Smart stick/smart gloves/smart shoes/blind help

stick

9V Battery Clip

Arduino Uno Rev3

Ultrasonic Sensor - HC-SR04 (Generic)

9V battery (generic)

Tape, Foam

Arduino IDE

Buzzer

Jumper wires (generic)

5 mm LED: Green

<pre ><code >const int trigPin = 10; const int echoPin = 9; const int buzzer = 12; const int ledPin = 13;// defines variableslong duration; int distance; int safetyDistance; void setup() { pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output pinMode(echoPin, INPUT); // Sets the echoPin as an Input pinMode(buzzer, OUTPUT); pinMode(ledPin, OUTPUT); Serial.begin(9600); // Starts the serial communication } void loop() {// Clears the trigPin digitalWrite(trigPin, LOW); delayMicroseconds(2);// Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH);// Calculating the distance distance= duration*0.034/2; safetyDistance = distance; if (safetyDistance <= 5) { digitalWrite(buzzer, HIGH); digitalWrite(ledPin, HIGH); } else{ digitalWrite(buzzer, LOW); digitalWrite(ledPin, LOW); }// Prints the distance on the Serial Monitor Serial.print("Distance: "); Serial.println(distance);} </code></pre>

diagram

Smart stick/smart gloves/smart shoes/blind help

Just of less cost and mass use