Hello, I need a few more details.

• Can you post a link to the board that you bought?
• What’s the exact board name?
• Or are you using an ESP32 bare chip?
• What’s the error that you see? Can you copy and paste the error message?

Thanks!

I have bought it from HILETGO from amazon. The error is”error compiling for board DOIT ESP32 DEVKIT V1″
Thanks for your purchasing, Order ID: 112-5425123-1255405

B0718T232Z
HiLetgo ESP-WROOM-32 ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Processor Integrated with Antenna RF AMP Filter AP STA for Arduino IDE

I played with board manager. I kept changing the board configuration until I found one that compiled. The board that worked for me is “Onehorse ESP32 Dev module.

Thanks for providing those details. That’s weird… The “DO IT ESP32 DEVKIT V1” option should work… I’m not sure if it was a problem with the code or something. It should also always compile with the generic option “ESP32 Dev Module”…

Sorry, The Program verify/compile but, it did not upload to the board.  I noticed that the back of my board label NODEMCU ESP-32S v1.1,  Could the seller has sent me the wrong board.

I bought two new board from the company you referred “Geekcreit®. Doit ESP32 devkit. hopefully, I will continue with the course.

Hello again, that module (“NODEMCU ESP-32S v1.1”) should work with our courses just fine… You just need to select the Board “Node32s” or even with the generic option “ESP32 Dev Module” you should be able to compile the examples in our course.

It finally worked with DOIT ESP32 DEVKIT.

I’m glad it’s working now. I’m not sure what happened before though… I’ll mark this thread as “resolved”. If you have more question, you can post a new question: https://rntlab.com/ask-question/

My PIR’s VCC takes 5volts and output 3 volts.  My ESP32 has a 5 volts in it. If I plug my ESP to USB, will I be able to use 5 volts from the ESP to supply power to Vcc of the PIR? 

Is there a way The PIR motion detector program can be written without interrupt and Serial command that send information to the serial monitor?

• Yes, if you have a PIR sensor that operates at 5V, you can power it using the 5V (ESP Vin pin).
• The best way to detect motion is using interrupts… Otherwise, you would to need to use a digitalRead() and constantly read the current GPIO value to detect any changes… 

I am in module4. I am doing the ESP32 Web Server.When I checked my IP Address in serial monitor, I could not find it. I saw my SSID which is Hello_IoT,  I saw a number like”11:19:19.271.”  but when I went to my Web browser I entered that number, my LED did not turn on.  I need help.

I’m not sure exactly what you mean and I need a few more details from you.

• Did you enter your SSID and password (the SSID is your network name and the password that you use to connect via Wi-Fi) in your code?
• What exactly do you see in your Arduino IDE serial monitor? Can you copy and paste here?
• What’s the web browser that you’re using?

Regards,
Rui

Question: Do I have to use the same network name and password I use at my house?
This is what I did, I make a name for my SSID and Password.  I copied your code to my Arduino IDE but, when I upload the code to the board, I did not see any IP Address in serial monitor.
// Replace with your network credentials
const char* ssid = “HelloWorld”;
const char* password = “12345678”;

I have a switch connected to GPIO0, When the switch close I want to see a color button change on the internet. May you send me some codes that can help?

Please

Sorry for taking so long to get back to you, but I was without internet for the last couple of days during a trip. I’ll mark this thread as closed, please continue the conversation in the new thread: https://rntlab.com/question/esp32-web-server-5/