const int sensorPin = A0;
const float baslineTemp = 20.0;
void setup(){
**Serial.begin(9600); //open serial port
**for(int pinNumber = 2; pinNumber<5; pinNumber++){
****pinMode(pinNumber,OUTPUT);
****digitalWrite(pinNumber, LOW);
**}
*}
*void loop(){
*int sensorVal = analogRead(sensorPin);
*Serial.print("Sensor Value: ");
*Serial.print(sensorVal);
*// convert the ADC reading to voltage
*float voltage = (sensorVal/1024.0) * 5.0;
*Serial.print(", Volts: ");
*Serial.print(voltage);
*Serial.print(", degrees C: ");
*// convert the voltage to temperature in degrees
*float temperature = (voltage - .5) * 100;
*Serial.println(temperature);
*if(temperature < baselineTemp){
***digitalWrite(2, LOW);
***digitalWrite(3, LOW);
***digitalWrite(4, LOW);
*}else if(temperature >= baselineTemp+2 && temperature < baselineTemp+4){
***digitalWrite(2, HIGH);
***digitalWrite(3, LOW);
***digitalWrite(4, LOW);
*}else if(temperature >= baselineTemp+4 && temperature < baselineTemp+6){
***digitalWrite(2, HIGH);
***digitalWrite(3, HIGH);
***digitalWrite(4, LOW);
*}else if(temperature >= baselineTemp+6 && temperature < baselinetemp+8){
***digitalWrite(2, HIGH);
***digitalWrite(3, HIGH);
***digitalWrite(4, HIGH);
***}
***delay(1);
*}
En van alternatieven heb ik geen weet, maar die zullen er ook wel zijn en hopelijk open-source in het verlengde van de RPi.
.
. Bij Arduino kan je hier soms maanden tot een jaar op zitten wachten.