Content for NTP

NTP

The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware. NTP is intended to synchronize all participating computers to within a few milliseconds of Coordinated Universal Time (UTC). It uses the intersection algorithm, a modified version of Marzullo's algorithm, to select accurate time servers and is designed to mitigate the effects of variable network latency. NTP can usually maintain time to within tens of milliseconds over the public Internet, and can achieve better than one millisecond accuracy in local area networks under ideal conditions. Asymmetric routes and network congestion can cause errors of 100 ms or more.

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Project  NTP Based Digital Clock Panel Driver

NTP Based Digital Clock Panel Driver

“Highly accurate, Ethernet base, 7-segment clock driver with built-in NTP client. This project introduces an open-source, ATmega328 based, configurable NTP clock with a 2.3-inch, 7-segment display driver. This clock automatically obtains time from the configured NTP server and updates …

Project  Building a Raspberry PI Stratum 1 NTP Server

Building a Raspberry PI Stratum 1 NTP Server

“After the nice reception my last article on NTP got, I decided that it was about time I pulled a project off the shelf from a few years ago and get a stratum 1 NTP server running on a Raspberry …

Project  LoRa IOT Home Environment Monitoring System

LoRa IOT Home Environment Monitoring System

“The LoRa IOT Home Environmental Monitoring System consists of an Arduino Mega based IOT-to-Internet gateway and Arduino Feather based remote stations with environmental sensors. The remote stations communicate wirelessly with the gateway using LoRa radios. The system enables a …

Project  ESP8266 based NTP Clock

ESP8266 based NTP Clock

“A little over a year ago, the ESP8266 WiFi SoC started getting attention and quickly became a little chip of wonder. On a fully self-contained breakout board with this chip, a complete WiFi enabled controller is well under $5! It …

Project  The Raspberry Pi as a Stratum-1 NTP Server

The Raspberry Pi as a Stratum-1 NTP Server

“As an experiment, I purchased one of the low-cost credit-card-size Raspberry Pi computers, and have configured it to run NTP (Network Time Protocol). I have also used this board with a GPS receiver with pulse per second (PPS) output to …