Powermat Charging integrated into DNA 30 unit?

[BuzzKilla]

When I made one, I too used the larger charge board posted earlier. However, I wasn't interested in plugging a USB lead in so I didn't bother with a hole.
My enclosure is over 1.5mm thick (0.06") and I've had no problems with the coil not charging the battery even after I wrapped the mod in vinyl.
I think I paid £7 for the mat and receiver delivered, so pretty damned cheap I'd say.

from dead to fully charged, do you notice the mod getting warm because of inductive charging?

my phone gets a bit warm, so i thought i would ask...

 

[Visus]

The cheapest unit with transmit and receiver I could find
Vapant do you have a link?

http://www.adafruit.com/products/1407?gclid=CKr33fuvkL0CFRQV7AodMSwATg
You can draw as much as ~500mA if the coils are 2 or 3 mm apart. If you only need 100 or 200mA you can be up 7mm apart.

 

[Euphonious Nonsense]

Powermat Blackberry Curve 8900 Receiver Battery Door Brand New | eBay

Cheapest ones you'll find.

Gimme a couple hours and ill link the transmitter unit, it was 4.99, I think it was @ bed bath and beyond?

 

[Euphonious Nonsense]

couldnt find the powermat transmitter that cheap online. I will go by my local store where I found mine and see if they have more this weekend.

 

[Visus]

couldnt find the powermat transmitter that cheap online. I will go by my local store where I found mine and see if they have more this weekend.

i found it @ 16 bucks not to bad the stores that had it cheaper all sold out..

https://www.google.com/search?q=POW...er&safe=off&tbm=shop&spd=11009121873411015740

 

[Vapant]

from dead to fully charged, do you notice the mod getting warm because of inductive charging?

my phone gets a bit warm, so i thought i would ask...

Yes, it does get a little warm but at the charger not at the coil.

The cheapest bundle I can find at the moment is £3.99 delivered but it is from the UK.
POWERMAT BLACKBERRY 9800 TORCH WIRELESS CHARGING MAT & RECEIVER BUNDLE | eBay

There's one here at $5 but I'm not sure about postage ($18.60 to UK)
Blackberry Curve 8500 9300 Wireless Charging System | eBay

 

[Euphonious Nonsense]

^The leads on that torch one are a pain in the ... to work with. The pearl is by far the easiest as it has 2 solder points that are exposed and already have lead tabs soldered to the board.

Avoid apple powermats recievers at all cost, they have a proprietary ribbon cable for the apple charging port, definitely SMD soldering material if you try to use one for this project.

 

[Euphonious Nonsense]

Still waiting on my damn battery boxes...

 

[Euphonious Nonsense]

OK so I got the new charging boards, before I start soldering just wanted to confirm I doing this correctly.

Can I solder to either of the points shown in the photo below or only the ones closer to the micro USB port?

High Resolution pic
http://i.imgur.com/0oRN7kb.jpg

 

[BuzzKilla]

If you can get a clean solder job in there it looks fine to use the long thin traces.

But that square point on positive side, doesnt seem to be connected to the positive trace, and looks to be just a mounting point for a different USB port.

So either the through holes, or the connections just above the USB should be suitable.

I would use the through holes myself, for the sake of running a descent gauge wire to the charging coil.
I dont know enough of induction technology to know if running a very thing gauge wire will affect the charging capabilities of the coil.

Hopefully someone else with more knowledge can chime in.

 

[asdaq]

OK so I got the new charging boards, before I start soldering just wanted to confirm I doing this correctly.

Can I solder to either of the points shown in the photo below or only the ones closer to the micro USB port?

High Resolution pic
http://i.imgur.com/0oRN7kb.jpg

I thought the extra in+ and in- where you have the wires are in addition to the micro-USB. Right where you have the wires- am I missing something? As for the wire gauge, it can be quite small. Something on par with what is in a usb cable, which I would guess to be around 28G, and those are 3- 5' long and carry 1-2A for charging.

edit: To be clear, the out+ and out- go to the battery, over on the other side of the board, and the in+ and in- take the power source, OR the micro-USB does.

 

[Euphonious Nonsense]

Thanks for clarifying that, I was hoping the IN+/- were going to allow me to circumvent soldering directly to the usb. Will post some more pix tonight when I get home and all is working. =D

 

[Euphonious Nonsense]

Got the first one up and running, ended up using 2 charging boards. Havent gotten to the soldering yet on the one using this new charging board though.

 

[Euphonious Nonsense]

Sooo ive been fighting with the second DNA chip. The damn thing works when I insert the battery wires into the hole/pad however after soldering the thing wont power on. I have resoldered this connection (using 4 different types of solder) at least 6 times and I get the same result every single time. I even tried another battery box thinking the one I was using may have been faulty. Any ideas?

 

[Euphonious Nonsense]

Better yet, Ive noticed that I can even solder while the DNA unit is on and it stays on even after completing the solder joint however when I remove the battery (same or different) and reinsert it in to the battery box the unit wont power back on.

 

[Euphonious Nonsense]

Well that turned out fail, managed to seperate the ribbon cable from chip #2. -_-

 

[Kgb424]

I got a question for some one to answer, I see the Evolve micro Usb Charger chip, has a charging current of 500ma, ok so If I was to use the micro Usb charger from JCMS Vapes, at 1amp, would you wire it to the battery, and not the chip or to chip then to battery. or is 1amp to much for the chip or too much for a single Sony VTC5 30amp 2600mah battery, or would I be better off using the Evolve charger chip.

 

[BuzzKilla]

The VTC5 can handle a charge just fine...

i'm a bit confused with your statement....

but as far as i am aware, the charger gets connected to the DNA and the battery gets connected to the DNA...
yoiu are just substituting the DNA charger for a JCMS charger.
in this setup the battery does not get connected to the charger directly.(this is off memory)

* be aware that i do not know if the circuitry in the DNA can handle the 1Amp current, you would want to contact Evolv directly for a proper answer.

 

[Kgb424]

If you look at the DNA20 and DNA30 spec sheet, it says the input current is 1.5amps, so I should be good with the 1amp charger, at half the time of the Evolve micro charger at 500ma. just wanted to make sure before,so I didn't screw up the DNA30 chips I bought to build mods.

 

[asdaq]

Post #2 still applies. The charger and battery are soldered to the same points on the DNA. It can handle the 1A just fine, and more than this especially to get up to 20- 30 watts during operation. Also remember that a battery acts as a giant capacitor, storing up energy for later use.

Sent from my Nexus 4 using Tapatalk