RC India

Hey guys I'm trying to build my own quadcopter. I have gone through a few posts and selected the following components and attached the image.
can you all please go through the components and tell me your views.

I'm based in pune, and if possible would like to buy parts from here itself rather than online. I know only of RCbazzar located near baner.

Also, I want it to lift at least 1Kgs and hover for sometime.

From the list first thing you need is higher mAh battery. If you are new to the multirotor I wouldn't recommend you to try CC3D. You have to tune it a lot to get perfect PIDs.

Thank you , Dharmik!, yes, I'm a new to multirotors. Which flight controller do you recommend ???

Also, I have access to a FABLAB, will this board work ?? https://github.com/satshakit/satshakit-flight-controller

I was aiming for stable hovering. Also about the battery. How much amps do you recommend ???

Cheers!

Rohan,
from my own experiences and from loads of beginner posts on this forum, I'd advice you against building your own frame. A ready-made frame will add a bit to your expenses but it will save you a lot of headache.
A PVC frame will not only give bad flight characteristics but will also have higher chances of crashing and damaging your expensive electronic components. 

You'll need at least a 2200mAh battery. The C rating does not need to be higher than 35C for your setup.

I had asked this question (stable hover) to Swapnil above.  This is how he explained it me.

That depends on the height and external conditions. If the quad is high enough to be not affected by its own prop-wash, it will hold  a better hover.  Also, the less the wind the more stable the craft.  Again, these are ideal scenarios.  In reality for a really stable hove you will need a combination of alititude sensor (LIDAR for best results) and a rtk GPS or image processing system for position hold.
In low wind conditions, a good GPS (multiple sat systems receiver) will give a good enough hover.

I am really thankful to him for this ton of info.

Agreed, I'll get a DJI F450 frame. What about the flight controller ?? How about Naze32 or KK2.1.5 ?

I read people saying that Naze32 is hard to setup but very useful in the long run.

I'm upgrading battery to 2200 mah 25C

Naze32 and CC3D both are advanced flight controller but they are hard to tune and you will have to keep laptop with you to have correction in gain on field. Sometimes it takes so much time and flights. KK2.1.5 has advantage of lcd screen you can change gain and other settings quickly on the field. Default settings are good enough to work out of the the box and keeping self level on you can get good hover with minor stick correction.

I have Gens ace 2200mAh Battery, 2S-3S, 20C-40C..

I was wondering..why is pid tuning needed..isn't there a board that just connects the esc to it...and just flies them just like that....I mean just solder and fly.....
Never flown quads B4..just had me thinking....

Interesting question. That sort of ability requires a certain level of AI requirements and high processing power. Because it has to tune the PID values just like how a human would do it REAL TIME while flying. I believe the PX4 and ardupilot communities are working on this. I am not sure whether they've achieved it. You'll have to use google baba to find out.

Regards
Nitesh

EDIT: It can be done but has certain limitations. The copter needs to be flyable first. Check out the video.

https://www.youtube.com/watch?v=zE-NJUlXxe8 (https://www.youtube.com/watch?v=zE-NJUlXxe8)

EDIT 2: Found another useful article
http://www.dronetrest.com/t/arducopter-autotune-tips-how-to-get-rock-solid-stabilisation-with-your-multirotor/1551 (http://www.dronetrest.com/t/arducopter-autotune-tips-how-to-get-rock-solid-stabilisation-with-your-multirotor/1551)

Quads are more complicated that ithought...
Gonna stick to one motor and fixed wing for now... Xd

PID tuning is required because not all quads are same. 

Generally people mix and match the parts and assemble the quad.  So each and every quad is different (except RTF), the manufacturers really dont know what your setup is so they provide you a board with a standard PID settings.

PID tuning is more like "how much salt you like in your curry"

It depends upon personal test.  Someone might want a very agile quad, one might want a very stable quad, so you tune the PID's as per your requirements.

You can directly fly without PID tuning e.g. SP Racing F3 SP is factory tuned for 250 size quad, if you put it on 250 frame it should fly without any tuning. 

Not everyone uses same kv motors, same type of ESC's etc. that is the reason you go for PID tuning.

Swapnil N.

Hope this will help.

@ swapnil... excellent explanation.....
Gonna keep it in mind next time some one asks me about it...esp that salt analogy.... ;D

My 2 cents here .... ( My views)
1. research on motors again there are better motors than DT700
2. If you have made frame or have some experience go ahead and make yours, of course a ready made frame will save lot of trouble.
3. think lots .... what you ultimately want to do  with it. 2200 mah battery will only give around 10 min flight
 than decide on battery and motors.

10 inch pros are good enough for lifting 1.5 Kg quad. ( although its a generic statement ....what i mean here is select related components )

regds
Saurabh

Sorry was away due to some health issues. I'm working again on my QuadHexacopter. The payload is now ~3Kgs. Also I'm trying to maintain the power to weight ratio between 2 & 3. I have bought the props, motors, ESCs and 6Ch Transmitter and receiver. https://rotorbuilds.com/build/8924 (https://rotorbuilds.com/build/8924)

The earlier F450 frame is very small for my current props, so with a help of my friend I'm going to make it in carbon fiber.

I was originally going with Naze32 Full version, but it is not available here. My options are CC3D, Naze32 6DOF (Which are available for locally). I might if needed also buy other flight controllers online from Banggood or aliexpress. After looking at various reviews of Oscar Liang. I am quite interested and ready to pull the plug on Matek F405 CTR, in specifications it shows it has support for 6 motors but I can't find wiring diagrams for 6 ESC for the board. So I'm confused.

Naze32 6Dof seems okay, but I am pretty novice and don't want to damage the parts.

Cheers! :hatsoff:
Rohan




 

There seems to be a mismatch as i think.

A 3Kg Hexcopter and you will put these flight controllers ???? seems a bit odd.

Dear Friend do some research first.... you have a very long way to go if you cannot figure how to connect 6 esc and motors.

go for DJI or APM ( if you are advanced in making quad). Expensive but save a lot of money and time.

for interest have a look - http://www.rcindia.org/multirotors/black-widow-quad-for-filming/msg280219/#msg280219

My advice .

regds
Saurabh