This training session covers the technical details of the simple, yet ultra-low power LC-sensing solution with CC1350 wireless MCU and external TI Analog parts - the FemtoFET CSD2328x family. In TIDA-01228 a new hardware and software design with PMOS FET and LC-tank circuitry is presented, which is able to count the rotations of a half-metal/half non-metal disc, found in mechanical water meters.