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EE47 - Lab 4

Page history last edited by Tyler Ahlf 11 years, 8 months ago

a. Based on the readings from the serial monitor, what is the range of the analog values being read?

0 - 1023

✔

b. How many bits of resolution does the analog to digital converter (ADC) on the Atmega32U4 have (hint: where might you look to find this sort of thing)? How many are you using with the range of values you're seeing?

?? Check the datasheet if in doubt...

a. Include your accelerometer read-out code in your write-up.

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int xpin = A3;                  // x-axis of the accelerometer
const int ypin = A2;                  // y-axis
const int zpin = A1;                  // z-axis (only on 3-axis models)

void setup() {
lcd.begin(16, 2);
// initialize the serial communications:
Serial.begin(9600);
}

void loop() {
// print the sensor values:
lcd.setCursor(0,1);
lcd.print(analogRead(xpin));
lcd.setCursor(7,1);
lcd.print(analogRead(ypin));
lcd.setCursor(13,1);
lcd.print(analogRead(zpin));
//print x,y,z
lcd.setCursor(1,0);
lcd.print("X");
lcd.setCursor(8,0);
lcd.print("Y");
lcd.setCursor(14,0);
lcd.print("Z");
lcd.println();
// delay before next reading:
delay(100);
}