Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

Hmm, I did not receive those boards yet. But please tell how they perform at 1 A :)

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

did you try the voltage adjustment mod?

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

no, because no time, bu today i start my solderstation, than i will try it too :)
i buy the resistors already

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

So, yesterday I tried out the new board. It works very well, I would say this better than the Pulolo boards. It is also up to slightly hot from little bit hot. But not as hot as in the Pulolo boards.

It charges continuously with 4.85v and 800mA. When the battery arrives at 3.04v, the board stops with the charge. He tried it anyway further boost, but only up to 2.52v, then the discharge protection stopt the charging.

Next step is to integrate a charge protection so that the battery is not more than 3.8 v loaded.

http://i57.tinypic.com/15p1h21.jpg

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

Good work!

There are a lot of chips than can manage charging of lipo's and li-ions.

lipo charger, chip also available separately
http://www.adafruit.com/products/259

even with qi wireless carging option intergrated (just chip):
http://www.ti.com/product/bq51051b

maybe you could even replace your chip with a relais/transistor triggered by the V33 output!

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

sounds interessting, but the board is little bit to big, but adafruit have a micro version:

http://www.ebay.de/itm/Adafruit-Mirc...item27dd61008e

than soldering a micro USB port, too

i will check where i cant find cheap in germany.

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

Exp-tech has it in stock:

http://www.exp-tech.de/Shields/Adafr...harger-v1.html

price is reasonable imho.

btw, very nice project!

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

cool thank you, from there I bought the pulolo boards. Highly recommend the company!

EDIT: Ok i buy two, have to wait 2-3 days for it

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

if you want to design a pcb with a charging and 5v regulator on board, let me know! the chips -almost the only part on those charging/regulator/booster boards- are very cheap!

Re: [WIP] Extended Accu Other Half - - - Kernel Modder needit !!!
 

sounds good, it will be nice to have only one PCB... maybe compact, too :)

i buy now two of adafruit micro usb lipo charger. i will test it :)