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skvark |
2014-02-13
, 18:06
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Posts: 100 |
Thanked: 389 times |
Joined on Dec 2013
@ Finland
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#11
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Originally Posted by dirkvl
No problems during my 15 min test. Only that Sparkfun board got a bit hot, could not touch it.
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2014-02-13
, 18:35
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Posts: 1,104 |
Thanked: 5,652 times |
Joined on Feb 2010
@ Holland
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#12
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Originally Posted by skvark
Okay, did you go to 100% charged?
No problems during my 15 min test. Only that Sparkfun board got a bit hot, could not touch it.
| The Following User Says Thank You to dirkvl For This Useful Post: | ||
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2014-02-13
, 19:52
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Posts: 738 |
Thanked: 819 times |
Joined on Jan 2012
@ Berlin
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#14
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Originally Posted by dirkvl
pogo pins? with 2 pulolo boards works good and charge, too. It is only little bit hot. I think its to hot if you have the phone in the pocket from your pans
Wasn't there problems with the charging via the pogo pins? With charging going on and off all the time?
... maybe good if its winter.... maybe we can say, that it is a winter feature 
__________________
www.sailfishmods.de
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2014-03-05
, 19:57
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Posts: 100 |
Thanked: 389 times |
Joined on Dec 2013
@ Finland
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#15
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Got yesterday those boost converters from China. From my endless scrap box I harvested Sparkfun single cell LiPo charger.
I modeled last night the Power Half 3D model (EDIT: https://github.com/skvark/TheOtherHa...epowerhalf.stl) and printed it today. Rest of the stuff was just pretty much soldering and gluing.
There's a power on/off switch at the bottom right side (there's inset so you can't turn it on or off accidentally) and USB terminal for charging.
Charging will light up bright led in the bottom left corner. When power is on there's less bright led at other side. Those leds are embedded to the Sparkfun board and to that boost converter board.
The power switch cuts the power between those two boards so the setup works in these modes:
CSD tool shows -780 - -790 mA charging current. The boost converter gets a bit warm but not too hot.
Costs for this setup were around 32-35 USD (23-25 EUR). Can be lowered by designing all-in-one board which has LiPo charger circuit + 1A 3,7 V -> 5 V boost converter. Unfortunately I don't have time to do it
Parts:
- Sparkfun single cell LiPo charger
- 1 A boost converter
- Copper tape
- 2000 mAh LiPo
- wire
- some SPDT power switch or something else
Pictures: http://relativity.fi/jolla_power/
Last edited by skvark; 2014-03-05 at 20:12.
I modeled last night the Power Half 3D model (EDIT: https://github.com/skvark/TheOtherHa...epowerhalf.stl) and printed it today. Rest of the stuff was just pretty much soldering and gluing.
There's a power on/off switch at the bottom right side (there's inset so you can't turn it on or off accidentally) and USB terminal for charging.
Charging will light up bright led in the bottom left corner. When power is on there's less bright led at other side. Those leds are embedded to the Sparkfun board and to that boost converter board.
The power switch cuts the power between those two boards so the setup works in these modes:
- Charge the phone only from the Power Half
- Charge the Power Half only
- Charge both simultaneously
CSD tool shows -780 - -790 mA charging current. The boost converter gets a bit warm but not too hot.
Costs for this setup were around 32-35 USD (23-25 EUR). Can be lowered by designing all-in-one board which has LiPo charger circuit + 1A 3,7 V -> 5 V boost converter. Unfortunately I don't have time to do it
Parts:
- Sparkfun single cell LiPo charger
- 1 A boost converter
- Copper tape
- 2000 mAh LiPo
- wire
- some SPDT power switch or something else
Pictures: http://relativity.fi/jolla_power/
Last edited by skvark; 2014-03-05 at 20:12.
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2014-03-05
, 22:10
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Posts: 126 |
Thanked: 59 times |
Joined on Jan 2011
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#16
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If you ever get the sudden urge to produce and sell these, don't fight it. I'd sign up for one
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2014-03-11
, 09:50
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Posts: 12 |
Thanked: 8 times |
Joined on Dec 2013
@ Jaca, Spain
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#18
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I want this so bad!! It looks really awesome... I need it for my looong trips.
Are you thinking about producing at big scale? I mean,the final version
Are you thinking about producing at big scale? I mean,the final version
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2014-03-11
, 15:05
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Posts: 100 |
Thanked: 389 times |
Joined on Dec 2013
@ Finland
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#19
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Originally Posted by petaqui
I don't have resources or time to produce these on large scale
I want this so bad!! It looks really awesome... I need it for my looong trips.
Are you thinking about producing at big scale? I mean,the final version
But that's why I provided part list, 3D model and other info so you can build one yourself.
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2014-03-11
, 16:30
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Posts: 242 |
Thanked: 269 times |
Joined on Mar 2010
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#20
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Originally Posted by skvark
Thanks for all the info and hard work. Please keep us updated on how it's working out (charging/battery time/other quircks...).
But that's why I provided part list, 3D model and other info so you can build one yourself.