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For the coil, just wind the coper wire till the coil is full (approx 140m).
Start by passing the wire on the small hole on the side of the coil (leave enough length out to be able to make the connection).
Then wind the wire as regularly as possible till there is no more room. (I've used a hand drill at very low speed)
Use some tape to hold the wire in place.
I've soldered a 2 pins male JST connector that I've glued on top of the coil for easier connection with the board.
Hope this helps.
I know I should write full instructions. I'll do when I have more time ;-)