ATmega Alien thema-gokautomaat

Code

• SlotMachine.ino
• SlotMachine.h
• slotCreditsDisplaySlave.ino

SlotMachine.inoArduino

/*SlotMachine.ino Version:1.0 Date:2018/07/01 - 2018/08/29 Device:ATMega328P-PU @ 16mHz Language:C Purpose =======A slot machine for entertainment and educational purposes only, with the following features:- AtMega328P microcontroller running at 16mHz - Custom I2C seven segment display for displaying credit balance, also built with an ATMega328P running at 16mHz. That program is supplied in a seperate file. - Three 8x8 LED matricies for displaying symbols driven by MAX7219. - I2C LCD display 20x4, to show menus - various buzzers, buttons and an RGB LED. - the ability to update various settings via the LCD menu to influence the machine's behavior. - the ability to change the amount of the wager. Known Defects =============- Sometimes one or two of the reels won't spin, not really a defect. - crash as soon as payed out exceeds 1,000,000. TODO ====- add brown out detection - add watch dog protection (wdt_enable(value), wdt_reset(), WDTO_1S, WDTO_250MS) Warnings ========- Beware of turning on too much debugging, it's easy to use all of the data memory, and in general this makes the microcontroller unstable. - Gambling is a tax on people who are bad at math. This is for entertainment only. It was the intent of the author to program this game to return ~%hold of every wager to the house, similar to many slot machines. - Why not control the LED that displays the credits with the LedControl library? I tried that and couldn't get more than one LedControl object to work at a time. So I had to create an I2C slave instead and use another AVR. Suggestions ===========- Best viewed in an editor w/ 160 columns, most comments are at column 80 - Please submit defects you find so I can improve the quality of the program and learn more about embedded programming. Author ======- Copyright 2018, Daniel Murphy  - Contributors:Source code has been pulled from all over the internet, it would be impossible for me to cite all contributors. Special thanks to Elliott Williams for his essential book "Make:AVR Programming", which is highly recommended. Thanks also to Cory Potter, who gave me the idea to do this. License =======Daniel J. Murphy hereby disclaims all copyright interest in this program written by Daniel J. Murphy. This program is free software:you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; zonder zelfs de impliciete garantie van VERKOOPBAARHEID of GESCHIKTHEID VOOR EEN BEPAALD DOEL. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Libraries =========- https://github.com/wayoda/LedControl - https://bitbucket.org/teckel12/arduino-timer-free-tone/wiki/Home - https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library - https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home The Program ===========- Includes */#include #include #include  // for the abs function#include "LedControl.h" // https://github.com/wayoda/LedControl#include "SlotMachine.h"#include  // https://bitbucket.org/teckel12/arduino-timer-free-tone/wiki/Home#include #include  // https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home#include  // https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library//- Payout Table/* Probabilities based on a 1 credit wager Three spaceships:1 / (25 * 25 * 25) =0.000064 Any three symbols:24 / 15625 =0.001536 Two spaceships:(24 * 3) / 15625 =0.004608 One spaceship:(24 * 24 * 3)/ 15625 =0.110592 Tw o symbols match:(23 * 3 * 24) / 15625 =0.105984 House win, 1 minus sum of all probabilities =0.777216 _ Use the spreadsheet to work out the payout table remembering to keep the volatility resonable i.e. <20. P R O O F Actual Actual Winning Combination Payout Probablility Count Probability ========================================================*/#define THREE_SPACESHIP_PAYOUT 600 // 0.000064 0.00006860 see the excel spreadsheet #define THREE_SYMBOL_PAYOUT 122 // 0.001536 0.00151760 that accompanies this program.#define TWO_SPACESHIP_PAYOUT 50 // 0.004608 0.00468740#define ONE_SPACESHIP_PAYOUT 3 // 0.110592 0.11064389#define TWO_SYMBOL_PAYOUT 2 // 0.105984 0.10575249//// With these payouts the Volatility Index is 16.43////- Macros#define ClearBit(x,y) x &=~y#define SetBit(x,y) x |=y#define ClearBitNo(x,y) x &=~_BV(y) #define SetState(x) SetBit(machineState, x)//- Defines#define DEBUG 1 // turns on (1) and off (0) output from debug* functions#define BAUD_RATE 38400 // Baud r ate for the Serial monitor #define NUMFRAMES 25 // Number of symbols in each "reel" or "slot". e.g three reels:|7|7|7|#define LINESPERFRAME 8 // each line corresponds to one row on the 8x8 dot matrix LED#define FRAME_DELAY 100 // milliseconds, controls the speed of the spinning reels#define NUMREELS 3 // the hardware (8x8 matricies) accomodates 4 reels, we're only using three now #define DEBOUNCE_TIME 1000 // microseconds (changed from 500 to 1000 to cut down on double press problem) #define BUTTON_DDR DDRD // this accomodates the button that starts the reels spinning#define BUTTON_PORT PORTD#define BUTTON_PIN PIND#define PCMSK_BUTTON PCMSK2#define PCIE_BUTTON PCIE2 #define BUTTON_SPIN_PIN DDD2 // the actual spin button#define BUTTON_SPIN_INT PCINT18#define BUTTON_SPIN_PORT PORTD2 #define NAV_DDR DDRC // this is for the buttons that control menu navigation on the 20x4 LCD#define NAV_PORT PORTC#define NAV_PIN PINC#define PCMSK_NAV PCMSK1#define PCIE_NAV PCIE1 #define NAV_UP_PIN DDC1 // Navigate up button#define NAV_UP_INT PCINT9#define NAV_UP_PORT PORTC1 #define NAV_DOWN_PIN DDC 2 // Navigate down button#define NAV_DOWN_INT PCINT10#define NAV_DOWN_PORT PORTC2 #define SELECT_PIN DDC3 // Select current menu item button#define SELECT_INT PCINT11#define SELECT_PORT PORTC3 #define BUZZER_DDR DDRB // This is for the slot machines piezo buzzer#define BUZZER_PORT PORTB#define BUZZER_PIN DDB3#define TONE_PIN 11 // Pin you have speaker/piezo connected to (TODO:be sure to include a 100ohm resistor).#define EVENT_NONE 0 // These are all of the various events that can occur in the machine#define EVENT_SPIN 1#define EVENT_SHOW_MENU 2 #define EVENT_SELECT 3#define EVENT_NAV_UP 4#define EVENT_NAV_DOWN 5#define EVENT_BACK 6#define EVENT_PLAY 10#define EVENT_BET 11#define EVENT_SETTINGS 12#define EVENT_VIEW_METRICS 13#define EVENT_RESET 14#define EVENT_HOLD 15#define STATE_IDLE B00000001 // These are the various states the machine can be in, not all are#define STATE_SPINNING B00000010 // mutually exclusive.#define STATE_AUTO B00000100 // This state is for automatically running the program to gather metrics.#define STATE_SHOW_MENU B00001000 // State we're in when showing the menu. Note you can spin and show menu // concurrently.#define MINIMUM_WAGER 5 // TODO:consider this something that can be changed via settings#define WAGER_INCREMENT 5 // TODO:consider this something that can be changed via settings#define ONE_SECOND 1000 // # milliseconds in one second. Used to control how long the siren sounds. #define SHIP_LOC 144 // Location of various symbols in the array of symbols maintained in SlotMachine.h#define ALIEN_1_LOC 152 // needed for animation#define ALIEN_2_LOC 160#define EEPROM_FREQ 10000 // Write to EEPROM every Nth play#define AUTO_MODE_MAX 1000000 // stop after this many plays in auto mode#define RED 1 // TODO:should we use an enum here? Must be a better way...#define GREEN 2#define BLUE 3#define PURPLE 4#define WHITE 5#define OFF 6#define MAX_NOTE 4978 // Maximum high tone in hertz. Used for siren.#define MIN_NOTE 31 // Minimum low tone in hertz. Used for siren.#define STARTING_CREDIT_BALANCE 500 // Number of credits you have at "factory reset".#define DEFAULT_HOLD 0 // default hold is zero, over time the machine pays out whatever is wagered#define NUM_LED_DATAIN 7#define NUM_LED_CLK 6#define NUM_LED_LOAD 5#define NUM_CHIP_COUNT 1#define MATRIX_LED_DATAIN 8#define MATRIX_LED_CLK 13#define MATRIX_LED_LOAD 12#define MATRIX_CHIP_COUNT 4#define LOW_INTENSITY 1 // dim#define HIGH_INTENSITY 10 // bright#define SIREN_FLASHES 1#define LCD_SCREEN_WIDTH 20#define LCD_SCREEN_HEIGHT 4#define CREDITS_I2C_SLAVE_ADDR 0x10 // I2C addresses#define LCD_I2C_ADDR 0x3F // LCD display w/ 4 lines#define BACKLIGHT_PIN 3#define En_pin 2#define Rw_pin 1#define Rs_pin 0#define D4_pin 4#define D5_pin 5#define D6_pin 6#define D7_pin 7#define MENU_SIZE 17#define MAIN_MENU_NUMBER 0#define MAIN_MENU_ELEMENTS 6char *mainMenu[] ={ "Play", "Bet", "Settings", "Metrics", "Reset", "Hold", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " };#define B ET_MENU_NUMBER 1#define BET_MENU_ELEMENTS 3char *betMenu[] ={ "+5 credits:", // TODO:make this dynamic based on WAGER_INCREMENT "-5 credits:", "Back", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " };#define SETTINGS_MENU_NUMBER 2#define SETTINGS_MENU_ELEMENTS 3#define SETTINGS_BACK_ITEM 2char *settingsMenu[] ={ "Auto/Manual", // TODO:fill out this menu with more cool options "Toggle Sound ", "Back ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " };#define METRICS_MENU_NUMBER 3#define METRICS_MENU_ELEMENTS 15char *metricsMenu[METRICS_MENU_ELEMENTS];#define HOLD_MENU_NUMBER 4#define HOLD_MENU_ELEMENTS 3char *holdMenu[] ={ "+1 percent:", "-1 percent:", "Back", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " " };int selectPos =0;int menuNumber =MAIN_MENU_NUMBER;int elements =MAIN_MENU_ELEMENTS;char *currentMenu[MENU_SIZE];LiquidCrystal_I2C lcd( LCD_I2C_ADDR, // Create the LCD display object for the 20x4 display En_pin, Rw_pin, Rs_pin, D4_pin, D5_pin, D6_pin, D7_pin );LedControl lc=LedControl( MATRIX_LED_DATAIN, // Create the LED display object for the 8x8 matrix MATRIX_LED_CLK, MATRIX_LED_LOAD, MATRIX_CHIP_COUNT ); // Pins:DIN,CLK,CS, # of chips connectedvolatile int reelArrayPos[NUMREELS];volatile byte machineState;volatile byte event =EVENT_NONE;volatile byte color =RED;#define ADC_READ_PIN 0 // we read the voltage from this floating pin to seed the random number generator#define RED_PIN 9 // Pin locations for the RGB LED#define GREEN_PIN 10#define BLUE_PIN 3#define NUM_NOTES 5 // The number of notes in the melody // EEProm address locations#define PAYEDOUT_ADDR 0x00 // 4 bytes#define WAGERED_ADDR 0x04 // 4 bytes#define PLAYED_ADDR 0x08 // 4 bytes#define TWO_MATCH_ADDR 0x12 // 4 bytes#define THREE_MATCH_ADDR 0x16 // 2 bytes#define SHIP_ONE_MATCH_ADDR 0x18 // 4 bytes#define SHIP_TWO_MATCH_ADDR 0x22 // 2 bytes#define SHIP_THREE_MATCH_ADDR 0x24 // 2 bytes#define EEPROM_WRITES_ADDR 0x34 // 4 bytes#define RESET_FLAG_ADDR 0x38 // 4 bytes#define CREDIT_BALANCE_ADDR 0x42 // 4 bytes#define HOLD_ADDR 0x46 // 2 bytesboolean sound =true;byte reelMatches =0; // per play variablesbyte shipMatches =0;unsigned long wagered =0; // amount wagered on a single spindouble owedExcess =0; // change, need to track this so hold is accurateunsigned long twoMatchCount =0; // 1 if two symbols matchunsigned int threeMatchCount =0; // 1 if three symbols matchunsigned long shipOneMatchCount =0; // 1 if there's one ship presentunsigned int shipTwoMatchCount =0; // 1 if there are two ships presentunsigned int shipThreeMatchCount =0; // 1 if there are three ships present (Jackpot!)unsigned long totalCalcs =0; // total plays only relavent in auto modesigned long startingCreditBalance; // the credit balance before spinningint increment =WAGER_INCREMENT;#define DISP_CREDIT_INCREMENT 1 // on the seven segment display, increment/decrement the balance by this value until the final value is reached. // lifetime variables (stored in EEprom) Reset sets most back to zerounsigned long storedPayedOut; // sum of all payoutsunsigned long storedWagered; // sum of all wagers (profit =payouts - wagers)unsigned long storedPlays; // the number of spinsunsigned long storedTwoMatchCount; // number of times two symbols have matchedunsigned int storedThreeMatchCount; // number of times three symbols have matchedunsigned long storedShipOneMatchCount; // number of times one ship has appearedunsigned int storedShipTwoMatchCount; // number of time two ships have appearedunsigned int storedShipThreeMatchCount; // number of times three ships have appeared (Jackpot!)unsigned long storedEEpromWrites; // number of times we've written to EEprom. 100,000 is the approximate maximumsigned long storedCreditBalance; // the credit balance.int storedHold =DEFAULT_HOLD; // the house advantage, in percent, usually between 1 and 15, 2 bytes volatile byte portdhistory =0b00000100; // default is high because of the pull-up, correct settingvolatile byte portchistory =0b00001110; // default is high because of the pull-up, correct setting //- Debugging Routines // These routines are helpful for debugging, I will leave them in for your use. // For sending output to the serial monitor. Set the baud rate in setup.void debug(String text) { if (DEBUG) { Serial.println(text); }}void debugNoLF(String text) { if (DEBUG) { Serial.print(text); }}void debugInt(signed int anInt) { if (DEBUG) { char myInt[10]; itoa(anInt,myInt,10); debug(myInt); }}void debugLong(signed long aLong) { if (DEBUG) { char myLong[10]; ltoa(aLong,myLong,10); debug(myLong); }}void debugDouble(double aDouble) { if (DEBUG) { char *myDouble =ftoa(aDouble); debug(myDouble); }}void debugMetric(const char myString[], signed int anInt) { if (DEBUG) { debugNoLF(myString);debugNoLF(F(":")); debugInt(anInt); Serial.print(F("\r\n")); }}void debugMetricLong(const char myString[], signed long aLong) { if (DEBUG) { debugNoLF(myString);debugNoLF(F(":")); debugLong(aLong); Serial.print(F("\r\n")); }}void debugStoredMetrics() { for (int i =0; i <11; i++) { debug(metricsMenu[i]); }}void debugMetricDouble(const char myString[], double aDouble) { if (DEBUG) { debugNoLF(myString);debugNoLF(F(":")); debugDouble(aDouble); Serial.print(F("\r\n")); }} // quick and dirty ftoa for legacy codechar *ftoa(double f) // from https://www.microchip.com/forums/m1020134.aspx{ static char buf[17]; char * cp =buf; unsigned long l, rem; if(f <0) { *cp++ ='-'; f =-f; } l =(unsigned long)f; f -=(double)l; rem =(unsigned long)(f * 1e6); sprintf(cp, "%lu.%10.10lu", l, rem); return buf;}//- All Other Functionsvoid beep() { // Beep and flash LED green unless STATE_AUTO setGreen(); if (sound) { BUZZER_PORT |=(1 < 0) { celebrateWin(reelMatches); } setupMetricsMenu(); } else if ((totalCalcs++%EEPROM_FREQ) ==0) { // EEPROM can be written ~100,000 times, storeMetrics(); displayCredits(); // displayCredits takes care of the sign on increment setupMetricsMenu(); debugStoredMetrics(); debugMetricDouble("owedExcess",owedExcess); // don't want to put owedExcess in metricsMenu because of global var space shortage if (totalCalcs>=AUTO_MODE_MAX) { // drop out of auto mode when threshold exceeded ClearBit(machineState, STATE_AUTO); SetState(STATE_IDLE); event =EVENT_NONE; } } ClearBit(machineState, STATE_SPINNING);}void spin() {//debug("spin()"); SetState(STATE_SPINNING); if (!(STATE_AUTO ==(machineState &STATE_AUTO))) { beep(); } zeroAllBalances(); byte reelsStopped[NUMREELS] ={0,0,0}; byte stopArrayPos[NUMREELS]; for (int reelNum =0; reelNum  0) { winnings =wagered * (THREE_SPACESHIP_PAYOUT - (THREE_SPACESHIP_PAYOUT * (storedHold/100.0))); // winnings are the amount wagered times the payout minus the hold. } else if (threeMatchCount> 0) { winnings =wagered * (THREE_SYMBOL_PAYOUT - (THREE_SYMBOL_PAYOUT * (storedHold/100.0))); } else if (shipTwoMatchCount> 0) { winnings =wagered * (TWO_SPACESHIP_PAYOUT - (TWO_SPACESHIP_PAYOUT * (storedHold/100.0))); } else if (shipOneMatchCount> 0) { winnings =wagered * (ONE_SPACESHIP_PAYOUT - (ONE_SPACESHIP_PAYOUT * (storedHold/100.0))); } else if (twoMatchCount> 0) { winnings =wagered * (TWO_SYMBOL_PAYOUT - (TWO_SYMBOL_PAYOUT * (storedHold/100.0))); } else { winnings =0; } signed long roundWinnings =(signed long) round(winnings); owedExcess +=winnings - roundWinnings; // owedExcess is the change; credits between -1 and 1. if (owedExcess>=1 || owedExcess <=-1) { // if we can pay out some excess int roundOwedExcess =(int) round(owedExcess); roundWinnings +=roundOwedExcess; // add the rounded portion to the winnings owedExcess -=roundOwedExcess; // subtract out what we added to continue to track the excess } roundWinnings -=wagered; // you pay for your bet whether you won or not! // winnings -=wagered; return roundWinnings;// return((signed long) round(winnings));}void calcStored(signed long winnings) { storedPayedOut +=winnings; storedWagered +=wagered; startingCreditBalance =storedCreditBalance; storedCreditBalance +=winnings; storedPlays +=1; // calcStored is called one time per play storedTwoMatchCount +=twoMatchCount; storedThreeMatchCount +=threeMatchCount; storedShipOneMatchCount +=shipOneMatchCount; storedShipTwoMatchCount +=shipTwoMatchCount; storedShipThreeMatchCount +=shipThreeMatchCount;}void storeMetrics() { beepAuto(); // so we know we're not hung in auto mode. updateStoredPayedOut(); updateStoredWagered(); updateStoredPlays(); updateStoredTwoMatchCount(); updateStoredThreeMatchCount(); updateStoredShipOneMatchCount(); updateStoredShipTwoMatchCount(); updateStoredShipThreeMatchCount(); storedEEpromWrites++; updateStoredEEpromWrites(); updateStoredCreditBalance(); updateStoredHold();}void displayCredits() {//debug("displayCredits()"); int xmitIncrement; if ((STATE_AUTO ==(machineState &STATE_AUTO))) { // display the credits here if we're in auto mode. xmitIncrement =abs(startingCreditBalance - storedCreditBalance); // we don't want the display slave to count up/down } else { xmitIncrement =DISP_CREDIT_INCREMENT; // set increment back to what it should be during manual play } Wire.beginTransmission(CREDITS_I2C_SLAVE_ADDR); Wire.write( startingCreditBalance &0xFF); Wire.write((startingCreditBalance &0xFF00)>> 8); Wire.write((startingCreditBalance &0xFF0000)>> 16); Wire.write((startingCreditBalance &0xFF000000)>> 24); // most sigificant byte sent last if (startingCreditBalance> storedCreditBalance) { // if the player lost, xmitIncrement *=-1; // flip the sign on increment so we count down } Wire.write( xmitIncrement &0xFF); Wire.write((xmitIncrement &0xFF00)>> 8); Wire.write( storedCreditBalance &0xFF); Wire.write((storedCreditBalance &0xFF00)>> 8); Wire.write((storedCreditBalance &0xFF0000)>> 16); Wire.write((storedCreditBalance &0xFF000000)>> 24); // most sigificant byte sent last byte error =Wire.endTransmission(); if (error==4) { debug(F("Unknown error at address")); // I've never seen this happen. } }bool allReelsStopped(byte reelsStopped[]) { byte sumStopped =0; for (int i; i  
SlotMachine.hC Header File 
 
const byte reel[] ={ // 0 star B10011001, //0 B01011010, B00111100, B11111111, B11111111, B00111100, B01011010, B10011001, // 1 one spot on dice B00000000, // 8 B00000000, B00000000, B00011000, B00011000, B00000000, B00000000, B00000000, // 2 three bars B11111111, // 16 B11111111, B00000000, B11111111, B11111111, B00000000, B11111111, B11111111, // 3 heart B01100110, // 24 B11111111, B11111111, B11111111, B11111111, B01111110, B00111100, B00011000, // 4 two spots on dice B00000000, // 32 B01100000, B01100000, B00000000, B00000000, B00000110, B00000110, B00000000, // 5 seven B00000000, // 40 B01111110, B01111110, B00001100, B00011000, B00111000, B00111000, B00000000, // 6 dollar sign B00011000, // 48 B00111100, B01011010, B00111000, B00011100, B01011010, B00111100, B00011000, // 7 three spots on dice B00000000, B01100000, B01100000, B00011000, B00011000, B00000110, B00000110, B00000000, // 8 inverse 9 spots, hashtag # B00100100, B00100100, B11111111, B00100100, B00100100, B11111111, B00100100, B00100100, // 9 one bar B00000000, B00000000, B00000000, B11111111, B11111111, B00000000, B00000000, B00000000, // 10 four on dice B00000000, B01100110, B01100110, B00000000, B00000000, B01100110, B01100110, B00000000, // 11 inverse seven B11111111, B10000001, B10000001, B11110011, B11100111, B11000111, B11000111, B11111111, // 12 9 spots B11011011, B11011011, B00000000, B11011011, B11011011, B00000000, B11011011, B11011011, // 13 five on dice B00000000, B01100110, B01100110, B00011000, B00011000, B01100110, B01100110, B00000000, // 14 two bars B00000000, B11111111, B11111111, B00000000, B00000000, B11111111, B11111111, B00000000, // 15 Alien 0 (120) B01000010, B00100100, B01111110, B11011011, B11111111, B11111111, B10100101, B00100100, // 16 smile face (128) B00000000, B00100100, B00000000, B00011000, B01000010, B01000010, B00111100, B00011000, // 17 6 on dice (136) B00000000, B11011011, B11011011, B00000000, B00000000, B11011011, B11011011, B00000000, // 18 SpaceShip (144) B00000000, B00000000, B00111100, B01111110, B10101011, B01111110, B00111100, B00000000, // 19 Alien 1 (152) B00011000, B00111100, B01111110, B11011011, B11111111, B00100100, B01011010, B10100101, // 20 Alien 2 (160) B00011000, B00111100, B01111110, B11011011, B11111111, B00100100, B01011010, B01000010, // 21 Alien 3 (168) B00000000, B10000001, B11111111, B11011011, B11111111, B01111110, B00100100, B01000010, // 22 one B00010000, B00110000, B00010000, B00010000, B00010000, B00010000, B00010000, B00111000, // 23 two B00111000, B01000100, B10000010, B00000100, B00001000, B00010000, B00100000, B11111110, // 24 three B11111111, // 192 B00000010, B00000100, B00011100, B00000010, B00000100, B00001000, B11100000};/************************************************* * Public Constants *************************************************/#define NOTE_B0 31#define NOTE_C1 33#define NOTE_CS1 35#define NOTE_D1 37#define NOTE_DS1 39#define NOTE_E1 41#define NOTE_F1 44#define NOTE_FS1 46#define NOTE_G1 49#define NOTE_GS1 52#define NOTE_A1 55#define NOTE_AS1 58#define NOTE_B1 62#define NOTE_C2 65#define NOTE_CS2 69#define NOTE_D2 73#define NOTE_DS2 78#define NOTE_E2 82#define NOTE_F2 87#define NOTE_FS2 93#define NOTE_G2 98#define NOTE_GS2 104#define NOTE_A2 110#define NOTE_AS2 117#define NOTE_B2 123#define NOTE_C3 131#define NOTE_CS3 139#define NOTE_D3 147#define NOTE_DS3 156#define NOTE_E3 165#define NOTE_F3 175#define NOTE_FS3 185#define NOTE_G3 196#define NOTE_GS3 208#define NOTE_A3 220#define NOTE_AS3 233#define NOTE_B3 247#define NOTE_C4 262#define NOTE_CS4 277#define NOTE_D4 294#define NOTE_DS4 311#define NOTE_E4 330#define NOTE_F4 349#define NOTE_FS4 370#define NOTE_G4 392#define NOTE_GS4 415#define NOTE_A4 440#define NOTE_AS4 466#define NOTE_B4 494#define NOTE_C5 523#define NOTE_CS5 554#define NOTE_D5 587#define NOTE_DS5 622#define NOTE_E5 659#define NOTE_F5 698 #define NOTE_FS5 740#define NOTE_G5 784#define NOTE_GS5 831#define NOTE_A5 880#define NOTE_AS5 932#define NOTE_B5 988#define NOTE_C6 1047 #define NOTE_CS6 1109#define NOTE_D6 1175#define NOTE_DS6 1245#define NOTE_E6 1319#define NOTE_F6 1397 #define NOTE_FS6 1480#define NOTE_G6 1568 #define NOTE_GS6 1661#define NOTE_A6 1760 #define NOTE_AS6 1865#define NOTE_B6 1976#define NOTE_C7 2093#define NOTE_CS7 2217#define NOTE_D7 2349#define NOTE_DS7 2489#define NOTE_E7 2637#define NOTE_F7 2794#define NOTE_FS7 2960#define NOTE_G7 3136#define NOTE_GS7 3322#define NOTE_A7 3520#define NOTE_AS7 3729#define NOTE_B7 3951#define NOTE_C8 4186#define NOTE_CS8 4435#define NOTE_D8 4699#define NOTE_DS8 4978
 
slotCreditsDisplaySlave.inoArduino 
 
/*slotCreditsDisplaySlave.ino Version:1.0 Date:2018/07/01 - 2018/07/29 Device:ATMega328P-PU @ 16mHz Language:C Purpose =======`The .purpose of this program is to function as an I2C slave responsible for displaying credits in a slot machine Known Defects =============- TODO ====- is 38400 an efficient baud rate for arduino running at 16mhz? - include a 100 ohm resistor with the piezo buzzer - is 100kHz the fastest setting we can accomodate w/ Wire library? Warnings ========- Suggestions ===========- Author ======- Copyright 2018, Daniel Murphy  License =======Daniel J. Murphy hereby disclaims all copyright interest in this program written by Daniel J. Murphy. This program is free software:you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; zonder zelfs de impliciete garantie van VERKOOPBAARHEID of GESCHIKTHEID VOOR EEN BEPAALD DOEL. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Libraries =========- https://github.com/wayoda/LedControl The Program ===========- Includes */#include #include "LedControl.h"#define BAUD_RATE 38400 #define CREDITS_SLAVE_ADDR 16 #define DISPLAY_DELAY 5#define DEBUG 1#define BUZZER_DDR DDRB#define BUZZER_PORT PORTB#define BUZZER_PIN DDB1#define TONE_PIN 9 // Pin you have speaker/piezo connected to (be sure to include a 100 ohm resistor).#define BEEP_LENGTH 100 // Now we need a LedControl to work with. // pin 12 is connected to the DataIn // pin 11 is connected to the CLK // pin 10 is connected to LOAD // We have only a single MAX72XX.LedControl lc=LedControl(12,11,10,1);static const int slaveAddress =CREDITS_SLAVE_ADDR; long volatile theCredits[10] ={0L,0L,0L,0L,0L,0L,0L,0L,0L,0L};signed long volatile displayedBalance =0;signed long volatile startingCreditBalance =0;signed long volatile endingCreditBalance;signed int volatile increment;boolean volatile updateDisplayFlag =false;void debug(String text) { if (DEBUG) { Serial.println(text); }}void debugNoLF(String text) { if (DEBUG) { Serial.print(text); }}void debugInt(signed int anInt) { if (DEBUG) { char myInt[10]; itoa(anInt,myInt,10); debug(myInt); }}void debugLong(signed long aLong) { if (DEBUG) { char myLong[10]; ltoa(aLong,myLong,10); debug(myLong); }}void debugMetric(const char myString[], signed int anInt) { if (DEBUG) { debugNoLF(myString);debugNoLF(":"); debugInt(anInt); Serial.print("\r\n"); }}void debugMetricLong(const char myString[], signed long aLong) { if (DEBUG) { debugNoLF(myString);debugNoLF(":"); debugLong(aLong); Serial.print("\r\n"); }}void beep() { BUZZER_PORT |=(1 <  
 
 Schema's  
  slotmachine_1nXzMvYVPH.fzzThis spreadsheet was used to prove that the payout table is correct. Sheet password is "password". slotpayouttablecalc_v1_1_SfcpHOBOvf.xlsx 
Close Encounters Slot Machine
 link to files on Fritzing.orgSchematics on Fritzing.org  The Fritzing Schematic