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I will update this with more detail shortly but for now a full bill of materials and a build guide can be found on my blog at http://andrewtaylor.net.au/2016/03/26/215-hopper-build/
It has been brought to my attention that the original brd file that I upload had a fault on the vbat connector. The ground trace from said connector did not reach the main ground plane. Now uploaded is revision 2 of the board with this problem corrected.
My apologies to anyone who has already made the board. You will still be able to fly with it but you will need to forgo the connector for vbat and connect wires directly to the same pads as the battery leads (mind the polarity), or leave them off all together (mind you don't over discharge your batteries). I have ordered a new batch myself so if anyone has already made boards and would like a corrected replacement get in touch.