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Ultra-small ESP32-C3 development board

Overview

The ultra-compact ESP32-C3FH4 development board can be directly plugged into a mobile phone. Even in deep sleep mode, its power consumption, including LDO, is only 7uA.

The image above shows test data from 67 hours of testing, with the current temperature sent via ESP-Now every 20 seconds during deep sleep.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-27 01:35:12

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