Connect 9 MR sensors and calibrate existing PCB / mainboard(repost)

Connect? MR sensors and calibrate existing PCB / mainboard - a fully functional PCB / mainboard exists, this will be shipped to coder - The PCB is used for measuring the distance between the permanent magnets and the MR Sensors 1. Tasks for coder: - define suitable Magnetoresistive Sensors - buy MR Sensors and permanent magnets - connect 9 magnet sensors in hardware to the board - calibrate the sensors 2. General - all additional costs (for sensors & shipping) will be covered separatley - further details (layout plans etc) on request