Description: Below are four examples of blue and red leds flashing in different police light patterns with the Nerdonic Exen Mini.
Supplies:
1 – Breadboard 400 Points
1 – Nerdonic Exen Mini
8 – LED (Four Blue, Four Red)
1 – 220 Ohm Resistor
Arduino Code (Example 1):
#define led1 A1
#define led2 A2
#define led3 A3
#define led4 A4
#define led5 SCL
#define led6 SDA
#define led7 0
#define led8 1
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
}
void loop() {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
delay(150);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
delay(100);
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
delay(150);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
delay(150);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
delay(100);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
delay(150);
}
Arduino Code (Example #2):
#define led1 A1
#define led2 A2
#define led3 A3
#define led4 A4
#define led5 SCL
#define led6 SDA
#define led7 0
#define led8 1
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
}
void loop() {
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
delay(150);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
delay(150);
digitalWrite(led2, LOW);
digitalWrite(led3, HIGH);
delay(150);
digitalWrite(led3, LOW);
digitalWrite(led4, HIGH);
delay(150);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
delay(150);
digitalWrite(led5, LOW);
digitalWrite(led6, HIGH);
delay(150);
digitalWrite(led6, LOW);
digitalWrite(led7, HIGH);
delay(150);
digitalWrite(led7, LOW);
digitalWrite(led8, HIGH);
delay(150);
}
Arduino Code (Example #3):
#define led1 A1
#define led2 A2
#define led3 A3
#define led4 A4
#define led5 SCL
#define led6 SDA
#define led7 0
#define led8 1
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
}
void loop() {
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
delay(500);
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
delay(500);
}
Arduino Code (Example #4):
#define led1 A1
#define led2 A2
#define led3 A3
#define led4 A4
#define led5 SCL
#define led6 SDA
#define led7 0
#define led8 1
void setup() {
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
}
void loop() {
// Flash blue lights 3 times
for (int a=1; a<=3; a++) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
delay(75);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
delay(40);
}
delay(80);
// Flash red lights 3 times
for (int a=1; a<=3; a++) {
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
delay(75);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
delay(40);
}
delay(80);
}