DIY doorbell(s)

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DIY_doorbell.jpg
From the MAKE Flickr pool

Ryan made this doorbell unit with customizable melodies –

My homebrew doorbell circuit. ATMEGA8 with 2 L293D push/pull driver chips running each of 12 solenoid-driven christmas bells. Songs are stored in EEPROM, and selected randomly when the doorbell is rung

Ringtones aren’t just for cellphones anymore! – Link

For more info check out his helpful video explanation of the project – Link

Related:

Wine glass door bell – Link

WAV_doorbell.jpg
The doorbell that plays WAVs – Link

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