One way to accomplish this involves four HC-SR04 ultrasonic sensor units that transmit data through an Arduino into a Linux computer. The end result is a virtual touchscreen that can be made at home.

Our kit includes the Maker Uno RP2040 itself, four Grove to jumper cables, a USB-A to USB-C cable, a soil moisture sensor with one Grove cable, an HC-SR04 ultrasonic sensor with a Grove cable, a SG90 ...

which makes this project of ours super important, because in this project we are going to interface a HC-SR04 Ultrasonic Distance Sensor module with ESP32 and we are going to know every little detail ...

So here is an auto-dispenser that uses ultrasonic sensing instead to dispense the sanitiser. The dispenser uses ultrasonic sensor HC-SR04 to detect hands when these are put beneath the container. It ...

Experimental data on the free fall of a plastic box through the air was gathered with the help of an ultrasonic distance sensor (HC-SR04). Readings were taken at different intervals during the fall to ...

Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...

HC-SR04 ultrasonic distance measures sensor for distance measurement. Bluetooth module HC-05 is the wireless control module of the lamp. Then the interface circuit design of each functional module is ...

I’m sure you have at some point played with the HC-SR04 Ultrasonic sensor modules. Shifting to the new waterproof ultrasonic sensor is not a big deal, since it’s pretty easy to modify some example ...

However, sensors such as the depth cameras and LIDARS are often very expensive and difficult to obtain in Bangladesh. To circumvent this problem researchers in Bangladesh uses HC-SR04, a low-cost ...