Hi,
I love the idea of wireless charging, especially with a waterproof phone so you don't need flaps or something like that for the charging port.
Ok, well the charging port of the xperia phones is very nice and I was using a dock quite a long time.
But hey, lets try charging the phone via qi.
This is the case thei the receiver mounted:
Since I decided modding the phone itself is not possible until larger modifications are made I decided modding a case to become a charging case.
The dock-ports are ideal for this.
So I bought a QI reciever. The reciever for the Samsung galaxy note II would do the job because the polarity matches with the polarity of the dock port (the upper one on the phone is the positive terminal).
The first receiver I bought was mechanically perfect because it is very small and thin. I taped it to a QI charger and connected the pins via lab wires to the phone. Unfortunately the receiver starts pulsing its output. I think the phone draws more current than the receiver could handle. Watching the receivers output with a scope showd that the receiver has much ripple and the voltage is around 7 V. This is to much, luckily the phone took no damage.
Here is a photo of the bad one:
So I bought a second receiver.
I'm from germany so, this is a link to german amazon.
You have to remove the 2 gold pins and replace them with 2 spring contacts.
I was using these contacts:
Put the receiver in the case, put in the phone and align it, so the spring contacts can touch the dock connector.
The remove the phone, fix the receiver with some tape and use a 2 component epoxy the fix the part with the spring contacts at its correct position.
Oh, and cut a hole for the flashlight led of the phone.
I used J-B-Kwik.
I uses the glue also at the outside to provice stability:
the case is just a bit to small for phone and receiver but it holds the phone nicely.
I forgot my qi charge at the office so I cannot provice a image with the phone charging, I can take a picture tomorrow.
Yes, the performance would be better if the receiver is mounted below the plastic case between plastic and leather. But is is to big for that. Even cutten the edged is not enough.
Here is a comparison with the old, non working receiver, it is smaller and I cut the edged.
I works well enough.
Hopefully this would be usefull for somebody.
I you have any questions, don't hesitate to ask.
I love the idea of wireless charging, especially with a waterproof phone so you don't need flaps or something like that for the charging port.
Ok, well the charging port of the xperia phones is very nice and I was using a dock quite a long time.
But hey, lets try charging the phone via qi.
This is the case thei the receiver mounted:
Since I decided modding the phone itself is not possible until larger modifications are made I decided modding a case to become a charging case.
The dock-ports are ideal for this.
So I bought a QI reciever. The reciever for the Samsung galaxy note II would do the job because the polarity matches with the polarity of the dock port (the upper one on the phone is the positive terminal).
The first receiver I bought was mechanically perfect because it is very small and thin. I taped it to a QI charger and connected the pins via lab wires to the phone. Unfortunately the receiver starts pulsing its output. I think the phone draws more current than the receiver could handle. Watching the receivers output with a scope showd that the receiver has much ripple and the voltage is around 7 V. This is to much, luckily the phone took no damage.
Here is a photo of the bad one:
So I bought a second receiver.
I'm from germany so, this is a link to german amazon.
You have to remove the 2 gold pins and replace them with 2 spring contacts.
I was using these contacts:
Put the receiver in the case, put in the phone and align it, so the spring contacts can touch the dock connector.
The remove the phone, fix the receiver with some tape and use a 2 component epoxy the fix the part with the spring contacts at its correct position.
Oh, and cut a hole for the flashlight led of the phone.
I used J-B-Kwik.
I uses the glue also at the outside to provice stability:
the case is just a bit to small for phone and receiver but it holds the phone nicely.
I forgot my qi charge at the office so I cannot provice a image with the phone charging, I can take a picture tomorrow.
Yes, the performance would be better if the receiver is mounted below the plastic case between plastic and leather. But is is to big for that. Even cutten the edged is not enough.
Here is a comparison with the old, non working receiver, it is smaller and I cut the edged.
I works well enough.
Hopefully this would be usefull for somebody.
I you have any questions, don't hesitate to ask.
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