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We've got this cheap egg cooker that plays the loudest, most terrifying alarm you've ever heard when it's done cooking. My wife requested that I make it "less aggressive" so I hacked it into the most gentle egg cooker of ALL TIME

(warning: probably loud)

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in reply to Guy Dupont

Guy Dupont
Guy Dupont
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These are such beautifully simple machines. It's got a heating element, a fuse and an alarm. when the water evaporates, the plate gets hot enough to open the fuse. The power is then rerouted through the alarm. So you control cooking length simply by adding more/less water!
in reply to Guy Dupont

Guy Dupont
Guy Dupont
• •
All I did was replace the alarm (which took 120V AC directly) with a little AC-DC module (basically what's inside a phone charger) and so it sends out 5V DC when its done cooking. I'm knocking it down to 3.3 and hooking it up directly to the the music box.
120V AC -> 5V DC module hooked up to a LM1117T-3.3 voltage regulator, whose output is hooked up to an electromechanical music box module.
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