#include <LiquidCrystal.h> #define REV 0 #define SPD 1 #define CAL 2 #define RPM 3 #define DIS 4 #define JOG 5 LiquidCrystal lcd(12, 11, 10, 9, 8, 7); // Here come the pins const char revPin = 2; // the number of the revolution pin const char ledPin = 13; // the number of the LED pin const char modePin = 3; // the number of the mode change pin const char unitsPin = 4; // the number of the units pin // Here come the calculation variables volatile unsigned int revolutions = 0; // the number of revolutions (volatile for interrupt reasons) volatile unsigned long lastmillis; // the last number of millis since the revolution, comrade! volatile float rpm; // revolutions per minute (should be able to be calculated from lastmillis and the current millis) volatile float calories; // how many calories were burned (this should be a constant with every revolution) volatile float kmh; // how many kilometers per hour volatile float mph; // how many miles per hour volatile float miles; volatile float kilometers; // Here come the states unsigned char state = REV; // This is the actual state of the device boolean printedState = 0; // This tells whether the units were printed or not... unsigned char secondaryState = REV; // These are the states for the jog mode... use them wisely. unsigned long lastStateChange = 0; // Here are the unit variables boolean units = 1; // These are the unit states boolean lastunits = 1; // This is the last state of the units button boolean unitsOn = 1; // Here are the mode variables boolean lastmode = 1; boolean modeOn = 1; boolean modeMove = 0; boolean secondaryModeMove = 0; unsigned long secondaryModeMillis = 0; void setup() { lcd.begin(20,2); lcd.print("Initiating bike..."); lcd.setCursor(0, 1); lcd.print("nodnarb.dyndns.org"); // initialize the LED pin as an output: pinMode(ledPin, OUTPUT); // initialize the pushbuttons as an input: pinMode(revPin, INPUT_PULLUP); pinMode(modePin, INPUT_PULLUP); pinMode(unitsPin, INPUT_PULLUP); Serial.begin(9600); attachInterrupt(2, incRevolutions, RISING); } void loop(){ // Here's stuff controlling the mode pin modeOn = digitalRead(modePin); if ((modeOn != lastmode) && !modeOn) { modeMove = 1; } lastmode = modeOn; // Here's stuff controlling the units pin unitsOn = digitalRead(unitsPin); // Read the units if ((unitsOn != lastunits) && !unitsOn) { units++; printedState = 0; } lastunits = unitsOn; switch (state) { case REV: if (!printedState) { lcd.setCursor(0,0); lcd.print("Revolutions:"); lcd.setCursor(0,1); } lcd.print(revolutions); if (modeMove) { state = SPD; modeMoveReset(); } break; case SPD: if (!printedState) { lcd.setCursor(0,0); if (units) { lcd.print("Speed (in km/h):"); } else { lcd.print("Speed (in MPH):"); } lcd.setCursor(0,1); } printSpeed(); if (modeMove) { state = CAL; modeMoveReset(); } break; case CAL: if (!printedState) { lcd.setCursor(0,0); lcd.print("Calories consumed:"); lcd.setCursor(0,1); } if (modeMove) { state = RPM; modeMoveReset(); } break; case RPM: if (!printedState) { lcd.setCursor(0,0); lcd.print("RPM:"); lcd.setCursor(0,1); } if (modeMove) { state = DIS; modeMoveReset(); } break; case DIS: if (!printedState) { lcd.setCursor(0,0); printDistance(); lcd.setCursor(0,1); } if (units) { lcd.print(miles); } else { lcd.print(kilometers); } if (modeMove) { state = JOG; modeMoveReset(); } break; case JOG: if ((millis() - secondaryModeMillis) >= 500) { secondaryModeMove = 1; secondaryModeMillis = millis(); } switch (secondaryState){ case REV: if (!printedState) { lcd.setCursor(0,0); lcd.print("Jog (revs.):"); lcd.setCursor(0,1); } lcd.print(revolutions); if (secondaryModeMove) { secondaryState = SPD; secondaryModeMoveReset(); } break; case SPD: if (!printedState) { lcd.setCursor(0,0); if (units) { lcd.print("Jog (km/h):"); } else { lcd.print("Jog (MPH):"); } lcd.setCursor(0,1); } printSpeed(); if (secondaryModeMove) { secondaryState = CAL; secondaryModeMoveReset(); } break; case CAL: if (!printedState) { lcd.setCursor(0,0); lcd.print("Jog (cals.):"); lcd.setCursor(0,1); } lcd.print(calories); if (secondaryModeMove) { secondaryState = RPM; secondaryModeMoveReset(); } break; case RPM: if (!printedState) { lcd.setCursor(0,0); lcd.print("Jog (rpm.):"); lcd.setCursor(0,1); } lcd.print(rpm); if (secondaryModeMove) { secondaryState = DIS; secondaryModeMoveReset(); } break; case DIS: if (!printedState) { lcd.setCursor(0,0); if (units) { lcd.print("Jog (km):"); } else { lcd.print("Jog (miles):"); } lcd.setCursor(0,1); } printDistance(); if (modeMove) { secondaryState = REV; secondaryModeMoveReset(); } break; default: secondaryState = REV; break; } if (modeMove) { state = REV; modeMoveReset(); } break; default: state = REV; break; } if (digitalRead(revPin)) { // turn LED on: digitalWrite(ledPin, HIGH); } else { // turn LED off: digitalWrite(ledPin, LOW); } } void incRevolutions () { revolutions++; rpm = 60000.0 / ( millis() - lastmillis ); mph = rpm / 4.8; kmh = rpm / 3.0; miles += 1.0 / 288.0; kilometers += 1.0 / 180.0; calories += 10.0 / (millis() - lastmillis); lastmillis = millis(); printInformation; } void printInformation () { Serial.print("Revolutions: "); Serial.println(revolutions); Serial.print("RPM: "); Serial.println(rpm); Serial.print("MPH: "); Serial.println(mph); Serial.print("km/h: "); Serial.println(kmh); Serial.print("Miles: "); Serial.println(miles); Serial.print("Kilometers: "); Serial.println(kilometers); Serial.print("Calories: "); Serial.println(calories); Serial.print("Time Since Last Revolution: "); Serial.println(millis() - lastmillis); } void modeMoveReset () { modeMove = 0; printedState = 0; } void printSpeed () { if (units) { lcd.print(kmh); } else { lcd.print(mph); } } void printDistance () { if (units) { lcd.print("Distance (km):"); } else { lcd.print("Distance (miles):"); } } void secondaryModeMoveReset () { secondaryModeMove = 0; printedState = 0; }
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