The Network Time Protocol suite, refactored GitHub is a mirror of https://gitlab.com/NTPsec/ntpsec

An easy to install and configure GPS network time server (SNTP)

Mirror of https://gitlab.com/chrony/chrony

An IoT clock designed for children

NATO Clock — WiFi-enabled ESP8266 LED matrix clock with DS1307 RTC. Stores time in UTC, auto-syncs via NTP, and switches between CET/CEST at 02:00/03:00 according to EU DST rules. Includes OTA updates and WiFi setup portal.

Alternative multiplatform openntpd

ESP8266 IoT datalogger with DHT22 sensor, OLED display, WiFi, MQTT and SPIFFS backup

esp32 relay control with sync ntp every hour and web page configable

The Network Time Protocol suite, refactored GitHub is a mirror of https://gitlab.com/NTPsec/ntpsec

A web-synchronized clock/calendar based on the AVT2632 kit, ATtiny4313, and ENC28J60

The Colored Wheel Clock sketch is a colorfull clock realized with an ESP32-C6 microcontroller and a GC9A01 round display.

An ESP-IDF project for ESP32 that joins Wi-Fi, syncs time via SNTP (immediate mode), then displays a clean 12-hour clock: single-line UART with seconds and a TM1637 4-digit HH:MM with a blinking colon. Includes a minimal TM1637 driver, configurable pins/servers, and defaults to Asia/Kolkata (IST).

HTTP Time protocol

VFD clock synced via the Internet, powered by ESP32

IoT networking utilities for RT-Thread. Such as: ping, tftp, iperf, netio, ntp, telnet and tcpdump.

udp/tcp/ip stack experimentation

PPS input on macOS for chrony

Tiny NTP Server with Esp32

Firmware for the Waveshare's Pico RGB Matrix device

Indoor Meteo station, ESP32 based