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Dec 15, 2011, 04:56 PM
It flies!!! ... so who cares ?
erdnuckel2's Avatar
Yippee!

The OlliW gyromixer is coming to the community ...


... IF the community wants this!!

This is the chance for all guys interested to get one of OlliW's GA250 gyromixers. They can be used for brushless setups (that was the main intention) but also for brushed setups if combined with brushed ESCs! (which has been successfully done on a BOL in Germany)

Olli does not want this development to become a FOR profit item. However, as not everybody has the means necessary to successfully replicate this project (may that be a lack of time, maybe of patience, maybe a certain skill set ... just not the immediate ability to do that him/her - self) I could convince Olli to "produce" a small batch that is available on pre-order and will be distributed through me.

The cost for the parts would be the cost for the material and the cost for the shipping. Once it can be determined more exactly how much those shipping costs are I will let everybody who expressed general interest know what the "final" price for production is.
As Olli wants this to be a truly noncommercial item, there will be no mark-up beyond the costs I mentioned, and you will get this part basically for free once all material- and shipping cost is deducted. Making one of these mixers takes about 45 minutes and the "manufacturer" does this in his spare time, which is limited by many obligations. Also, please consider that the job is done by someone who does not have a minimum wage job. So everybody who finally placed an order may include a donation according to their liking

The complete project consists of three hardware items, listed next together with the best current estimate of the costs:

1) GA250 gyromixer ca. $17 (material + shipping HK-GE + GE taxes)

2) USB programming adapter ca. $13 (material + shipping within and/or to GE)

3) Programming box ca. $25 (material + shipping within GE)

To these costs add those for shiping the items from GE to US, and for shipping them within the the US.

The USB programming adapter allows setting the parameters of the gyromixer via a Windows GUI program and is needed to update the firmware. The programming box allows to set the parameters of the gyromixer in-field. You can find all tech details in the gyromixer thread.

For operation of the gyromixer you will need either one USB programming adapter or one programming box!

For a complete brushless or brushed conversion of your coaxial you will of course also need the appropriate ESCs, and in case of a brushless setup also the motors, pinions etc..

You can now "pre-order" the items you like to get here.

The further steps will be as follows: The GA250's are on backorder at HK at the moment, so once these become available we will tell you the actual costs and ask for a binding order. Olli will then order the materials he needs. It may take about 3 weeks to get them. He will then do the building, for which we estimate 2 to 3 weeks, and ship things over to the US which may take another 3 weeks. I will then send them to you, for which you should estimate another week. Hence, this project has to be expected to have a rather extensive time frame.

If you have any further questions on technical aspects or the details of the handling of the orders you are welcome to ask them here.

Please recall that this is an effort from private persons for private persons. There will be absolutely no warranty or liability from our side.

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Dec 15, 2011, 05:10 PM
The journey is the destination
I am interested in one. I was going to try making one myself but this might speed the process up.
Dec 15, 2011, 09:08 PM
Professional heli wrecker
Luvmyhelis's Avatar
As a guy who has built several of these I can highly recommend them. Especially with the new way Olli and Sven are going to market (offer at cost) these. These come pre programmed and in some cases might just seat right into the brushless system you are using and even function with the average gain setting programmed in by OlliW.
The field programmer will allow you do use live field settings while playing with the original setup of your gyro gain settings. Other than that, you then must do all your setup work with a TTL adaptor and usb link that is run by a downloaded program that is in your computer. It is a very simple easy to understand program. This will be the other method if not using the field programmer or Robibox.
I have flown one of the prototype versions of this. The tail of my highly modded Cx is locked in tight, with either HH mode or Rate mode.
The benefits of this mod are threefold. One, it replaces the separate Vtail controller needed, even the Dionysus coaxial mixer that costs $25 all by itself and which still requires a separate piezo gyro to function correctly. Unlike the gyromixer that is a single unit. The DD mixer being the better vtail mixer to use above common vtail mixers, since it is geared up towards coaxial motor function instead of servo function like a normal vtail mixer. Two, the gyromixer uses a much superior memms gyro. The benefits of this are fairly self evident. And the gyro itself is incredibly small and light weight. And again contains a highly programmable vtail mixer within itself.
Three, this system is multi adjustable on several fronts. You can change most of its base values to use any esc with it that is compatible with the amperage draw of your chosen motors. The rest of the programmable values are exciting but not needed for most simple coaxial brushless applications so I won't get into this here. I asked OlliW to contact Sven and create a way that the common enthusiast can obtain one of these with a proven distribution source such as HeliDeluxe can provide. My interest in this was in getting these amazing gyromixers into the hands of the common enthusiast that doesn't have the innate ability to program and build these in the necessary steps that it took me to overcome in building my own from scratch as needed. Much thanks for Olli's guidance during my building process is needed here.
Keep in mind, for those who are interested. This was originally designed as a DIY setup. And it is being offered on an at cost basis. No profits are being seen by OlliW nor by E2 in providing these. This was the single contingent basis of offering these to the public.
And much why there is no negligible warranty. A warranty would imply that a profit is made. As such in this offering since this is as an at cost basis it is a service to those who are interested in the sport of this hobby. It is my opinion that this mod will eventually replace all Vtail mixer brushless mods as seen in my thread here and in the Lama brushless mod thread. Especially in figuring out the overall cost of the individual project in comparison with the offered cost of this gyromixer. It is much cheaper, and much more effective.
https://www.rcgroups.com/forums/show....php?t=1331390

Randy
Last edited by Luvmyhelis; Dec 15, 2011 at 09:15 PM.
Dec 16, 2011, 12:08 PM
Location: Switzerland
Great!

I would like 2 of them.

Thank you folks to make this available to electronic autists like me
Dec 16, 2011, 07:58 PM
Registered User
I definitely want one of OlliW's GA250 gyromixers.

I have a question about getting either the USB programming adapter or one programming box!
I seem understand that if I get the USB programming adapter, I will need the computer software to use it and if so, How or where will I get this software program?
Secondly am I correct in assuming that the only advantage or difference between using the USB programming adapter or one programming box is that the programming box will require nothing else, and is more portable and can more easily be taken outside with the heli for making adjustments?

Although I haven't been active on the coaxial thread I have been reading and learning from you guys. I have to say that I appreciate very much the information that you have contributed and shared.
Bern
Dec 17, 2011, 08:44 AM
OlliW
Hey All, glad to see that some are interested.

I kindly would ask you to tell more specifically what you like to get, maybe let's use this format

1 x gyromixer,
0 x usb adapter
0 x box

cheers, Olli
Dec 17, 2011, 09:04 AM
OlliW
Hey Bern (or Ben?)

"I seem understand that if I get the USB programming adapter, I will need the computer software to use it"
yes

"How or where will I get this software program?"
from my GA250 gyromixer web site, the gyromixer thread here at rcgroups, or once this becomes relevant we may place it here.

"Secondly am I correct in assuming that the ... difference between using the USB programming adapter or one programming box is that the programming box will require nothing else, and is more portable ... for making adjustments?"
yes, mainly. (PS: I eliminated the text parts on the advantages/disadvantages because everyone has her/his own set of thoughts here. )

The usage is different in several aspects for the usb-adpater + Windows PC program and the programming box options. As a general thing, the programming box allows a faster tunning of the parameters because the repeated steps of setting a value and checking its effect in flight is faster. However, the Windows PC provides a better overview of your setting, allows you to store for later use and retrieve settings and so on. At the end of the day I think it's personal preference. For instance Randy seems to like better the box, I also do lik eit better, Tommy@LA from the German forum seems to like better the Windows program. It's of course also a question of money, I think the box is quite cheap for what it does (in particular if you compare to the prices of programming boxes for other gyros), but it adds another 25$ or so...

cheers, Olli
Dec 18, 2011, 12:19 PM
Location: Switzerland
2 x gyromixer,
1 x usb adapter
0 x box

Hey Olly

Is your mixer also available as finished product?

PS: I have a new GA250 gyro I could send to you from germany (I live right next to german border)
Dec 18, 2011, 12:29 PM
Location: Switzerland
Upgraded on request of my coax fellows:

4 x gyromixer,
1 x usb adapter
0 x box
Dec 18, 2011, 02:57 PM
Registered User
Quote:
Originally Posted by OlliW
Hey All, glad to see that some are interested.
I kindly would ask you to tell more specifically what you like to get,
cheers, Olli
Yes, to update my previous request, I would like to get:
1 x gyromixer,
1 x box

Thank you Olli for explaining the differences between getting the USB Adapter and or the programming box. For anyone who would like a more in depth explanation I found the information by Olli here:
https://www.rcgroups.com/forums/show....php?t=1450125

Bern
Dec 20, 2011, 02:14 AM
OlliW
the GA250 are now available again at HK...

LAST CALL, who wants to have one should tell now

We summarize so far:
Skills4life: 1x gyromixer, 1x usb adapter, 0x box
robins22: 4x gyromixer, 1x usb adapter, 0x box
bebev: 1x gyromixer, 0x usb adapter, 1x box


@Bern: you are aware that you would need a usb adapter for updating the firmware? Your order is perfectly fine, but I just want to ensure that you won't be surprised
Dec 20, 2011, 05:56 PM
The journey is the destination
Order update:
Skills4life: 2x gyromixer, 1x usb adapter, 0x box
Dec 20, 2011, 09:07 PM
Registered User
Quote:
Originally Posted by OlliW
the GA250 are now available again at HK...

LAST CALL, who wants to have one should tell now

We summarize so far:
Skills4life: 1x gyromixer, 1x usb adapter, 0x box
robins22: 4x gyromixer, 1x usb adapter, 0x box
bebev: 1x gyromixer, 0x usb adapter, 1x box


@Bern: you are aware that you would need a usb adapter for updating the firmware? Your order is perfectly fine, but I just want to ensure that you won't be surprised
No I didn't realize that I would still need the USB adapter.
Might as well include it then to revise my order>

bebev: 1x gyromixer, 1x usb adapter, 1x box.
Bern
Dec 22, 2011, 12:55 AM
OlliW
Hye Bern, I am not sure we managed to explain this properly:
Many of the newer rc electronics allow you to update the firmware AFTER you have bought the device. So, the electronics is working perfectly fine at the point you buy it, however, if the manufacturer provides a firmware update later on you can install it and are hence always up to date.
So it is here, If you have the gyromixer and the programming box, you can use the gyromixer without any restrictions. However, if at a later point an update of the firmware becomes available you would need the usb adapter for installing it.
So, you don't need it. I recommend however to have it. The firmware is used by three people so far, and is beyond the "teething troubles stage", however, future improvments I consider still likely. For instance, so far the firmware is tested for spektrum and ESky recievers, and it is written such that it is supposed to work with any reciever, but since it is (obviously ) beyond my budget to test it for all recievers it may happen that it doesen't work for your reciever but could be solved by modifying the firmware... but you couldn't install it. My consideration is: with any new user a new unexpected problem may occur, which, however, may be solved by a new firmware. For installing it one would need the usb adapter.
So, chances are that eventually you like to get an adapter. Building it requires only basic soldering capabilities, and if this is your plan you don't have to buy it now. If not I would recommend to get it now.
It's a bit confusing I know to see all the ifs and thens clearly, hopefully this clarifyed it.
Cheers, Olli

Skills4life: 2x gyromixer, 1x usb adapter, 0x box
robins22: 4x gyromixer, 1x usb adapter, 0x box
bebev: 1x gyromixer, 1x usb adapter, 1x box
Dec 22, 2011, 01:01 PM
Registered User
Thank You Olli for the clarification, I would like to be prepared for future firmware updates so I will take one each of the three items.
Being 68 years of age and for flying outside in the yard by my home, I find the easy to fly coaxials to be quite suitable for me.
Bern

Quote:
Originally Posted by OlliW
Hye Bern, I am not sure we managed to explain this properly:
Many of the newer rc electronics allow you to update the firmware AFTER you have bought the device. So, the electronics is working perfectly fine at the point you buy it, however, if the manufacturer provides a firmware update later on you can install it and are hence always up to date.
So it is here, If you have the gyromixer and the programming box, you can use the gyromixer without any restrictions. However, if at a later point an update of the firmware becomes available you would need the usb adapter for installing it.
So, you don't need it. I recommend however to have it. The firmware is used by three people so far, and is beyond the "teething troubles stage", however, future improvments I consider still likely. For instance, so far the firmware is tested for spektrum and ESky recievers, and it is written such that it is supposed to work with any reciever, but since it is (obviously ) beyond my budget to test it for all recievers it may happen that it doesen't work for your reciever but could be solved by modifying the firmware... but you couldn't install it. My consideration is: with any new user a new unexpected problem may occur, which, however, may be solved by a new firmware. For installing it one would need the usb adapter.
So, chances are that eventually you like to get an adapter. Building it requires only basic soldering capabilities, and if this is your plan you don't have to buy it now. If not I would recommend to get it now.
It's a bit confusing I know to see all the ifs and thens clearly, hopefully this clarifyed it.
Cheers, Olli

Skills4life: 2x gyromixer, 1x usb adapter, 0x box
robins22: 4x gyromixer, 1x usb adapter, 0x box
bebev: 1x gyromixer, 1x usb adapter, 1x box


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