Verified Hardware

Don't waste money on incompatible parts. These are the exact modules we test and verify.

Microcontroller

ESP32-S3FH4R2

The dual-core powerhouse used in our precision clock. Features native USB and plenty of GPIOs.

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Timekeeping

DS3231 RTC Module

Extremely accurate I2C real-time clock with an integrated temperature-compensated crystal oscillator.

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Display

0.96" I2C OLED

128x64 pixels of crisp blue/white text. Perfect for the CircuitHub display tutorials.

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