Arduino-cheatsheet/Schakelingen: verschil tussen versies
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Versie van 25 mei 2016 10:55
Schakelingen
Digitale input
| naam | schema | programma |
|---|---|---|
| Digitale output | 
|
void setup() {
pinMode(13, OUTPUT);
}
void loop() {
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(12, LOW);
delay(1000);
}
|
| Digitale input (met externe pulldown) |
|
void setup() {
pinMode(2, INPUT);
pinMode(13, OUTPUT);
}
void loop() {
int button = digitalRead(2);
digitalWrite(12, button);
}
|
| Digitale input (met interne pullup) |
|
void setup() {
pinMode(2, INPUT_PULLUP);
pinMode(13, OUTPUT);
}
void loop() {
int button = digitalRead(2);
digitalWrite(12, ! button);
}
|
| Analoge output (PWM) | 
|
int led = 9; // PWM pin
int ledState = 0;
void setup() {
}
void loop() {
analogWrite(led, ledState);
if (ledState < 256) {
ledState = ledState + 15;
} else {
ledState = 0;
}
delay(100);
}
|
| Analoge input | 
|
int led = 9; // PWM pin
int potmeter = A0;
int ledState = 0;
void setup() {
pinMode(led, OUTPUT);
}
void loop() {
ledState = analogRead(potmeter) / 4;
analogWrite(led, ledState);
}
|
| Seriële output |
USB-verbinding met host |
int count = 0;
void setup() {
Serial.begin(9600);
}
void loop() {
count = (count + 1) % 256;
Serial.print("count=");
Serial.println(count);
}
|
| Seriële input USB-verbinding met host |
|
int led = 9; // PWM pin
void setup() {
Serial.begin(9600);
while (! Serial()) {};
Serial.println("LED level (0..255)");
}
void loop() {
if (Serial.avaliable()) {
int ledState = Serial.parseInt();
if (ledState >=0 && ledState <= 255) {
analogWrite(led, ledState);
}
}
}
|
| Motor |
|
int motor = 9; // PWM pin
void setup() {
pinMode(motor, OUTPUT);
Serial.begin(9600);
while (! Serial);
Serial.println("Speed 0 to 255");
}
void loop() {
if (Serial.available()) {
int speed = Serial.parseInt();
if (speed >= 0 && speed <= 255) {
analogWrite(motor, speed);
}
}
}
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