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 4WD IG42 single bearing platform that is setup for outdoor navigation/positioning. A full array of sensor options including an IMU, motor encoders, and a Garmin 18x GPS that can provide position feedback with up to 3 meter accuracy.
2WD self balancing robot! This kit is a perfect plataform for learning Arduino, PID control, serial communications(Serial, I2C, SPI), PWM signals, IMU filtering, etc.