Right then, this might be a long post but I hope some of its useful.......

My large original images can be found here with the password "Jollatides":

http://smg.photobucket.com/user/grimtech/library/Jolla


After reading the excellent post by "Rainisto" at Maemo.org http://talk.maemo.org/showthread.php?t=92059

I wanted to get wireless charging working on my Jolla too!

I purchased a wireless charger:
http://www.ebay.co.uk/itm/350951744680?var=620206347247&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#sthash.YRVbUkku.dpuf

and wireless S4 receiver:
http://www.ebay.co.uk/itm/231108160457?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#sthash.YRVbUkku.dpuf


First of all I tested the receivers output voltage when placed on the pad:


Which showed a nice 5.33 Volts

Next job was finding the thinnest wires to connect the receiver to the Jolla power pins. I found the twisty ties used to tie up cables were the thinnest I had around, and the plastic cover helped guide the wires as well:

"

Before beginning I tried just the receiver sat on top of the Jolla battery and when re-fitting the other half it made the back bulge due to the thickness, and also due to the receiver being so wide from left to right:

"

I wanted my Other Half to have the least amount of bulge possible.
Whilst thinking about this problem, I set about making the wires.

First I bent the wire into tiny loops:
"

Here is the cable loop showing the its size compared to the contacts on the receiver :




I then filled the loops with solder to make flat "pads":
"

To keep the setup as thin as possible I removed the contacts from the receiver by de-soldering them:

"



After each step I put the receiver back on the pad to make sure it was still working and the voltage was still the same and nothing had gone wrong.

Next I read more about the receivers, and realized that they could be cut down without damaging the coil etc, and I took a peak inside to see how much space was around the receiver circuit:



The cut down receiver allowed it to be rotated and permit the reciever circuit to sit in the space below the Micro SD card.



The pads I made to contact the phones power pins I sat on a tiny piece of double sided foam:




The finished thing looks like this:



I put the Other Half on to the charging pad and measured the voltage again and it was still 5.3V
Now the time to fit the other half to the phone!
I did this and found a ting bulge in the middle at the top, so I removed a tiny part of the "shelf" molded into the other half that sits under the micro SD card. I also noted that the Jolla power pins were making great contact as I could see marks they had made in my soldered pads.

So time to put it back together again and try it out.

:(

When placing the re-assembled phone on to the charging pad, the blue LED that had previously come on as in the first image (and start the multi-meter showing the 5.3V) now started to flash and alternate green and blue. The charging pad comes with no instructions telling me what this means.
The phone does not show as charging.

As soon as I take the Other Half off the phone and put it on the pad, the blue light comes on and I can measure 5.3V !!!
I have tried powering the pad with many wall adapters from 500mA upto 1600mA and the same thing happens.
The receiver is rated as 600mA.
Yes I believe I do have my pads the correct way round for the +ve and -ve power pins on the phone.

My gut feeling is the cheap charging pad is the fault, and I am waiting to take my phone to a friend who has genuine Nokia charging pads to see if this helps...

Any advice would be great!?!?

Hopefully these images etc should help others make a charging Other Half.

I just cant work out why mine wont work when installed on the phone and laid on to the pad.