liebman/espntpserver

GPS fueled ESP8266 based NTP Server

ESPNTPServer

GPS fueled ESP8266 based NTP Server

src Contains the code for the NTP Server

eagle contains the schematic and board designs in Eagle cad.

enclosure contains the STL files for the enclosure.

This is designed around this GPS module but any module with standard NMEA output and a pult per second signal will work if you redesign the board or use an adapter.

I also used this display module. You can use others but be careful with the power polarity, I have modules where VCC and ground pins are in a different order.

espntpserver's Issues

GPS Module link

The link to the GPS module goes to an amazon 404 page.

ESP32 version?

Did you create an ESP32 version of this code? The following link possibly shows your code running on an ESP32.

Thank you for sharing your code.

https://esp8266hints.wordpress.com/2018/03/31/esp8266-gps-ntp-server-in-the-making/comment-page-1/?unapproved=2409&moderation-hash=14c5f7423b69f0b38f1ab8c807d68cfa#respond

Question

Hi liebman,
I want to build your NTPServer.
I flashed it with the Arduino IDE 1.8.5.
In AP Mode it works but after config the wifi i get no access to the ESP.
I found it in the LAN (ping is ok) but if i connect with a Browser i get no Page.
Is this correct?
I have a NodeMCU with NEO6 conncted on TX/RX, PPS on D6(GPIO12) and 5V for the NEO6.
A Display is not connectet.
Do you have an idea whats the Problem is?

Best regards

README GPS Link

The link to the GPS module in README leads to a 404.
https://www.amazon.com/gp/product/B075DD5746/

Defaults to config too quickly after wifi connection loss

Hi Liebman,

Great project, works great. I have encountered an issue in my environment that could possibly enhance the project for others. I am looking to use this as a highly available NTP server for my environment.

My wifi reboots weekly in the middle of the night. When this happens, the ESP detects the loss and before the wifi is reconnected the ESP goes to broadcasting it's own SSID for config mode. This takes the NTP server offline until I manually restart it. Is there a way to incorporate a configurable delay in seconds for the wifi reconnect when there is an existing config in place. Or another idea is a configurable parameter that just keeps attempting reconnects and blocks config mode from being entered unless the button is pressed.

Thanks for considering these suggestions.

Query

Hello
thank you for such an awesome project but i have a query regarding RTC module (DS3231)
is it possible to add RTC module? i need a simple local NTP server for my projects to keep time up to date
it works very well with GPS but sometime i don't get proper signal with GPS due to bad weather and after electricity cut-off my all devices looses time :/

Problem compiling in Arduino IDE

Hi liebman.

I'm trying to compile you ESPNTPServer via Arduino IDE 1.8.1 (have maked an empty ESPNTPServer.ino file)
But I'm stranding on this error, in the ESPNTPServer.cpp:

sketch\ESPNTPServer.cpp: In function 'void logTimeFirst(DLogBuffer&, DLogLevel)':

ESPNTPServer.cpp:49: error: aggregate 'timeval tv' has incomplete type and cannot be defined

 struct timeval tv;

                ^

sketch\ESPNTPServer.cpp: In function 'void loop()':

ESPNTPServer.cpp:262: error: aggregate 'timeval tv' has incomplete type and cannot be defined

 struct timeval tv;

                ^

exit status 1
aggregate 'timeval tv' has incomplete type and cannot be defined

Best regards