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skvark |
2014-02-24
, 11:35
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Posts: 100 |
Thanked: 389 times |
Joined on Dec 2013
@ Finland
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#31
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Originally Posted by cvp
Hmm, I did not receive those boards yet. But please tell how they perform at 1 A
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2014-02-24
, 15:35
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#33
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no, because no time, bu today i start my solderstation, than i will try it too
i buy the resistors already
i buy the resistors already
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2014-02-25
, 08:36
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#34
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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.
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.
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2014-02-25
, 09:01
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Posts: 1,104 |
Thanked: 5,652 times |
Joined on Feb 2010
@ Holland
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#35
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Originally Posted by cvp
Good work!
Next step is to integrate a charge protection so that the battery is not more than 3.8 v loaded.
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!
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2014-02-25
, 09:42
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#36
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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.
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.
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2014-02-25
, 09:55
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Posts: 72 |
Thanked: 184 times |
Joined on Apr 2011
@ Germany
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#37
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Originally Posted by cvp
Exp-tech has it in stock:
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.
http://www.exp-tech.de/Shields/Adafr...harger-v1.html
price is reasonable imho.
btw, very nice project!
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2014-02-25
, 10:13
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#38
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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
Last edited by cvp; 2014-02-25 at 11:42.
EDIT: Ok i buy two, have to wait 2-3 days for it
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Last edited by cvp; 2014-02-25 at 11:42.
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2014-02-25
, 11:07
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Posts: 1,104 |
Thanked: 5,652 times |
Joined on Feb 2010
@ Holland
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#39
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Originally Posted by cvp
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!
cool thank you, from there I bought the pulolo boards. Highly recommend the company!
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2014-02-25
, 11:47
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#40
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Originally Posted by dirkvl
sounds good, it will be nice to have only one PCB... maybe compact, too
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!
i buy now two of adafruit micro usb lipo charger. i will test it
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