The Rain Sensor is a product developed for several automations purposes, like industrial control, smart houses or any kind of project that requires this function. The main idea here is to use a sensor that detects the presence of rain, sending the data to your circuit, even if your sensor is at a distant.
The connection of the sensor is accomplished through the digital pin.
This is a direct drive 4WD robot kit that uses Nexus mecanum wheels. The mecanum wheels allow it to vector in any direction.
3D Scanning Range Finder. The distance is measured by steering the laser beam vertically and horizontally.