If you use your own firmware based on Marlin 1.1.8C, you can implement our IR sensor through the following code changes:
(The number before the code is the line specification, which does not necessarily have to match exactly)
Configuration.h
// Mechanical endstop with COM to ground and NC to Signal uses "false"
517 #define Z_MIN_ENDSTOP_INVERTING false
// @section probes
649 #define FIX_MOUNTED_PROBE
// Z Probe to nozzle (X,Y) offset, relative to (0, 0).
706 #define X_PROBE_OFFSET_FROM_EXTRUDER 6
707 #define Y_PROBE_OFFSET_FROM_EXTRUDER -39
708 #define Z_PROBE_OFFSET_FROM_EXTRUDER -0.50
// X and Y axis travel speed (mm/m) between probes
711 #define XY_PROBE_SPEED 7000
// Speed for the "accurate" probe of each point
717 #define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 1)
// The number of probes to perform at each point.
722 #define MULTIPLE_PROBING 3
// @section calibrate
894 #define AUTO_BED_LEVELING_BILINEAR
// Set the number of grid points per dimension.
933 #define GRID_MAX_POINTS_X 5
// Set the boundaries for probing (where the probe can reach).
937 #define LEFT_PROBE_BED_POSITION 23
938 #define RIGHT_PROBE_BED_POSITION 280
939 #define FRONT_PROBE_BED_POSITION 16
940 #define BACK_PROBE_BED_POSITION 266
Configuration_adv.h
// Enable to combine M851 and Babystepping
663 #define BABYSTEP_ZPROBE_OFFSET