WYPH Ultrasonic Module HC-SR04 Distance Measuring Ranging Sensor for Arduino UNO for Mega R3 Duemilanove Nano Robot Pack of 10pcs sold2025 The projector supports two-way Bluetooth

The projector supports two-way Bluetooth 5

electronic sentinel

fireworks mode

or everyday life

but also supports listening and speaking

WYPH Ultrasonic Module HC-SR04 Distance Measuring Ranging Sensor for Arduino UNO for Mega R3 Duemilanove Nano Robot Pack of 10pcs sold2025 The projector supports two-way BluetoothWYPH Ultrasonic Module HC SR04 Distance Measuring Ranging Sensor for Arduino UNO for Mega R3 Duemilanove Nano Robot Pack of 10pcs There are 4 pins out of the module: VCC , Trig, Echo, GND. So it's a very easy interface for controller to use it ranging. The all process is: pull the Trig pin to high level for more than 10us impulse, the module start ranging; Finish ranging, If you find an object in front, Echo pin will be high level, and based on the