Battery Mod Info

Phatzo · Feb 19, 2016

Raphael Dahan said:
Sorry but if you can explain what is:
FET, LVC
Thanks

Raf

LVC is low voltage cut
i forgot the FET - was faster

Field-effect transistor - Wikipedia, the free encyclopedia

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Mad_angler1 · Feb 19, 2016

FET is basically a tap for current flow, allows you to control exactly how much passes though it.

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Raphael Dahan · Feb 19, 2016

Mad_angler1 said:
FET is basically a tap for current flow, allows you to control exactly how much passes though it.

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Thanks to all
So it's a kind of flow regulator, smart diode?

Raphael Dahan · Feb 19, 2016

Phatzo said:
that will be very difficult because the program for communication is unknown... but to rearchitect - rebuild /plan the pcb would surley be a step forward. if R/D at dji would think about considering and give benefits to the ones that planned it better than dji itself would show gratitude i think. not to mention the credit that should be mentioned for the ones that ha e put in money and energy to improve the product.

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We need some hackers to find out this com program , but you are absolutely right, time and many are the name of the game.

JOEREZ1XM · Feb 20, 2016

dellycem said:
I am giving a break about the project;

Reasons;

- Ran out of donour batteries
- The smart circuit is not designed for connecting and removing all the time. You will see what I mean if you reach the point I am at now.
- There is an another battery design rumour going around assembled with 18650 cells, it will fail also, they will come to a dead end or already came. By the way it is not possible with 18650 cells, they do not have suitable C rates and voltage is way lower than a LiHV; available capacity today technology per cell is max. 3400mAh so 6s2p config will be 6800mAh weight will be nearly the same as original. Not logical to go that path.
- TB48 is being sold at USD290 in my country, I do not find it logical to franken a new battery.
- The battery needs to be user friendly, modifications I am planning is not. Why waste time on something not useful...
- Before you ask, it is not about the budget. I just need some time to think about creating something more effective and useful.

Regards.

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Where did you purchase that landing mode case with the propellers installed, I would like to buy one, do you have a website or part number?

damoncooper · Feb 21, 2016

Hover flight yesterday. Running into a DJI battery PCB limitation to fly longer. I think I may have a solution though. Possibly. Stay tuned.

JOEREZ1XM · Feb 21, 2016

damoncooper said:
Hover flight yesterday. Running into a DJI battery PCB limitation to fly longer. I think I may have a solution though. Possibly. Stay tuned.

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Tell me more about the setup, is this with dual TP HV 3500mah or single 7000mah. I just ordered a custom battery from MaxAmps 5550mah in a pyramid configuration that I'm going to try. I made it 20,000 feet one way on my 3700mah auxiliary battery before losing signal and for the first time I experienced a disconnect issue on the way back then it reconnected, the second time I had no connection zero information on my screen I was line of sight and had full control though, so have to look into the USB cable possibly and find out what happened. I also just ordered FPVLR air side signal booster for the Inspire 1, I'll post pictures and results when I receive it and figure out how to install it.

Phatzo · Feb 22, 2016

round two

PCB porn part two. ESC - as much as I could put it under the microscope as I did not want to solder off the PCB - sorry for that, hope the pics are ok though.
let me know.
cheers .

this are the first 10 of the lower side (heat sink) side. going from left top to left bottom then moving right and going up again.

Phatzo · Feb 22, 2016

second batch of the post above

Phatzo · Feb 22, 2016

the rest of the lower / bottom side.

Phatzo · Feb 22, 2016

and the upper side where the cables go to the motor.

Adelberg aerial imaging · Feb 22, 2016

Raphael Dahan said:
We need some hackers to find out this com program , but you are absolutely right, time and many are the name of the game.

Working on a new board which are the limiting factor as 4 chips are rated at 4500 and 5700. In order for app and craft to register higher mah host batteries using an empty cage with larger lipo units these 4 chips have to be changed. Hoping the new board will have better quality and will work. It might be a week or so until completed. Until then the only solution is to hack the board and change these chips which will not solve the quality issues !

damoncooper · Feb 22, 2016

Adelberg aerial imaging said:
Working on a new board which are the limiting factor as 4 chips are rated at 4500 and 5700. In order for app and craft to register higher mah host batteries using an empty cage with larger lipo units these 4 chips have to be changed. Hoping the new board will have better quality and will work. It might be a week or so until completed. Until then the only solution is to hack the board and change these chips which will not solve the quality issues !

There may be another way. Stay tuned

Phatzo · Feb 22, 2016

damoncooper said:
There may be another way. Stay tuned

yeah, some talks some sence into DJI R&D lol and they make a quality product for us as we invested into DJI LOL...
keep it up guys

new company will be DCRR LLC - Damon Cooper Rotations LLC

and make qualty products

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Raphael Dahan · Feb 22, 2016

damoncooper said:
There may be another way. Stay tuned

Surprise??

Raphael Dahan · Feb 22, 2016

Phatzo said:
and the upper side where the cables go to the motor.

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Phatzo, you make me scared with all your exllent images, with that images i rather stay AOG (aircraft on ground)

Terry Lowe · Feb 22, 2016

damoncooper said:
There may be another way. Stay tuned

Phatzo · Feb 22, 2016

Raphael Dahan said:
Phatzo, you make me scared with all your exllent images, with that images i rather stay AOG (aircraft on ground)

i am glad to be of help and not have too mich knowlidge about soldering (yet) as when i would i probably give it back to my shop.

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richeanx · Feb 25, 2016

damoncooper said:
Hey Rich, I do. I'll probably never run out of stuff to test but for right now those TP 2700's are really a great addition, super high quality and you'll love them.

HI Damon, I just finished up the battery mod this evening and it's a bit twitchy flying and I played with the gains a bit and seemed to get a little better but was wondering if you wouldn't mind sharing your numbers with the tp2700's? Also once in the air the gear won't raise with the extra batteries attached. Gear raises just fine without them attached to the frame..any thoughts on this?

damoncooper · Feb 25, 2016

richeanx said:
HI Damon, I just finished up the battery mod this evening and it's a bit twitchy flying and I played with the gains a bit and seemed to get a little better but was wondering if you wouldn't mind sharing your numbers with the tp2700's? Also once in the air the gear won't raise with the extra batteries attached. Gear raises just fine without them attached to the frame..any thoughts on this?

Can you show a pic of your setup?