Motion Controlled Ultrasonic Lamp using Arduino

Alright, let’s start connecting the hardware first. We’re going to be using three ultrasonic sensors. They’ll be used to detect swipe left, swipe right, and forward and back movement. Depending on what type of utrasonic sensor you have, you may have a different ammount of pins. Mine has 5, but we’ll only be using four. You want to connect a ground port on the Arduino to the negative row on the breadboard and the 5v port to the positive row on the breadboard.

Now you can now connect the ground pins of the sensors to the ground row, and the VCC pins to the positive row. On the left sensor connect the Trig pin to port 8, and the echo to port 9. For the center sensor, trig goes to 10 and echo goes to 11. And for the right sensor, trig goes to 12 and echo goes to 13.

Using a separate breadboard, let’s connect the servos. Start by connecting both ground wires together and both power wires together. Then connect a power supply to the motors. But you have to make sure you also connect the ground to a ground on the Arduino. Eventually this power supply will power both of the motors as well as the Arduino. Now connect one servo to port 6 on the Arduino and the other one to port 7. Then connect the Arduino up to your computer and let’s start writing code!

Step 3: Writing the Arduino Code

When you have everything connected up the next step is to plug the Arduino into your computer and start writing code for it. You can download the code or copy and paste from below, but before you can run it, you will need to download the NewPing Arduino library and unzip it to your Arduino Libraries folder.

DOWNLOAD ARDUINO CODE

/*BEGIN ARDUINO CODE*/

/*IMPORT NECESSARY LIBRARIES*/<br>#include  //Import the "NewPing" library for the Ultrasonic Sensors
#include  //Import the server library

/*DECLARE ALL VARIABLES*/

int slide = 0; //Slide detector variable

boolean left=false; //Left true/false variable
boolean center=false; //Center true/false variable
boolean right=true; //Right true/false varialbe

#define leftTrig 8 //left sensor output Arduino pin
#define leftEcho 9 //left sensor input Arduino pin
#define centerTrig 10 //center sensor output Arduino pin
#define centerEcho 11 // center sensor input Arduino pin
#define rightTrig 12 //right sensor output Arduino pin
#define rightEcho 13 //right sensor input Arduino pin

Servo servoRotate; //Servo that will rotate the lamp
Servo servoUpDown; //Servo that will move the lamp up/down

int servoRotatePin = 4; //Rotational servo Arduino pin
int servoUpDownPin = 5;//Vertical servo Arduino pin

const int maxD = 20; //cm; maximum distance

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