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  <title>[elecena] Adafruit Piezo Buzzer - zmiany ceny</title>
  <description>This compact piezo buzzer excels at producing beeps, tones, and alerts with surprising volume. It's designed for simplicity and efficiency, operating optimally with a 3-30V peak-to-peak square wave.To function effectively, connect one pin to ground and the other to an output from a timer or microcontroller. For maximum volume, aim for around 4 KHz, though it performs admirably between 2 KHz and 10 KHz.For situations demanding extra loudness, utilize both pins with a microcontroller, swapping pin states for a 'differential drive' to achieve double the volume. Ideal for creating clear and attention-grabbing sound signals.</description>
  <item>
   <title>Adafruit Piezo Buzzer - 2.00 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2025-10-30</pubDate>
  </item>
  <item>
   <title>Adafruit Piezo Buzzer - 1.75 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2025-10-31</pubDate>
  </item>
  <item>
   <title>Adafruit Piezo Buzzer - 2.00 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2025-12-19</pubDate>
  </item>
  <item>
   <title>Adafruit Piezo Buzzer - 1.75 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2026-01-23</pubDate>
  </item>
  <item>
   <title>Adafruit Piezo Buzzer - 2.00 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2026-01-31</pubDate>
  </item>
  <item>
   <title>Adafruit Piezo Buzzer - 2.25 EUR</title>
   <link>https://elecena.pl/product/29463288/adafruit-piezo-buzzer</link>
   <pubDate>2026-04-13</pubDate>
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