Systems and assemblies associated with a flexible printed circuit board with coils printed thereon for indicating position of a movable member

A valve comprising:

• a housing;
• a plurality of ports comprising:
• a first port and a second port;
• a poppet that is movable relative to the housing;
• a spring applying a spring force on the poppet;
• a movable member disposed within the housing and coupled to the poppet;
• and
• a coil flexible printed circuit board (FPCB) wrapped around the housing, wherein the coil FPCB comprises:
• (i) at least one excitation coil printed on the coil FPCB as a conductive track, wherein the at least one excitation coil is configured to generate a magnetic field when an electric current is provided through the conductive track, and (ii) at least one sensing coil printed on the coil FPCB as a respective conductive track, wherein the magnetic field generated by the at least one excitation coil is configured to induce a respective electric current in the at least one sensing coil,
• wherein fluid provided to the first port pushes the poppet against the spring, thereby opening a flow path between the first port and the second port, wherein movement of the movable member with the poppet within the housing changes a parameter associated with the respective electric current, thereby indicating a position of the movable member and the poppet.