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- เผยแพร่เมื่อ 25 ก.ย. 2022
- Control ESP-01 relay module from web browser, 09/27/2020
ESP8266 NodeMCU Relay Module - Control AC Appliances (Web Server)
- randomnerdtutorials.com/esp82...
ESP01/01S RELAY MODULE TUTORIAL
- www.instructables.com/ESP0101...
Example sketch on Google Drive:
- drive.google.com/file/d/1AgGK...
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Hello, I want to ask whether I can control this ESP-01 module using another network and in a place far from the ESP-01 module at home which is connected to WiFi.
Compilation error: 'D3' was not declared in this scope.
Please guide
Can you add webserver code for 4 relay
?
Thanks forked fine
it will not work with 4g and 5g wifi so try to use old hotspot (or wifi)
but Thanks man
When suddenly the electric power supply goes out and at that time the status of the relay module is ON. Then the electric power supply turns ON again, does the status of the relay module remain ON?
No, the relay will start with the default value. In this case it is off.
You can set the default to on if you like too. Just replace the relay setting in the setup() with digitalWrite(Relay1, HIGH);
It its possible to persist the state of the relay. But it require to write the relay state to EEPROM. I use it with the regular ESP8266. I've tried with the ESP-01, but have not succeed. I guest there might be no EEPROM or the read-write is different method.
@@cyberello Thank you for updating the information about the differences between ESP8266 and ESP-01. (For the ESP-01) Is it possible to add a simple backup power (rechargeable battery) to maintain the last state? Possible with 3 volt LIR2032 (CR2032) coin button battery
Yes, I think it is possible to use the back up battery. But I never tried it before.
Need add button at GPIO4 for manually switching
GPIO4 is Pin# 4 or D2
In the sketch I use D3 for Relay1 in line# 12. If you need more Pin or change to GPIO4 you can do it there.
int Relay1 = D2; // For replace with GPIO4 or
int Relay1 = D3;
int Relay2 = D2; // For adding GPIO4
Then set up the Relay for output.
If you need another button on the page you can add it in the BUTTONPLACEHOLDER section. 😊
@@cyberello You did not understand. I wanted to add a physical button to control directly in case of network failure.
Oh, sorry about that.
In this case you will need to set buttons for input as:
int button = D2; // For adding GPIO4
Then in setup():
pinMode(button, INPUT);
Then add button reading in loop()
int buttonPush = digitalRead(button);
if (buttonPush == 1) { // This will set trigger On/Off value for relay
digitalWrite(Relay1, !digitalRead(Relay1));
digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
}
I did not test this sketch yet. It should work fine. If not please let me know. 😊
More information from this video:
th-cam.com/video/Af0nZ6xYnIE/w-d-xo.html
how to shutdown AP??
What do you mean by AP? WiFi access point? In that case, the module is a WiFi client not acting like access point. So, you will need to know the module IP address.
The module is running it's own tiny internal web server. Then you can control it using web browser and open the IP address of the module.
Is it the anwser you are looking for?
Nice vid.
Using Arduino IDE 2.0 I see. How do you like it?
Thank you very much.
I like it. The UI is more modernized and improve the flow of the development process. Especially selecting board and connections.
Also the integration of the serial output log window is easy to use.
I hope you will like it too. 😂
D1 or D3 does not work, shows error 😥
I solved it with 0... 👍
@@marlonjaheraldanaperez4244 Great, thank you for sharing. 😊
I can turn on a light bulb remotely, I can turn on a light bulb from my house, from my work
Yess
The code did not work
Let me help. Please tell me more about the error you have or how you do.
There are some possibility that the code might not work for your environment. First guest is the WiFi connection. Then the IP is change some how.
I use it on every lights and fans in my house. We can fix it. 😊
@@cyberello I uploaded the code successfully but the serial monitor did not show the IP address
@@cyberello I will be so glad if you can help out
I think the problem is the WiFi connection.
Please make sure that you connect it to 2.4G WiFi not 5G.
Then please check the line# 6 and 7.
You need to use your WiFi name and password. In my case I change it to
6 #define STASSID "cyberello_wifi"
7 #define STAPSK "cyberello_password"
You can also check the line 184 to 187. It will stuck in this loop in case there is no WiFi connection.
I hope this might help. 😊
@@cyberello change the name but the WiFi is not showing on my phone
Thanks for your time I will try some other methods too