---
title: "Web Interface with NTP server"
url: "https://maker.wiznet.io/teju/projects/web-interface-with-ntp-server/"
markdown_url: "https://maker.wiznet.io/teju/projects/web-interface-with-ntp-server/md"
type: "UCC: User Created Content"
author: "Mark Haller"
author_url: "https://www.facebook.com/integrasparks/videos/10221042932045490"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Mark Haller"
original_url: "https://www.facebook.com/integrasparks/videos/10221042932045490"
published: "2022-09-01"
language: "en"
hardware: ["Arduino Ethernet Shield"]
likes: 4
views: 1802
comments: 1
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Web Interface with NTP server

> The RTC is a generic module and the timelib is used however I have control of the updates from the NPT

Original author: Mark Haller (source: https://www.facebook.com/integrasparks/videos/10221042932045490)

## Components

- **Arduino Ethernet Shield** x 1 ([docs](https://docs.arduino.cc/retired/shields/arduino-ethernet-shield-without-poe-module))
- Software: **Arduino IDE** ([docs](https://www.arduino.cc/en/software))

## Article

A little share..... Working on a project that may never se the light of day but is a good learning platform. My goal was to see how reliable this was. The current version is wifi only based on an esp8266. That seems to be solid. However I was asked if it could log data (currently it just sends an email).

![](https://maker.wiznet.io/upload/ckeditor5/958407286%5F1662051418%2EPNG)

Video at one point says WiFi card when I meant to say ethernet. Oops.

Being retired I though it would be fun, then I was also asked if I could send RS232 messages.... That turned out to be fairly straightforward....... I had a lot of issues with reliability... First the Web interface was a bit unreliable.... However before looking to deep I put a large capacitor on the power rail on a little demi hat built so simplify wiring and holds the pull ups and some zener protection diodes.

The RTC is a generic module and the timelib is used however I have control of the updates from the NPT. If a synch does not work it pickles another server and tries again. I seem to have more miss updates with the ethernet interface but generally it does a good job.. The test interface uses an 8266 and seems to keep very good time without an RTC. I am still learning about how the libraries work

....

The main changes to the Web interface SW were to take care to call ethernet maintain and to allow a bit more time for the server to update data.

The SD card is more reliable with the larger capacitor from what I can tell however it still sometimes does not read unless ejected and re inserted. I put in a reset strategy and it times out so it may be related to the card?? But I only got that from a post somewhere.

There is a lot going on but very happy with the Mega it has lots of i/o and serial channels..

I did try and port this all onto an 8266 but found myself having all sorts of issues as I needed a ethernet module. For some reason I could not get two Spi units to work at the same time..... But was fighting for i/o anyhow.

The ethernet card is a W5100 based unit as an fyi.

Video :

<https://www.facebook.com/integrasparks/videos/10221042932045490>

---

Source: https://maker.wiznet.io/teju/projects/web-interface-with-ntp-server/