The Flow breakout board is used for motion tracking and can easily be connected to any robotics project or other design.
The motion of a surface, usually the ground, is measured and is reported as delta X, delta Y by the optical flow sensor. The Z absolute distance is measured by the Time of Flight ranging sensor. It comes with an Arduino library to easily read the movement data and has a large voltage range for IO and power supply.
The Flow breakout features the VL53L0x ToF sensor and the PMW3901 optical flow sensor.