![]() You can also use a Common Cathode 7-segment display, just adjust the DISPLAY_TYPE constant in config.h, and switch to NPN transistors.You can change the values of the TONES array, TONE_TIME and TONE_SPACING to customize the alarm and play different tones and melodies. AlarmTone - The AlarmTone class play the alarm sound.It uses the RTClib library to communicate with the RTC chip and track time. Clock - The Clock class manages the current time and the alarm state machine.It manages the user interface: the 7-segment display and the buttons. ![]()
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