LPM Design: A Beginner's Guide

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.
 
  This example code is in the public domain.
 */
 
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup()
{                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);     
}

// the loop routine runs over and over again forever:
void loop()
{
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);               // wait for a second
}

void setup()
{
  // First, we'll start serial running at 9600 bits per second.
  Serial.begin(9600);
}

void loop()
{
  // We print a dummy value out, terminated by
  // the end-of-transmission character, a newline (\n)
  Serial.print("1234.5\n");
  
  // Now we wait a little bit so we don't overload Peregrine.
  delay(50);
}

void setup()
{
  // Again, we'll start by setting up the serial line.
  Serial.begin(9600);
}

// We need a variable to store our angle to calculate the sine of.
// It's a floating point decimal.
float angle = 0.0;
void loop()
{
  // Calculate a value
  float outputVal = 1000.0 + 500.0 * sin(angle);
  
  // Increment the angle for the next iteration of the loop function
  angle += 0.01;
  
  // Output the value over serial, letting Arduino handle output formatting
  Serial.print(outputVal);
  
  // Output a newline to denote the end of a transmission.
  Serial.print("\n");
  
  // Wait 50ms so as to not overload Peregrine.
  delay(50);
}

void setup()
{
  // Initialize serial
  Serial.begin(9600);
}

void loop()
{
  // Read from analog pin 0 and store the result
  // in an integer variable.
  int ADCVal = analogRead(0);

  // Let Arduino format and transmit the value
  Serial.print(ADCVal);
  
  // Send a newline to denote the end of the data packet.
  Serial.print("\n");
  
  // Wait so we don't overload the graphing software.
  delay(50);
}

void setup()
{
  // Initialize serial
  Serial.begin(9600);
}

void loop()
{
  // Read from analog pin 0 and store the result
  // in an integer variable.
  int ADCVal = analogRead(0);
  
  // Convert to a voltage
  float PowerVal = (ADCVal / 1023.0) * 5000.0;

  // Let Arduino format and transmit the value
  Serial.print(PowerVal);
  
  // Send a newline to denote the end of the data packet.
  Serial.print("\n");
  
  // Wait so we don't overload the graphing software.
  delay(50);
}

#include <LiquidCrystal.h>
#include <stdio.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

lcd.begin(16, 2);
lcd.setCursor(0, 0);
lcd.print("LPM Example Code");

char buf[17];
sprintf(buf, "ADC Value:  %4d", ADCVal);

lcd.setCursor(0, 1);
lcd.print(buf);

#include <LiquidCrystal.h>
#include <stdio.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup()
{
  Serial.begin(115200);
  pinMode(13, OUTPUT);
  digitalWrite(13, HIGH);
  
  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("LPM Example Code");
}

void loop()
{
  int ADCVal = analogRead(3);

  char buf[17];
  sprintf(buf, "ADC Value:  %4d", ADCVal);
  
  lcd.setCursor(0, 1);
  lcd.print(buf);
  
  Serial.print(ADCVal);
  Serial.print("\n");
  
  delay(50);
}

void loop()
{
  int ADCVal = analogRead(3);

  float Voltage = ( (float)ADCVal / 1023.0 ) * 5000.0;

  char buf[17];
  sprintf(buf, "Voltage:  %4dmV", (int)Voltage);
  
  lcd.setCursor(0, 1);
  lcd.print(buf);
  
  Serial.print(Voltage);
  Serial.print("\n");
  
  delay(50);
}

#include <LiquidCrystal.h>
#include <stdio.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup()
{
  Serial.begin(115200);
  pinMode(13, OUTPUT);
  digitalWrite(13, HIGH);
  
  lcd.begin(16, 2);
  
  lcd.setCursor(0, 0);
  lcd.print("LPM Example Code");
  lcd.setCursor(0, 1);
  lcd.print("       by Trevor");
  
  delay(1000);
  
  lcd.setCursor(0, 0);
  lcd.print("Power:       0mW");
  lcd.setCursor(0, 1);
  lcd.print("Peak:        0mW");
}

float PeakPower = 0.0;
float VoltsPerWatt = 1.0;

void loop()
{
  int ADCVal = analogRead(3);

  float Power = ( (float)ADCVal / 1023.0 ) * 5000.0 * VoltsPerWatt;

  char buf[17];
  sprintf(buf, "Power:    %4dmW", (int)Power);
  lcd.setCursor(0, 0);
  lcd.print(buf);
  
  if(Power > PeakPower)
  {
    sprintf(buf, "Peak:     %4dmW", (int)Power);
    lcd.setCursor(0, 1);
    lcd.print(buf);
    
    PeakPower = Power;
  }
  
  Serial.print(Power);
  Serial.print("\n");
  
  delay(50);
}