- First we declare the functions for fading in and out the LEDs
- With the function "detectTwoClapsInTimeWindow" we make sure, that the claps are at least 300ms apart from each other to get counted.
- In the loop:
- if the second clap follows within 1000ms the LEDs will be turned on and/or off in three different ways. And then the clap counter starts at zero.
- otherwise nothing happens and the clap counter starts at zero.
- This DIY nightlight is a practical example of using transistors with ATtinys since we address 4 LEDs with one GPIO, with max 40mA per pin.
- The light is switched on and off from the hardware side with a built-in reed switch and a magnet.
- The microphone functions as a sound detector so you can change between three colors by clapping.
- We added 100 Ω resistors for the LEDs and 1k Ω for the transistor (on the base).
- The transistors are a NPN Type with 100mA IC
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