cloverplus V2 additions .. inductive sensor and streamlined carriage with optical

I expanded my cloverplus .. now running a 150mm dia milled steel plate with a 100mm oil tank heater under it , insulated from the frame by floor foam cut to shape , the spring of the foam pushes the thermistor nicely against the heat mat and firmly against the underside of the steel bed .. i get to heat in 10 mins tops .. much less with the aid of a hairdryer !!!!

The inductive sensor loves the steel .... and the optical endstops are perfect every time.
I ran the inductive through a relay .