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Flip phone alarm
I built this for a guy that runs heavy equipment and owned a flip phone.  He couldn't hear the phone because the machinery was too loud and couldn't feel it vibrate because of the machinery. He asked me to make something that would alert him when he was working so he wouldn't keep missing important calls.
Flip phone alarm
Flip phone alarm going off.
Picture
Close up of the prototype board that drives the device.
  • YellowFox
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  • About Us