RC India

Hello Friends

We are happy to announce launch of our long endurance quad.

Now you can fly 40mts with your GoPro, DJI H3-3D gimbal and DJI AV downlink.
You can fly 47 minutes or more without the payloads.

Attached are some pictures.

Regards,

Sphere Hobbies
Ahmedabad
+91-99251-20630
info@spherehobbies.com

price ?

What about the price ??

spoke to them, not for hobbyists only for gaverment or defence!! felt bad, i thought they were Sphere Hobbies , just curious why is it so??

regards,
JK

Dji and its associates are funny bunch. They f**k it up for everyone by selling phatumons to every brainless fellow.  and now selling to government. What jokers. Lol

Pravesh, I can totally agree with you on that.

Members

We do not supply (at this time) this product to individuals.

Sales/purchase inquires (from an individual) would not be answered.

Regards,

Sphere Hobbies
Ahmedabad
+91-99251-20630

Has this been put up in a public forum for members to drool over? ;)

Pravesh i think dji wanted everyone to have the experience if flying a "drone" but they forgot what could be done with them and how it could affect the community.

If you don't wanna sell this than why did you provide your contact details lol !! jocking or what !!

Don't worry guys endurance quad is not a big deal to built
But its quite expensive as you have to use lower kV high effiency motors(multi star) such as 320-380 kv with large props 15-17 inches with light weight low C rating battery … 40 mins is no big deal there are people who have achieve 1 hr and even more !!!

Even if you sell we dont want that.. very weak landing gears and small center plate..
I can easily get 40min with my 650 quad.. just 8000mah 6s
10ah even more..;D
And i can help or build to any individual who want this.. strictly not for government agencies..

well said arun sir.

:rofl:  well said

Like that.

Agree with roshan and Pravesh,
the said timing is only for no payload.
there are lot of tips and tricks and threads available online to get max timings.

Also i forgot to mention that the government already has the netra working for them, why would they need two diffrent quads?
Unless they want to waste our tax money in new way, banning use of multirotors applies to them also right?

Ya right nail

Unless they want to waste our tax money in new way

Isn't the NETRA a joke? was checking it out, I am no expert on anything though but it seemed like a very costly exercise considering what it offered. (I stand to be corrected)

I don't understand something. :headscratch: :headscratch: :headscratch:....why post if not willing sell ??? ??? ???

just makeing us jealous ??? ???........ :-\ :-\ :-\ :-\ :-\

maybe you can rephrase that then?

Hello Friends

We are happy to announce launch of our long endurance quad.

Now THE GOVERNMENT can fly 40mts with THE GOVERNMENT'S GoPro, DJI H3-3D gimbal and DJI AV downlink.
THE GOVERNMENT can fly 47 minutes or more without the payloads.

Attached are some pictures.

Regards,


dunno about you but that seems waay less misleading...   ;)

Very nice Aniket.

Very true, netra is a joke for the price it is being provided at to the government. And drdo has helped in its development also i think. Anyway sphere hobbies have faced a lot of flak. If it would have been a cheap endurance drone offered to future licensed multirotor pilots it would have been better received.

 ;D ;D ;D

Did not know that www.rcindia.org (http://) (http://) is only for BUY AND SELL.

Those who can build long endurance quad, please use this link and sell (if possible) it to prospective buyers.

Weather Netra is a joke or not. It is sold to many. So it's not a joke. tax money is spent, we have done nothing to stop it.  {:)}

Guys we are willing to know more from you.

Weak landing gear is taken care of. It has been already replaced by stronger and lighter landing gears.

Best regards,

Sphere Hobbies
Ahmedabad
+91-99251-20630

@Spherehobbies, Sir, www.rcindia.org (http://) was never a platform for only sale or buying of rc stuff.

You say that this Endurance quad is not for sale to open public (In my opinion that is a good decision :thumbsup: ) - but then your first post is just meaningless - that's what i think people are criticizing.

It is good if you are providing our govt. good quality stuff at competitive prices (We all know the expense of NETRA ) .

Why don't you share some tech. details of the quad if your purpose is not sale - that's what we expect as members of this forum .
Would like to know about the flight controller used and other details if it is not confidential (Assuming this is a Govt. project !!)

Rcindia.com is surely not only about buy and sell!! it is much more than that, first you guys should have mentioned the quad is not for hobbyists and only for government purchase!! second, when you guys mentioned
 "Now you can fly 40mts with your GoPro, DJI H3-3D gimbal and DJI AV downlink.
You can fly 47 minutes or more without the payloads."
we thought you mentioned us hobbyists , just so in case i forget remind me next when you guys mention 'YOU', it is the Goverment!!

not against you guys, just to make things clear!!

regards,
JK

Actually it doesn't seem that build and design is strong enough .
The landing skid issue though already discussed -  why those DJI Landing skids are attached to battery mount plate ?

Thanks Sooraj

This is what we expected from this forum.

The controller is NAZA V2. Our test flights made us learn that NAZA V2 is better then WKM (for endurance flight).
By using WKM same quad flew only for 28mts...All flights were made in open space and not in any confided area.
When we used other controllers like HK/APM etc.. the flight time remained between 25-30 minutes.
All the flights were with 305grams payload (DJI H3-3D+AVL58+GoPro 3 Black+)

Regards,

Sphere Hobbies
Ahmedabad
+91-99251-20630

@ SphereHobbies, electrically all FC's are almost same power consumption rate, but a multirotor with fine tuned FC should have longer battery life.

Did you ever tested flight time between fine tuned APM and without tuning in same hardware?

Tried every trick we knew. Same result.

Thanks for suggestions.

Sphere Hobbies
Ahmedabad
+91-99251-20630

Now we ve to Derive the relationship between FCB and power consumption. If an FCB is consuming more power then where the power is spent. in general excessive power is consumed in the form of heat. so now we can say that the FCB is getting over heated. But in such a case it ll burn. Then where the power is gone. the work of FCB is not to operate the motor directly, it ll only send commands to the ESC.And in turn the ESC gives an output to the motor in the form of voltage, a PWM signal. So by this we can say that the FCB is not the culprit. Which leads to another thought that is the excess power is consumed because other FCBs not fully Compatible with the brand of Motors and ESC used. Electronics behave strangely.

It's not the fcb consuming power
It's the fcb trying to keep the copter more stable requires more power
It all depends on the tuning at the end

Its like good driving skill  in car give more milage than bad driving( early gear shift, unwanted acceleration, unwanted braking).

A bad pid tuned multirotor always try to balance with
more power that needed so exceed the level point and give counter power to revert back to level
Or
with low power to balance will take too much time to balance.

Both consume more energy than perfectly tuned FC.

I don't want to divert topic. but as netra came up.
I am following development of netra from beginning. I happen to know one of the founder Ashish bhat from robotics. They are group of awesome coders, electronics and mechanical guys. They had to face infinite number hurdles you can imagine.
Ya it is expensive (20lac to 50lac) but there is a reason for that. At one point they were hand to mouth and were selling mobile chargers just to sustain them selves.

First of all it's not a governmental research project. it's now actually into production and being used by defence and other forces. So the question is what it takes to get there!

Drone has to work every time they take out of box even in war zone. No matter if it's air dropped or piggy bagged 100km. They had to get uncountable number of certifications for their drone. Each and every thing is indigenously developed. It's not like you buy APM, install it and sell it to government. Whole APM like system was to be built (when they started it didn't even existed). They had to develop IMU and its fusion algo by themselves. Communication was also a big challenge. and many such things. There are restrictions what all IC you can use. Unfortunately India do not manufacture any chips, so we have to depend on other countries. and they put restrictions on defence use. I can't even list giant number of challenges you have to face to get your product into defence use. I don't even want to talk about Indian bureaucracy. I atleast know 20+ companies who are trying to sell drones to Indian government. many are even into defence trials. But in years i have not even seen a single one into production.

I am not implying that there can not competition in Indian defence private sector. I am just trying to say it's not that easy to build a defence drone as it seams to backyard drone flyers.

But now it's relatively easy as whole APM is open source. you can adapt it's circuits, codes and call it indigenous. That's what most of companies are doing. And nothing wrong in that. You just need to fulfill defence criteria. There are still many pitfalls in netra that they are trying to improve. as one mentioned flight time. If you can come up with a better design. Defence people are all open to accept your product. Apart from defence there are other government institutions who are looking for drones.

Ps: Ideaforge is incubated in IITb. they are really nice people. you can easily go and talk to them. they are always flying in lawns of IIT. They have countless number of models they keep on trying.

http://www.homeshop18.com/ideaforge-mechanical-mobile-power-charger/mobiles/mobile-phone-accessories/product:30748/cid:3037/ (http://www.homeshop18.com/ideaforge-mechanical-mobile-power-charger/mobiles/mobile-phone-accessories/product:30748/cid:3037/)

NICE TO SEE SOME ONE SPEAK UP FOR iDEA FORGE.COS DRDO GUYS AND GOI ARE NO FOOLS THAT THEY WILL ACCEPT SOMETHING NON PERFORMING FOR 20 LAKHS PER UNIT.ALSO ITS A PLEASURE THAT SOMEONE ENGINEERED THE WHOLE THING IN INDIA EXCEPT IC'S(YEAH HOPEFULLY SOMEDAY THOSE ARE MADE IN INDIA TOO)  {:)}

again diverting more from main thread topic. There are many Fab labs in India but nothing commercial till now. on issue of IC fab labs India there are interesting answers on quora to understand isues and solutions. http://www.quora.com/Why-there-are-no-integrated-chip-fabrication-facilities-in-india (http://www.quora.com/Why-there-are-no-integrated-chip-fabrication-facilities-in-india)...

PS: One of our robu labs director Nilesh Chavan is IISc alumni. And he has few patents pending. One more associate of ours, Dilip Shilke is team leader who develops audio/video decoder for Iphone and Ipad GPU Chip. We are trying to explore possibilities into commercial Indian Fab Labs. Why i am telling you all this is because there is some substance to "rumours" that international community don't want India to manufacture there our IC's. No doubt Indian research labs keep on burning every now and then. Sad part is there is no news in main stream media about all these incidences and no intention from political class what so ever.

I hate being pessimist but, We Indians in general don't understand SCALE(in caps) of importance and benefits have fab labs in India. All we care about is any tom dick and harry undermining institutions like Ideaforge, who are doing great service to India. It's high time we all have to accept that capitalist approach contributes lot to the nation.

PPS: I should be nominated as spokesperson for Ideaforge

PPPS: I am so capitalist that I believe that political lobbying should be made legal in India.