Image: reddit.com · I Built a $20 ESP32 Device That Alerts Me When Claude Code Needs My Input
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A $20 ESP32 buzzer that plays a tune when Claude Code needs input
An ESP32 with an OLED screen and buzzer, written in MicroPython with Claude Code in about three hours, watches Claude Code's status and plays melodies when it is waiting.
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From a short post by the maker, so the details are as they tell them.