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Arduino-powered alarm clock
by pienjo
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An alarm clock I made a while ago. This serves just for inspiration; the electronics were mostly cobbled together on perfboard; reproducing it might be hard...
Powered by an Arduino Nano Pro, an SI4702 FM radio (connected via level shifters), a DS1307 real-time clock and a small audio amplifier. The display is based on four MAX7219 LED matrix moduless from aliexpress.
The left- and right hand side of the panel has press-fit holes for 4 small 28mm speakers. The display modules are mounted
Powered by an Arduino Nano Pro, an SI4702 FM radio (connected via level shifters), a DS1307 real-time clock and a small audio amplifier. The display is based on four MAX7219 LED matrix moduless from aliexpress.
The left- and right hand side of the panel has press-fit holes for 4 small 28mm speakers. The display modules are mounted
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