hi everyone my iris caught fire at weekend so was wandering what this is in picture and where can I get one from
That's the 4 in one esc.
There are replacement 4-in-1 escs that you can buy
I think it is this one: https://www.amazon.com/Robotics-APT-ASY-0011-Iris-Power-board-4-n-1...
I believe you may be better off buying a new one, With esc fire, other parts may be damaged too. hence your repair bill will exceed $500 4-in-1 esc board. the cost of the 4-in-1 esc is almost 80% of $599 new solo+gimbal bundle or 100% of $499 Phantom 3.. Both quad are better than iris.
This seems like a better price http://www.riseabove.com.au/iris-power-board
Contact Matt Hagen at https://www.facebook.com/matt.hagen.54. He has a lot of used IRIS and IRIS+ stuff for sale.