Prerequisites
The following is a list of materials that you'll need to start coding on an Arduino; these can be purchased from your favorite electrical hobby store or simply ordered online:
- 1 x Arduino-compatible board such as the UNO
- 1 x USB cable A to B 1 x HC—SR04 ultrasound sensor
- 1 x I2C LCD1602
- 10 x male to male wires
- 9V battery with 2.1 mm barrel jack connector (optional)
- Laser pointer (optional)
Components such as the LCD panel and the ultrasonic sensor can be found in most electronic hobby stores. If they are unavailable in a store near you, you will find online stores that ship worldwide.