BID at Universität Potsdam | Flashcards & Summaries

Lernmaterialien für BID an der Universität Potsdam

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen BID Kurs an der Universität Potsdam zu.

TESTE DEIN WISSEN
Which leg of an LED is +? In which direction does voltage flow?
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TESTE DEIN WISSEN
- long leg is + - voltage flow + --> -
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TESTE DEIN WISSEN
How to write a PWM wave to a pin? What do you use this functionality for ?
Lösung anzeigen
TESTE DEIN WISSEN
analogWrite( pin_number, value); value: [0;255] specifies % of voltage - use it to light a LED at varying brightnesses or drive a motor at various speeds - ends with the next call to analogWrite(), digitalRead() or digitalWrite() on same pin. - freq approx. 490Hz on Pins - those pins do not support digitalWrite()
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TESTE DEIN WISSEN
Which pins on an arduino are input and output?
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TESTE DEIN WISSEN
- digital pins
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TESTE DEIN WISSEN
What does digitalRead(pin_number) return?
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TESTE DEIN WISSEN
returns 0 if voltage < 3V returns 1 if voltage > 3V
Lösung ausblenden
TESTE DEIN WISSEN
What does analogRead(pin_number) return? On which pins can you call it?
Lösung anzeigen
TESTE DEIN WISSEN
returns 0 if voltage = 0V returns 1023 if voltage = 5V - any value in between - only on analog pins (which are input only)
Lösung ausblenden
TESTE DEIN WISSEN
Which voltages can damage the board?
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TESTE DEIN WISSEN
5V connected to pins that are not VIN
Lösung ausblenden
TESTE DEIN WISSEN
How to improve a pressure sensor made with conductive foam?
Lösung anzeigen
TESTE DEIN WISSEN
- increase the contact area between wire and foam - add casing for controlled pressure
Lösung ausblenden
TESTE DEIN WISSEN
Why can electrodes kill?
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TESTE DEIN WISSEN
- increase contact area to skin - decrease resistance
Lösung ausblenden
TESTE DEIN WISSEN
What is Ohms law?
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TESTE DEIN WISSEN
Voltage = Current * Resistance
Lösung ausblenden
TESTE DEIN WISSEN
How can you make a knob?
Lösung anzeigen
TESTE DEIN WISSEN
Configure a potentiometer as a voltage divider.
Lösung ausblenden
TESTE DEIN WISSEN
How to make a dimmer work/ how to not make it work?
Lösung anzeigen
TESTE DEIN WISSEN
make it work: pulse width modulation do not make it work: voltage divider -> energy gets lost at resistor (which in turn gets super hot)
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TESTE DEIN WISSEN
Was ist ein microcontroller ?
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TESTE DEIN WISSEN
- designed for embedded applications - small computer on a single integrate circuit containing - a processor core, memory, and programmable input/output peripherals
Lösung ausblenden
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Beispielhafte Karteikarten für deinen BID Kurs an der Universität Potsdam - von Kommilitonen auf StudySmarter erstellt!

Q:
Which leg of an LED is +? In which direction does voltage flow?
A:
- long leg is + - voltage flow + --> -
Q:
How to write a PWM wave to a pin? What do you use this functionality for ?
A:
analogWrite( pin_number, value); value: [0;255] specifies % of voltage - use it to light a LED at varying brightnesses or drive a motor at various speeds - ends with the next call to analogWrite(), digitalRead() or digitalWrite() on same pin. - freq approx. 490Hz on Pins - those pins do not support digitalWrite()
Q:
Which pins on an arduino are input and output?
A:
- digital pins
Q:
What does digitalRead(pin_number) return?
A:
returns 0 if voltage < 3V returns 1 if voltage > 3V
Q:
What does analogRead(pin_number) return? On which pins can you call it?
A:
returns 0 if voltage = 0V returns 1023 if voltage = 5V - any value in between - only on analog pins (which are input only)
Mehr Karteikarten anzeigen
Q:
Which voltages can damage the board?
A:
5V connected to pins that are not VIN
Q:
How to improve a pressure sensor made with conductive foam?
A:
- increase the contact area between wire and foam - add casing for controlled pressure
Q:
Why can electrodes kill?
A:
- increase contact area to skin - decrease resistance
Q:
What is Ohms law?
A:
Voltage = Current * Resistance
Q:
How can you make a knob?
A:
Configure a potentiometer as a voltage divider.
Q:
How to make a dimmer work/ how to not make it work?
A:
make it work: pulse width modulation do not make it work: voltage divider -> energy gets lost at resistor (which in turn gets super hot)
Q:
Was ist ein microcontroller ?
A:
- designed for embedded applications - small computer on a single integrate circuit containing - a processor core, memory, and programmable input/output peripherals
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