You want to use a photo resistor connected to an analog port of the Arduino development board as a sensor, and the following measurements have been made in an open circuit: The resistance of the photocell measures 10 KΩ when there is no light incident on it. The resistance of the photocell measures 2KΩ, when the light of a sunny day in Bogotá affects this. How much should the value of R2 be so that the voltage between the Analog input A0 and ground (GND) is equal to 2.5 V, in the condition of No incidence of any light on the surface of the photocell
You want to use a photo resistor connected to an analog port of the Arduino development board as a sensor, and the following measurements have been made in an open circuit: The resistance of the photocell measures 10 KΩ when there is no light incident on it. The resistance of the photocell measures 2KΩ, when the light of a sunny day in Bogotá affects this. How much should the value of R2 be so that the voltage between the Analog input A0 and ground (GND) is equal to 2.5 V, in the condition of No incidence of any light on the surface of the photocell
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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You want to use a photo resistor connected to an analog port of the Arduino development board as a sensor, and the following measurements have been made in an open circuit:
The resistance of the photocell measures 10 KΩ when there is no light incident on it.
The resistance of the photocell measures 2KΩ, when the light of a sunny day in Bogotá affects this.
How much should the value of R2 be so that the voltage between the Analog input A0 and ground (GND) is equal to 2.5 V, in the condition of No incidence of any light on the surface of the photocell
Transcribed Image Text:O 5V
Photocell
A0
Fixed
Resistor
R2
O GND
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