Making Touchpad With Ultrasonic Sensors | Arduino Interfaced With 2 Ultrasonic Sensor | Laptop Touch

This project is about getting the exact position of an object in a prescribed space. Then using those coordinates to operate other robots proportionally.

I got the inspiration to make this from the touchpad of the laptop. As the touchpad gives the location of the touch, similarly this system should give the coordinates of the finger/object in the area.

• Arduino UNO
• Ultrasonic Sensor - HC-SR04

Each ultrasonic sensor can detect an object placed in front of it & provide its distance. It has two ultrasonic sensors placed 90° to each other. They both provide the distance. The system acts like graph paper, where both the sensors are on the x & y-axis respectively. Thus providing the exact coordinate of the object/finger.

It requires two ultrasonic sensors. These sensors need to be interfaced with Arduino Uno.

The sensors must be 90° from one another. So we mounted them inside a cardboard box.

We used the battery as an object to be detected.

We were successfully getting the coordinates. It wasn't accurate because the sensors are not made for this.

Robotics EveryDay!!!