Comments on: ESP32 Pinout Reference: Which GPIO pins should you use?

By: Brian

Brian — Thu, 25 Jul 2024 11:28:08 +0000

In reply to Sara Santos.

Nevermind, it seems someone else has created one (inspired by this page!)

For anyone looking for a similar reference for the S3:

github.com/atomic14/esp32-s3-pinouts

By: Sara Santos

Sara Santos — Wed, 17 Jul 2024 15:58:43 +0000

In reply to MICHEL.

Hi.
Take a look at our I2C guide: https://randomnerdtutorials.com/esp32-i2c-communication-arduino-ide/
Regards
Sara

By: MICHEL

MICHEL — Fri, 12 Jul 2024 10:03:52 +0000

Hello Sara, many thanks for all your excellent informations.
I use an AZ-Delivery ESP32-WROOM-32 for a automation, I2C(0) for a LCD_I2c.
I now want to control others sensors with the second I2C by following exactly your recommandations (GPIO32 for SDA2, GPIO33 for SCL2)
The compile is OK, but the program no longer run.
Where could I look for a solution.

By: Mark

Mark — Sun, 23 Jun 2024 08:56:58 +0000

Could you please give me an example using the input-only pins? I’m running out of available pins and would like to know, for instance, if I can use them for the DIO0, DIO1 of LoRa Ra-02, and for the TX of my GPS module.
Any idea about that?

By: Ildar

Ildar — Fri, 26 Apr 2024 04:31:31 +0000

Hello.
Please, answer:
1. In what docs you have found about ESP32 GPIO14 PWM output on boot? It is correct, but I can’t find about it in Technical datasheet. All other pins behavour described in Strapping Pin section. As I understand GPIO14 is a part of JTAG and it is the reason of behavour, but Im not shure.
2. Have you information about ESP32 C6 pins with PWM output on boot?

By: Gilbert

Gilbert — Mon, 15 Apr 2024 12:03:43 +0000

In reply to Hitesh Kher. The matter is extensively discussed here: esp32.com/viewtopic.php?t=1864. The center pads provide additional GND connections and enhance the thermal stability of the ESP chip. In most cases you can just ignore the central pads.

By: Hitesh Kher

Hitesh Kher — Thu, 11 Apr 2024 10:48:48 +0000

In reply to Sara Santos. OK , Thank you Sara Santos.

By: Hitesh Kher

Hitesh Kher — Thu, 11 Apr 2024 10:46:01 +0000

I problem with some ESP32 GPIO pin ( not for all project)
I ( randomly) problem find with some GPIO pin as a use binary switch sensor
GPIO 16 GPIO 17 UART2
GPIO 19 GPIO 18 VSPI
SDA (GPIO 21)
SCL (GPIO 22)
Just share my experience, maybe help this information

By: Sara Santos

Sara Santos — Thu, 28 Mar 2024 11:24:51 +0000

In reply to Costi.

Thanks for sharing.
Regards,
Sara

By: Costi

Costi — Wed, 27 Mar 2024 12:42:53 +0000

In reply to Sara Santos. I have found someone who has done it (see end of post -> table with free to use pins): studiopieters.nl/esp32-s2-pinout/