In this ESP32 project, I have shown how to make an ESP32 internal RTC timer control relay without any external RTC module. The ESP32 will get the time from NTP server initially, then it use the internal RTC to control the relay.
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I have covered the following topics in this ESP32 RTC project tutorial:
02:38 Required components of ESP32 project.
03:16 Circuit of the ESP32 RTC control relay.
04:14 Source Code for the ESP32 internal Real Time Clock.
04:36 How to get the NTP server for your country.
07:28 Control the relay using ESP32 internal RTC Timer.
Required Components for the ESP32 internet of things project.
1. ESP32 Devkit V1.
2. 1-channel 5V SPDT Relay Module.
3. Switch
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Important Link:
NTP Server link: [ Ссылка ]
Download the Code for the ESP32 RTC project:
[ Ссылка ]
Important points:
1. You don't need any external RTC module like DS3231.
2. Initially ESP32 need WiFi, just to fetch the current time from NTP server.
3. You have to update the NTP server according to your country.
4. Mention the ON/OFF time in 24H format (as shown).
5. Please take proper safety precautions while working with high voltages.
During the ESP32 tutorial video, I explained all the steps to make this ESP32 home automation system, and how to fetch data from NTP server.
In this ESP32 project, you can control the relay using ESP32 internal RTC, so you don't need Wi-Fi connection all the time.
Here the switch is connected across the COM and NO terminals of the relay. In upcoming videos I will add more features to this ESP32 timer project.
#esp32 #homeautomation #ntp
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WARNING:
This video is for demonstration and educational purposes only.
Each demonstration presents risks and hazards that must be fully understood before attempting.
And should be performed only by professionals
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