Comments on: ESP32 Pinout Reference: Which GPIO pins should you use? https://randomnerdtutorials.com/esp32-pinout-reference-gpios/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Tue, 25 Nov 2025 14:19:02 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Sara Santos https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1127393 Tue, 25 Nov 2025 14:19:02 +0000 https://randomnerdtutorials.com/?p=72084#comment-1127393 In reply to Techno.

We have this one for the ESP32S3 DevKitC:
https://randomnerdtutorials.com/esp32-s3-devkitc-pinout-guide/

Regards,
Sara

]]> By: Techno https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1127361 Tue, 25 Nov 2025 11:31:24 +0000 https://randomnerdtutorials.com/?p=72084#comment-1127361 Please create such reference for the newer chips too !
S2/S3/C3/C6/H2 !

]]> By: reza https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1092058 Tue, 02 Sep 2025 04:26:49 +0000 https://randomnerdtutorials.com/?p=72084#comment-1092058 GPIO 0 (must be LOW to enter boot mode)
flashing mode or boot mode?
heloo my friend.

]]> By: Luís https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1088542 Fri, 29 Aug 2025 22:16:55 +0000 https://randomnerdtutorials.com/?p=72084#comment-1088542 Hi,
Congratulations, your site is a global reference in this area.
Anyway, as a newbie, let me give you one sugestion:
I know there are ESP chips, boards and modules, each one with diferent pin references (ok, the chips are an exception), but I got confused with the pin numbers in the first image of the page .. took me one hour to figure out that gray numbers are the pin chip number and not the pin module number .. maybe it’s worth to put also the pin module number in that image, like this:
mathaelectronics.com/esp32-pinout-esp-wroom-32-pinout/

Regards and I wish you continue the excelent job,

Luís

]]> By: Dr Quark https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1031217 Sat, 26 Apr 2025 22:34:40 +0000 https://randomnerdtutorials.com/?p=72084#comment-1031217 In reply to Sara Santos.

Sara,
My error. I had pin 2 tied to the DIO0 pin on a LORA board. Unplugged, it works fine.

BTW, I’m using the same board that is pictured in this article. DOIT DEVKIT V1

]]> By: Sara Santos https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1031062 Sat, 26 Apr 2025 10:40:07 +0000 https://randomnerdtutorials.com/?p=72084#comment-1031062 In reply to Dr Quark.

Hi.
On most ESP32 board models is on GPIO 2.
But, if you have a very specific model, it can be on a different GPIO.
Do you have a link for the exact board that you have?
Regards,
Sara

]]> By: Dr Quark https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1030870 Fri, 25 Apr 2025 23:35:00 +0000 https://randomnerdtutorials.com/?p=72084#comment-1030870 I’m using the DEVKIT V1 and can’t get the on-board LED to flash. I’ve set pin 2 to OUTPUT and I’m writing it HIGH for 200 msec, then LOW for 5000 msec.

I’ve seen other documents that say the LED is on pin 13 and pin 5. Where is it?

]]> By: K Suryanarayana https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1030016 Wed, 23 Apr 2025 10:00:51 +0000 https://randomnerdtutorials.com/?p=72084#comment-1030016 In reply to Sara Santos.

HIii
I have esp 32 (wroom) want to connect four mpu6050 sensors for three it is working fine but for the fourth one not working properly,
Can you help me

]]> By: Sara Santos https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1025501 Thu, 10 Apr 2025 09:28:01 +0000 https://randomnerdtutorials.com/?p=72084#comment-1025501 In reply to Mike.

No.
You must use another pin instead of GPIO 26.
Regards,
Sara

]]> By: Mike https://randomnerdtutorials.com/esp32-pinout-reference-gpios/#comment-1025189 Wed, 09 Apr 2025 10:05:17 +0000 https://randomnerdtutorials.com/?p=72084#comment-1025189 In reply to Sara Santos.

Oh! in that case I can’t use DAC1 (GPIO25) or DAC2 (GPIO26) to add sound to my project with Wi-Fi, can I?
Regards,
Mike

]]>