Dries Buytaert
An ESP32-S3 development board is linked to an SHT41 temperature and humidity sensor and powered by a battery pack. For scale, a 2 Euro coin is included. The SHT41 sensor is roughly equivalent in size to the coin, and the ESP32-S3 board is about twice the coin's diameter.
An ESP32-S3 development board (middle) linked to a Sensirion SHT41 temperature and humidity sensor (left) and powered by a battery pack (right).

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