Grapefruit IPA Tasting and Code (8/29/16)

Finally my last batch (for now) is finished:

Unfortunately, I don't think the seal on some of the bottles was very good, so it did not carbonate very well. It's possible something went wrong with my bottle capper after my last batch when it went on crooked and broke a bottle, or maybe I was just too timid this time with using it. Otherwise, the beer was pretty clear and fresh tasting with the grapefruit flavoring, but wasn't my favorite flavor. Of the people who tried it, some liked it and some didn't, so who knows if it turned out the way it was supposed to. I'll have to try again one day to make sure.

I also wanted to include the code I used when brewing this batch. It is pretty similar to my original code, but I changed the alerts to be specific to this recipe, and changed the heating mechanism during the boil - I also added this change in as an edit to my old code post from 7/4/16. This served to turn off the heater until the water fell a few degrees, so that less liquid was lost during the boil as compared to having the heater on the whole time.
  #include <Time.h> #include <TimeLib.h> #include <OneWire.h> // Adapted from "OneWire DS18S20, DS18B20, DS1822 Temperature Example" by Sonia Holar and Christian Volz - July 2016 // Procedure for Grapefruit IPA // // http://www.pjrc.com/teensy/td_libs_OneWire.hTimel // // The DallasTemperature library can do all this work for you! // http://milesburton.com/Dallas_Temperature_Control_Library OneWire ds(2); // probe on pin 2 #define RELAY_PIN 10 //relay pin 10 const int buzzerPin = 9; //piezo buzzer on pin 9 int x = 0; int y = 0; int SteepStart = 50000; //steep and boil starts set high so that timing if-statements //later cannot be true until these get set to actual reasonable values later int Stage1 = 1; int Stage2 = 0; int reachBoil = 0; int boilStart = 50000; //my added variables void setup(void) { pinMode(RELAY_PIN, OUTPUT); pinMode(buzzerPin, OUTPUT); Serial.begin(9600); tone(buzzerPin,1000,1000); //beep once on startup } void loop(void) { byte i; byte present = 0; byte type_s; byte data[12]; byte addr[8]; float celsius, fahrenheit; if ( !ds.search(addr)) { Serial.println("No more addresses."); Serial.println(); ds.reset_search(); delay(250); return; } Serial.print("ROM ="); for( i = 0; i < 8; i++) { Serial.write(' '); Serial.print(addr[i], HEX); } if (OneWire::crc8(addr, 7) != addr[7]) { Serial.println("CRC is not valid!"); return; } Serial.println(); // the first ROM byte indicates which chip switch (addr[0]) { case 0x10: Serial.println(" Chip = DS18S20"); // or old DS1820 type_s = 1; break; case 0x28: Serial.println(" Chip = DS18B20"); type_s = 0; break; case 0x22: Serial.println(" Chip = DS1822"); type_s = 0; break; default: Serial.println("Device is not a DS18x20 family device."); return; } ds.reset(); ds.select(addr); ds.write(0x44,1); // start conversion, with parasite power on at the end delay(1000); // maybe 750ms is enough, maybe not // we might do a ds.depower() here, but the reset will take care of it. present = ds.reset(); ds.select(addr); ds.write(0xBE); // Read Scratchpad Serial.print(" Data = "); Serial.print(present,HEX); Serial.print(" "); for ( i = 0; i < 9; i++) { // we need 9 bytes data[i] = ds.read(); Serial.print(data[i], HEX); Serial.print(" "); } Serial.print(" CRC="); Serial.print(OneWire::crc8(data, 8), HEX); Serial.println(); // convert the data to actual temperature unsigned int raw = (data[1] << 8) | data[0]; if (type_s) { raw = raw << 3; // 9 bit resolution default if (data[7] == 0x10) { // count remain gives full 12 bit resolution raw = (raw & 0xFFF0) + 12 - data[6]; } } else { byte cfg = (data[4] & 0x60); if (cfg == 0x00) raw = raw << 3; // 9 bit resolution, 93.75 ms else if (cfg == 0x20) raw = raw << 2; // 10 bit res, 187.5 ms else if (cfg == 0x40) raw = raw << 1; // 11 bit res, 375 ms // default is 12 bit resolution, 750 ms conversion Time } celsius = (float)raw / 16.0; fahrenheit = celsius * 1.8 + 32.0; Serial.print(" Temperature = "); Serial.print(celsius); Serial.print(" Celsius, "); Serial.print(fahrenheit); Serial.println(" Fahrenheit"); //MY CODE: if (Stage1 == 1) { //stage1 = heating up and then steeping grains Serial.println(x); Serial.println(y); Serial.println(Stage1); Serial.println(Stage2); Serial.println(now()); //just for our information/to make sure everything works properly if (fahrenheit >= 160){ digitalWrite(RELAY_PIN, LOW); //turn off heat Serial.println("Relay off"); if (x==0){ x=1; } } else if (fahrenheit <= 155){ digitalWrite(RELAY_PIN, HIGH); //turn on heat Serial.println("Relay on stage 1"); } } if (y!=x){ SteepStart = now(); tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.print("NEW SteepStart: "); Serial.println(SteepStart); y=x; Serial.println("Add grains");//alert us to add grains } if (now() >= (SteepStart+1200) && now() < (SteepStart+1210)){ //at 20 min mark Stage1 = 0; Stage2 = 1; tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.println("Remove grains");//alert us to remove grains } if (Stage2 == 1){ //stage2 = bring to boil and maintain 60 mins Serial.println(x); Serial.println(y); Serial.println(Stage1); Serial.println(Stage2); Serial.println(now()); if (fahrenheit <= 203){ digitalWrite(RELAY_PIN, HIGH); //heat on Serial.println("Relay on stage 2"); } else if (fahrenheit >= 205){ digitalWrite(RELAY_PIN, LOW); //heat off - want to prevent losing too much water by just leaving heat on during all of boil if (reachBoil == 0){ tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) reachBoil = 1; boilStart = now(); Serial.print("boilStart set to "); Serial.println(boilStart); Serial.println("Add DME and first hops"); //alert us to add DME } } } if (now() >= (boilStart+2400) && now() <= (boilStart+2410)){ tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.println("40 min have passed, add next hops");//alert us 40 min mark } if (now() >= (boilStart+3000) && now() <= (boilStart+3010)){ tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.println("10 min have passed, add next hops");//alert us 10 min mark } if (now() >= (boilStart+3300) && now() <= (boilStart+3310)){ tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.println("5 min have passed, add spice pack");//alert us 5 min mark } if (now() >= (boilStart+3600) && now() <= (boilStart+3610)){ digitalWrite(RELAY_PIN, LOW);//heat off tone(buzzerPin, 1000, 1000); //(pin,frequency,duration in ms) Serial.println("5 min passed, Relay off"); //alert us 5 min mark Stage2 = 0; //end stage 2 } }

This will be my last post for now, although I do plan to keep brewing when I have the time, and hopefully improve my automation and even add new elements to it (I have a few more ideas to explore). I hope this blog was informative and helpful to anyone trying something similar!