{"id":761,"date":"2025-05-06T11:46:05","date_gmt":"2025-05-06T08:46:05","guid":{"rendered":"https:\/\/anastasiiaradashevatar.wordpress.com\/?page_id=761"},"modified":"2025-05-06T11:46:05","modified_gmt":"2025-05-06T08:46:05","slug":"6-katse","status":"publish","type":"page","link":"https:\/\/anastasiiaradasheva24.thkit.ee\/wp\/eng\/6-katse\/","title":{"rendered":"6 Buzzeri kasutamine"},"content":{"rendered":"\n
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6.1 Katse Buzzer<\/p>\n\n\n\n

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Komponeendid:<\/strong><\/p>\n\n\n\n

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\nhttps:\/\/www.tinkercad.com\/things\/5eXG6nsriJI-glorious-bojo\n<\/div><\/figure>\n\n\n
\n\/\/ Meloodiate m\u00e4ngimine.\n\n\/\/ K\u00e4sk Arduino tone() - noote tihedus.\n\n\/\/ Noodid:\n\n\/\/ note \tfrequency\n\n\/\/ c     262 Hz\n\n\/\/ d     294 Hz\n\n\/\/ e     330 Hz\n\n\/\/ f     349 Hz\n\n\/\/ g     392 Hz\n\n\/\/ a     440 Hz\n\n\/\/ b     494 Hz\n\n\/\/ C     523 Hz\n\nconst int buzzerPin = 9;\n\n\/\/ pikkus on nootide ja pausite koguste summa\n\nconst int songLength = 18;\n\nchar notes[] = "cdfda ag cdfdg gf "; \/\/ t\u00e4hed on noodid ja t\u00fchik on paus\n\n\/\/ R\u00fctmi seadistamine.\n\nint beats[] = {1,1,1,1,1,1,4,4,2,1,1,1,1,1,1,4,4,2};\n\n\/\/ "tempo" meloodia kiirus. Kui v\u00e4iksem tempo_ siis suurem kiirus.\n\nint tempo = 150;\n\nvoid setup() \n\n{\n\n  pinMode(buzzerPin, OUTPUT);\n\n}\n\nvoid loop() \n\n{\n\n  int i, duration;\n\n  for (i = 0; i &lt; songLength; i++)\n\n  {\n\n    duration = beats[i] * tempo; \n\n    if (notes[i] == ' ')          \/\/ kui noot puudub\n\n    {\n\n      delay(duration);          \n\n    }\n\n    else                         \n\n    {\n\n      tone(buzzerPin, frequency(notes[i]), duration);\n\n      delay(duration);          \n\n    }\n\n    delay(tempo\/10);              \/\/ v\u00e4ike paus nootide vahel\n\n  }\n\n  while(true){}\n\n}\n\nint frequency(char note) \n\n{\n\n  int i;\n\n  const int numNotes = 8;  \/\/ nootide kogus\n\n  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };\n\n  int frequencies[] = {262, 294, 330, 349, 392, 440, 494, 523};\n\n  \/\/ kui noot on olemas, siis tagastame selle tiheduse \n\n  for (i = 0; i &lt; numNotes; i++)  \n\n  {\n\n    if (names[i] == note)       \n\n    {\n\n      return(frequencies[i]);    \n\n    }\n\n  }\n\n  return(0); \n\n}\n<\/pre><\/div>\n\n\n
Kood m\u00e4ngib meloodiat, kasutades Arduino tone()<\/code> k\u00e4sku, et esitada erinevaid noote (nt c, d, e jne) vastava sagedusega. Noodid ja pausid on m\u00e4\u00e4ratud massiividesse notes[]<\/code> ja beats[]<\/code>. Kiirus (tempo) m\u00e4\u00e4rab, kui kiiresti noodid m\u00e4ngitakse. frequency()<\/code> funktsioon<\/strong> tagastab iga noodi sageduse. K\u00f5lar on \u00fchendatud pinni 9 kaudu. Kood m\u00e4ngib meloodiat ja kordab seda l\u00f5pmatuseni.<\/p>\n\n\n\n
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6.2 DHT11 andur<\/em><\/strong><\/p>\n\n\n\n
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\n#include &lt;DHT.h&gt;\n\n#define DHTPIN 2        \/\/ signaal Arduino D2-s\n#define DHTTYPE DHT22   \/\/ m\u00e4\u00e4rame \u00f5igeks t\u00fc\u00fcbiks DHT22\n\nDHT dht(DHTPIN, DHTTYPE);\n\nvoid setup() {\n  Serial.begin(9600);\n  dht.begin();\n}\n\nvoid loop() {\n  float temp = dht.readTemperature();\n  float hum = dht.readHumidity();\n\n  if (isnan(temp) || isnan(hum)) {\n    Serial.println("Anduri lugemine eba\u00f5nnestus!");\n    return;\n  }\n\n  Serial.print("Temperatuur: ");\n  Serial.print(temp);\n  Serial.print(" \u00b0C | Niiskus: ");\n  Serial.print(hum);\n  Serial.println(" %");\n\n  delay(2000);\n}\n<\/pre><\/div>\n\n\n
\nhttps:\/\/wokwi.com\/projects\/430475746125208577\n<\/div><\/figure>\n\n\n\n
DHT22 andur on \u00fchendatud Arduino D2 piniga (signaal), VCC \u2192 5V ja GND \u2192 GND. Kasutatakse DHT raamatukogu. Koodis m\u00e4\u00e4ratakse anduri t\u00fc\u00fcp DHT22 ja signaalipiniks D2. setup()<\/code><\/strong> algatab seriell\u00fchenduse ja alustab anduri t\u00f6\u00f6d. loop()<\/code><\/strong> loeb temperatuuri ja niiskuse v\u00e4\u00e4rtused, kuvades need iga 2 sekundi j\u00e4rel. Kui lugemine eba\u00f5nnestub, kuvatakse viga.<\/p>\n\n\n\n
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Table of Contents<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n