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Upgrade an ESP8266 MatrixClock with automatic quartz drift correction, a stopwatch, web settings and Home Assistant notifications.

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MatrixClock: Improved Firmware & Drift Calibration

Steve Madden

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Upgrade a CH899 Wi-Fi clock with railway-style hands, automatic DST, dual NTP servers, web settings and second-hand battery saving.

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Chouchin-CH899: Improved Wi-Fi Clock Firmware

Steve Madden

Things I've Built

Chouchin-CH899 — Improved Firmware

Upgraded firmware for the HC32L130/TXW813 revision of the Chouchin-CH899 Wi-Fi clock movement, adding railway-style Hold&Start motion, second-hand battery saving, dual NTP servers, configurable daily updates and automatic DST changes. Firmware and flashing guide: https://github.com/maddenste/Chouchin-899-latest-revision

MatrixClock-Improved

Improved firmware for an ESP8266 LED matrix clock, adding automatic RTC drift calibration using NTP, web settings, OTA updates and Home Assistant integration. Firmware and installation guide: https://github.com/maddenste/MatrixClock-Improved

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