Exact time (NTP) for your ESP/Arduino without RTC module
In this video, I would like to build simple clocks using the ESP (Wemos Lolin D32 Pro) internal timer and regular NTP server queries to provide a relatively accurate time. The first part uses a simple query whose result is parsed and returned to serial output. The second demo already shows how to use simple TFT panel clocks to display the signal strength for the Wifi connection that is required to periodically synchronize the time.
If you want to build a similar project, source codes are available here:
https://gist.github.com/xxlukas42/48f...
(the code also contains the fonts used in the project)
Where to buy:
basic ESP32:
http://s.click.aliexpress.com/e/cooRTElE
Lolin32 Lite:
http://s.click.aliexpress.com/e/_d7obKV8
Lolin D32 Pro (used in video):
https://goo.gl/tTjZA2
TFT shield/display
https://www.aliexpress.com/item/32919...
Can be combined with this RTC module, which will retain time after disconnecting of power supply:
https://s.click.aliexpress.com/e/_DnL...
Libraries:
https://learn.adafruit.com/adafruit-g...
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#plukas #esp32 #lolin32