General guidelines for good solder joints on the boards:

1. The boards have Organic Solvent Protection (OSP) layer so please wipe gently with acetone/nail polish remover around the contacts prior to soldering

2. Use a generous amount of solder flux and let solder flow in. Use a large soldering iron for the contact points (35w or similar). Wipe extra flux after soldering with acetone/nail polish remover for a bright finish

I will get HASL done in any further batches on which "nothing sticks like solder".

Thank you Boss! Grateful for your kind gesture...............again......................

"like"   

Thank you VC sir,

look forward to your feedback.

GS

Received the board yesterday. I will post review soon.

Omg I don't know how I missed this thread...
Well done girish bhai, I wish all the best for all your future projects..... I would like to get one board for me also also...

Sent from my Canvas using tapatalk 2

Girish - received the boards a while back now.

Good boards well made and adequate for the
intended purpose.

hi,

I use double side copper boards, works very well, available for Rs.30. cut a 1"sq and use one side for negative and other for positive.

i am happy with the result.

if still available, i will take one for review and testing on a heavy hexa.

Rahul pm me your address.

Arun the board leaves today...

Sbajare sir, very true.one wouldnt even need a pcb to do the connections . This is very much a novelty item
Was easy to produce domestically...when the only option atm is to buy from hk.

pm'd.
thanks, will let you know about the board after flying my hexa

Hello Girish sir, I'd like to test out one out on my FPV copters if you still have any.

Design is very good I'd buy 3-4 of these instead of the HK ones.

Rahul, Kabir
Your parcels posted yesterday.

Ive got some great feedback and some cons on the boards already. Thanks, really helpful. Look forward to more.

I have 6 boards left

Feedbacks??? where are the posted??

Gentlemen, invite you to post all your feedbacks here. I will post the ones ive recd in PMs in case they are not in your respective outboxes

Please please please sir do post it here. I am waiting

Gentlemen, here is an initial set reviews, verbatim, as I've got them (please ignore any personalizations apparent in the comments. I've pasted the comments from the original PM's to keep contexts alive. Any repetition of reviews indicates input by multiple reviewers):

pros:
1. i did not feel that the board is large or something. buts its better to make it even compact for quads less than 450mm.
2. Soldering is very easy.
3. Easily handles the current from a 2200mAh 20c 3s Lipo (total 44A). No heating observed even at full throttle.
4. Would have been better and easier to mount if this had the same, small footprint as the KK2.
5. The mounting holes need better placement. One of the holes is very near to the edge.
6. Must say that it is a quality product. No heating issues whatsoever.
7. For the first looks, it looks good.. little big though, clean and neat.


cons:

1. Where the ESC connects, holes should be bigger, so we can pass the 14/16 gauge esc wires through and solder easily and it will provide mechanical strength as well
2. the tabs are too closely placed to each other. I mean the tabs on the outer(+) and inner(-) ring on the board. and i had to put a lot of efforts in soldering them carefully.

Aditya (adityaamg) has kindly provided a video review of the board here:

http://www.youtube.com/watch?v=2nI5TPRyg20&feature=youtu.be


Many thanks to the reviewers: Aditya, Abhishek, Rahul...waiting on more reviews now.


-------------------------

Meanwhile, a newer board coming up ... I'm including the design below for initial comments.

- 1.75in x 1.75in...intended for 450 size
- Will have extra connection points for adding headers, so cameras, LED strips etc can be plugged in on the board (Thanks saurabhsrivastava for the input).
- I'm trying to include a SMD 5v regulator on the board as well, activated via jumpers/solder points.
- All holes will be 0.8mm, including on the large pads. user can drill further to required size.

The older boards will be still be available, for larger quads; Currently sorting out the spacing issues.

PS: Saurabh your custom board looks very similar but will have chamfered edges, instead of corners, and thicker copper traces, as we discussed.

Girish sir, since my comments have already been posted, here are some pics... 

Reviews
Observations
1.   Larger than the regular board of KK or HK.
2.   Single sided PCB.
3.   Large conductor tracks.
4.   Smaller holes for the ESC wires.
5.   very good quality GF PCBs
6.   Thick copper track for the conductors.
7.   Easy to solder.

Pros
1.   very easy to solder esc wires as more space available.
2.   good current carrying capacity without overheating as large track.
3.   ESC wires have to be soldered flat on the board as smaller holes anyhow better layout of wires because of that.
4.   Strong robust board since GF PCB good heat capacity without swelling of bubbles on PCB while soldering.
5.   very easy to solder as good quality copper board.

Cons
1.   cannot be used for smaller quads as bigger board.
2.   cannot be mounted on the same four screws of the FC board so cannot be mounted above along with FC.
3.   cannot be mounted between the center plates of X quad in 450 or less.
4.   Has to be mounted below the two center plates will interfere with the battery fitment.

Improvements Desired
1.   holes for the ESC wires may be increased for guys who would be interested in soldering ESC wires through the board.
2.   Gap between the track may be increased to benefit guys who are not so good in soldering.
3.   Soldering Pads can be offset to increase the gap between the adjacent exposed conductors pads and easy layout of ESC wires.
4.   Smaller board with thicker copper track is definitely more welcome.
5.   On board 5V regulated supply if being planned would be great improvement.
6.   Can't ask for anything more if it was double sided. will improve its current carrying capacity to a great extent further board can be made smaller with more flexibility for use.

Overall a great effort by Girish.   and three cheers for indigenisation and for a home brew product.  

Good solid review Sandy sir

Thanks Satya. Girish will say over delayed 

Sandy Sir,
Better late than never.

I really would love to hear more on the double sided requirement.  Are there commercial boards available that are double sided like you suggest?Sure it will realllly increase the current capacity if both sides have power planes (and it will behave like a capacitor ). That is indeed a great idea.

I now have a complete list of changes that I need to do with this board, and yes the 5v reg will be available in the smaller board, I will be using a SOT-89 package for 7805 for SMD mounting.

In double sided board the copper layer is done after the drilling of holes so therefore copper track also goes through the holes. then its etched on both sides

It is an industry manufacture procedure not DIY. So not really sure someone will do that for small scale requirement.