NWT KA3

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Analoger Eingang

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luhkziz

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1

Analoger Eingang

analogRead(analog pin); //liest die Ausgabe

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2

Sensoren

= Widerstände, deren Widerstandswert sich verändert, wenn sich die entsprechende Größe ändert → z.B. LDR (Lichtsensor) = Widerstandswert ändert sich, nachdem es hell oder dunkel ist

-Da Arduino keine Widerstände messen kann, brauchen wir Spannungsteilerstromkreis

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3

Berechnen in Arduino(Sensoren):

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4

Bsp. Lichtsensorprogramm, wenn Wert unter 300 LED geht an: 

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5

Poti

= Potentiometer, ist ein Widerstand, dessen Widerstandswert 

sich stufenlos einstellen kann. Über den Widerstandskörper

wird eine Schleife geführt, deren Position auf den Körper den 

bestimmten Widerstandswert einstellt

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6

Bsp. Potiprogramm, wo Wert von Poti im seriellen Monitor gezeigt wird:

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7

Servos

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8

Energie 2 (Kennlinien)

roter Punkt (Leistung = 0): Drehzahl 6, Drehmoment 0 = Leerlaufgeschwindigkeit (Leerlaufspannung)

lila Punkt: Leistung ist am größten = Maximum-Power-Point (MPP)

gelber Punkt (Leistung = 0): Drehzahl 0, Drehmoment 3 = Stillstandskraft (Kurzschlussstrom)


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9

Schaltungen 3 (Berechnung von Kennlinien)

U = R · I

P = U · I 


Reihenschaltung: Iges = I1 = I2 = … ; Uges = U1 + U2 + …


Parallelschaltung: Iges + I1 + I2 + … ; Uges = U1 = U2 = …

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