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Message: [QUOTE="N2GN2, post: 1316008, member: 7309"] I know just enough to get myself in trouble. My brother-in-law is the one who can code. Here's where I'm at if anyone was interested. [code] //Powerstroke Diesel Flow Bench Controller #include <digitalWriteFast.h> #include <LiquidCrystal.h> LiquidCrystal lcd(12, 11, 5, 4, 3, 2); const int FDCSpin = 13; // Fuel Delivery Control Signal const int CIPin = 10; // Cylinder Identification const int buttonPin = 2; // Start Button const int speakerPin = 8; //Speaker bool buttonState = LOW; // Button is off double RPM = 1000; double PW = 1.5; double FDCSoffus = int(1000/(RPM/60)/4 - PW); int PWus = int(PW*1000); int ciCnt; int totalCnt; bool CIState = HIGH; void setup() { lcd.begin(16, 2); lcd.print("READY TO TEST"); // Waiting for button press pinMode(FDCSpin, OUTPUT); // Fuel Delivery Control Signal pinMode(CIPin, OUTPUT); // Cylinder Identification pinMode(buttonPin, INPUT); // Start Button digitalWriteFast2(FDCSpin, LOW); digitalWriteFast2(CIPin, LOW); } void loop() { buttonState = digitalReadFast2(buttonPin); // Read Start Button State if (buttonState == HIGH) runInjectorTest(); // Button is pressed } void runInjectorTest() { lcd.print("TEST RUN"); tone(speakerPin, 500, 500); delay(700); tone(speakerPin, 500, 500); delay(700); tone(speakerPin, 500, 500); delay(700); tone(speakerPin, 2000, 500); while (totalCnt < 2000) { digitalWriteFast2(CIPin, CIState); while (ciCnt < 4) { digitalWriteFast2(FDCSpin, HIGH); delayMicroseconds(PWus); digitalWriteFast2(FDCSpin, LOW); delayMicroseconds(FDCSoffus); ciCnt++; } CIState = !CIState; ciCnt = 0; totalCnt++; } lcd.print("TEST FINISHED"); // LCD after loop is complete tone(speakerPin, 2000, 500); delay(700); tone(speakerPin, 2000, 500); delay(700); tone(speakerPin, 2000, 500); delay(700); tone(speakerPin, 500, 500); totalCnt = 0; } [/code] [/QUOTE]