So am now back to "round off"
And to apologise for consuming the time and efforts of all those who contributed .
It did turn our that my relay board was a wrong un, So I wasted a lot of my time and effort trying to make it work (and a lot of time and effort from you guys trying to resolve my problems )
One problem was that as with all stuff from Ebay the instuctions are non existent .
It took quite a bit of research to discover that this board ( while having an input requirement of 5-24 v ) needed a 12v input , a minimum of 9v so was just not going to respond to a 5v pin signal from a parallel port .
And all these boards look the same , so with the absence of instructions it is easy to be mis-led
All was not lost though.. The advice on the Hal formats to permit the correct signals to be created at the pins (and inverted ) has been invaluable .
I have moved another couple of steps forward with front and back tools , and got spindle reversing working , so without adding a turret I am reaching the limits of the capabilities of this machine . Need to play now and make some components and some chips
Thanks again guys !
