Last month one of my Eddy sensors was playing up so I took a better look and when taking off the shroud the magic smoke from the Eddy sensor escaped and took the toolhead mcu board with it.
It looks like some kind of filter in the sensor shorted and blew. I think it is a filter/pull-up kind of thing because the tracks also run under it to the chip.
Maybe caution to others to be careful with the plug and maybe cut some extra room out of the
shroud
I know we are all accustomed to working on our toolheads with the power on and the heater running… BUT messing with the eddy CURRENT wires with the eddy active should be avoided.
A momentary short across the coil would be BAD.
Just to make it clear, the coil is not separate but part of the pcb.
It seems only the power supply voltage (3,3v and gnd) and i2c is connected via the wires to the extra_mcu in the toolhead.
FWIW, the datasheet is available LDC1612 data sheet, product information and support | TI.com
Also, Application Note http://www.ti.com/lit/snoa930 LDC Sensor Design might come in handy for those wishing to study the circuit.
