This is a birthday gift for my wife, which based on the idea of Chan to make a SD card music player. The circuit simply consists of an Atiny85 microcontroller, SD card slot, low-dropout voltage regulator, 3.7V Lipo battery, battery charger IC and few resistors and caps. The circuit board can be nicely fitted inside a small box, which is served as a base of the flower, and the “flower” is actually the speaker.
Flower music player
The flower music player is playing:
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