putting the IC? ...
I will use the USBasp and eXtreme Burner.

manuLRK
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Last edited by alll; Aug 19, 2010 at 08:48 AM.
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Old Aug 19, 2010, 09:52 AM
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Joined Oct 2005
1,662 Posts
Getting crazy and will hack the FY20A for the KK

OK, after tested the FY20A and found that I should maximise it and make exery dollar spend worth!!.

If I just add the FY20A to the KK Quad, the gyro mode seems like a monster to adjust the gain to match the KK. So only direct switch to Stable mode which fly ok and feel like added insurance in case of lost orientation. - Not optimum!!!

The self correct takes few seconds to get back to level and it still drift a fair amount.

Since the FY20A already have the Gyro build in, why not use it to direct the KK as well???

I am going to use the KK board w/o Gyro and tap out the Roll/Pict/Yaw Gyro output and connect direct to the KK Gyro input. The FY20A is using the LPR/LY 530 which having very similar spec on ref voltage so I assume this should be a direct drop in.

I just done a voltage tap from the chip output pin after the 10K resistor is Zero at 1.25 (maybe my meter is not that great as rated Ref is 1.23 according to spec). Done some shake and it does jump sometime above 1.6V. Assume it wont be that extreme in actual flight.

What do you think? Make sense?

Will post some picture tomorrow as only will start to do the solder tomorrow.. it is late now..

Cheers!

Dan

ps: spec for the Gyro in FY20A
http://www.st.com/stonline/products/...2/lpr530al.pdf
http://www.st.com/stonline/products/...1/ly530alh.pdf
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Old Aug 19, 2010, 09:53 AM
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Quote:
Originally Posted by thanhTran View Post
As long as you align the gyro with the arms, I don't think the orientation would cause problem. Mine is like this:

Thanks,
What's the total value of the output capacitors? I can see you have one on the gyro board and two connected parallely on the controller board.
Chris
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Old Aug 19, 2010, 09:57 AM
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Bob, on your trouble shooting guide, why do you recommend setting the ESCs to NMh mode instead of Lipo, even when Lipo is being used? I am recalibrating my ESCs and I thought I should find out the reasons why that setting works better..

Cheers,

Niall
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Old Aug 19, 2010, 10:01 AM
Jakub J's Avatar
Krakow/POLAND
Joined Dec 2009
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Quote:
Originally Posted by Niall View Post
Bob, on your trouble shooting guide, why do you recommend setting the ESCs to NMh mode instead of Lipo, even when Lipo is being used? I am recalibrating my ESCs and I thought I should find out the reasons why that setting works better..
...
This is probably guide to quadpowered controler...

I did not see any reason to do this with KK

J.
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Old Aug 19, 2010, 10:09 AM
a little boy's dream come true
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France, Corse, Santo-Pietro-di-Tenda
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Quote:
Originally Posted by Niall View Post
Bob, on your trouble shooting guide, why do you recommend setting the ESCs to NMh mode instead of Lipo, even when Lipo is being used? I am recalibrating my ESCs and I thought I should find out the reasons why that setting works better..

Cheers,

Niall
yes there is a major reason : when you set to LiPo you activate LiPo cut off, and you really don't want your motors to shut off in flight, do you
When set to NiMh, escs won't cut off when battery is low, and that's exactly what you want.
Quote:
Originally Posted by Jakub J View Post
This is probably guide to quadpowered controler...

I did not see any reason to do this with KK

J.
Do you see the reason now Jakub
This setup applies to any multirotor, only the section in orange concerns quadpowered specifically.
After you have built and flown enough different platforms, you will realize the similarities...

Hope this helps,
Bob
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Old Aug 19, 2010, 10:09 AM
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Quote:
Originally Posted by Jakub J View Post
This is probably guide to quadpowered controler...

I did not see any reason to do this with KK

J.
What settings do you use for your ESCs Jakub? Are they Turnigy Plush?

I am compiling a big list of FAQs.

Cheers,

Niall
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Old Aug 19, 2010, 10:11 AM
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Quote:
Originally Posted by bob.titus View Post
yes there is a major reason : when you set to LiPo you activate LiPo cut off, and you really don't want you motors to shut off in flight, do you
When set to NiMh, escs won't cut off when battery is low, and that's exactly what you want.
Do you see the reason now Jakub
This setup applies to any multirotor, only the section in orange only concerns quadpowered only.
After you have flown enough different platforms, you will realize the similarities ,)

Hope this helps,
Bob
LOL, experience is the best teacher.. I will put this explanation in the Tutorial.

Cheers,

Niall
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Old Aug 19, 2010, 10:59 AM
Jakub J's Avatar
Krakow/POLAND
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Quote:
Originally Posted by Niall View Post
What settings do you use for your ESCs Jakub? Are they Turnigy Plush?

I am compiling a big list of FAQs.

Cheers,

Niall
TowerPro 12A, Turnigy 10A - settings typical, nothing special

J.
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Old Aug 19, 2010, 11:05 AM
Jakub J's Avatar
Krakow/POLAND
Joined Dec 2009
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TRI v3 ;)

Hi

Do you remember my first video with TRI crash at the end?

I spend last days working with this problem and here are results
http://www.youtube.com/watch?v=o7Tjrz89Qqw

Servo: Hitec HS-65HB
Props: GWS 10x4.7" SF

I'll make tests a few other servos and make list of "tested and approved"

Jakub
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Old Aug 19, 2010, 11:08 AM
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Quote:
Originally Posted by Jakub J View Post
Hi

Do you remember my first video with TRI crash at the end?

I spend last days working with this problem and here are results
http://www.youtube.com/watch?v=o7Tjrz89Qqw

Servo: Hitec HS-65HB
Props: GWS 10x4.7" SF

I'll make tests a few other servos and make list of "tested and approved"

Jakub
Yes please do, and for motors also. I have ordered some RC-Timer 750Kvs and I am looking forward to trying them out. My Strong Power 1100KVs are too much for my quad.

Niall
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Old Aug 19, 2010, 11:13 AM
a little boy's dream come true
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France, Corse, Santo-Pietro-di-Tenda
Joined May 2009
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Quote:
Originally Posted by Jakub J View Post
...I spend last days working with this problem and here are results :...
it's very good Jakub, your tri is very stable.
Do you use the default linear curve for your throttle or did you make a special curve?

Bob

Quote:
Originally Posted by Jakub J View Post
Default

J.
cool, thanks
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Last edited by bob.titus; Aug 19, 2010 at 11:24 AM.
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