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30 lines
922 B
Python
30 lines
922 B
Python
# This work is licensed under the MIT license.
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# Copyright (c) 2013-2025 OpenMV LLC. All rights reserved.
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# https://github.com/openmv/openmv/blob/master/LICENSE
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#
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# Pure Thermal Buzzer Example Script
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#
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# Thanks for buying the Pure Thermal OpenMV! This is a simple example
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# script showing off how to control the buzzer onboard.
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from pyb import Timer, Pin
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import time
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# Timer2, Channel2
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tim2 = Timer(2, freq=4000)
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ch2 = tim2.channel(2, Timer.PWM, pin=Pin("BUZZER"), pulse_width_percent=50)
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# Play a Catchy Jingle by controlling the buzzer frequency and duty cycle
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# using a lookup table of freq and duty cycle values.
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jingle = [
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(1000, 50), (1200, 60), (1400, 70), (1600, 80),
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(1800, 90), (2000, 100), (2200, 90), (2400, 80),
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(2600, 70), (2800, 60), (3000, 50), (3200, 40),
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]
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while True:
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for freq, duty in jingle:
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tim2.freq(freq)
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ch2.pulse_width_percent(duty)
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time.sleep_ms(200)
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