here you go
http://www.amadeal.co.uk/http://emvioeng.com/got mine ESS from the latter
but note you will still need a BOB or two maybe three as the ESS has three PP 26 pin headers to connect to the BOB
and to qualify my info I did have a Far Eastern motion controller but I built a 3d probe it got smashed researched the problem put it in the square black thing that sits outside the house got the ESS rewired the mill ( 4 axis ) to get rid of the hidden resistors that they had put in the wiring now it works as it should inc. G31 G31.1 G31.2 and G31.3
so 4 axis and 9 proximity limit switches completes the mill
Stuart central UK
both are ok to deal with but disclaimer I am only a customer and have no ties with either