{"id":153,"date":"2020-02-15T21:23:48","date_gmt":"2020-02-15T21:23:48","guid":{"rendered":"http:\/\/akoutsouli.sites.sch.gr\/?p=153"},"modified":"2020-02-15T21:23:48","modified_gmt":"2020-02-15T21:23:48","slug":"lovemeter","status":"publish","type":"post","link":"https:\/\/akoutsouli.sites.sch.gr\/?p=153","title":{"rendered":"lovemeter"},"content":{"rendered":"\n
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\u03c4\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03c4\u03bf\u03c5 lovemeter <\/strong><\/figcaption><\/figure><\/div>\n\n\n\n

O \u03ba\u03ce\u03b4\u03b9\u03ba\u03b1\u03c2 <\/h2>\n\n\n\n
const int sensorPin = A0;\n\/\/ room temperature in Celsius\nconst float baselineTemp = 20.0;\n\nvoid setup<\/strong>(){\n  \/\/ open a serial connection to display values\n  Serial.begin(9600);\n  \/\/ set the LED pins as outputs\n  \/\/ the for() loop saves some extra coding\n  for(int pinNumber = 2; pinNumber<5; pinNumber++){\n    pinMode(pinNumber,OUTPUT);\n    digitalWrite(pinNumber, LOW);\n  }\n}\n\nvoid loop<\/strong>(){\n  \/\/ read the value on AnalogIn pin 0 \n  \/\/ and store it in a variable\n  int sensorVal = analogRead(sensorPin);\n\n  \/\/ send the 10-bit sensor value out the serial port\n  Serial.println(\"sensor Value: \");\n  Serial.println(sensorVal); \n\n  \/\/ convert the ADC reading to voltage\n  float voltage = (sensorVal\/1024.0) * 5.0;\n\n  \/\/ Send the voltage level out the Serial port\n  Serial.println(\", Volts: \");\n  Serial.println(voltage);\n\n  \/\/ convert the voltage to temperature in degrees C\n  \/\/ the sensor changes 10 mV per degree\n  \/\/ the datasheet says there's a 500 mV offset\n  \/\/ ((volatge - 500mV) times 100)\n  Serial.println(\", degrees C: \"); \n  float temperature = (voltage - .5) * 100;\n  Serial.println(temperature);\n\n  \/\/ if the current temperature is lower than the baseline\n  \/\/ turn off all LEDs\n  if(temperature < baselineTemp){\n    digitalWrite(2, LOW);\n    digitalWrite(3, LOW);\n    digitalWrite(4, LOW);\n  } \/\/ if the temperature rises 2-4 degrees, turn an LED on \n  else if(temperature >= baselineTemp+2 && temperature < baselineTemp+4){\n    digitalWrite(2, HIGH);\n    digitalWrite(3, LOW);\n    digitalWrite(4, LOW);\n  } \/\/ if the temperature rises 4-6 degrees, turn a second LED on  \n  else if(temperature >= baselineTemp+4 && temperature < baselineTemp+6){\n    digitalWrite(2, HIGH);\n    digitalWrite(3, HIGH);\n    digitalWrite(4, LOW);\n  } \/\/ if the temperature rises more than 6 degrees, turn all LEDs on\n  else if(temperature >= baselineTemp+6){\n    digitalWrite(2, HIGH);\n    digitalWrite(3, HIGH);\n    digitalWrite(4, HIGH);\n  }\n  delay(100);\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
O \u03ba\u03ce\u03b4\u03b9\u03ba\u03b1\u03c2 const int sensorPin = A0; \/\/ room temperature in Celsius const float baselineTemp = 20.0; void setup(){   \/\/ open a serial connection to display values   Serial.begin(9600);   \/\/ set the LED pins as outputs   \/\/ the for() loop saves some extra coding   for(int pinNumber = 2; pinNumber<5; pinNumber++){     pinMode(pinNumber,OUTPUT);     digitalWrite(pinNumber, LOW);   } } void loop(){   \/\/ read the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-153","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/posts\/153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=153"}],"version-history":[{"count":1,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/posts\/153\/revisions"}],"predecessor-version":[{"id":155,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=\/wp\/v2\/posts\/153\/revisions\/155"}],"wp:attachment":[{"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/akoutsouli.sites.sch.gr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}