I am confused with pins on my ESP32-S3-WROOM1 N16R8 44pin

gray_b
Posts: 1
Joined: Tue Sep 09, 2025 2:45 pm

I am confused with pins on my ESP32-S3-WROOM1 N16R8 44pin

Postby gray_b » Mon Dec 01, 2025 7:28 pm

I have a ESP32-S3-WROOM1 N16R8 44pin that I am just getting around to using. But I am very confused as to what pins or IO are available to me to use?

The one I have is listed at https://www.aliexpress.com/item/1005007929835630.html

I have a number of different IO pin listings that seem to conflict with each other.

I need
1 analogue inputs
12 digtal outputs and
2 digital inputs

I have the one included in datasheet from espressif, but I find it confusing

Does anybody have a reliable list.

MicroController
Posts: 2661
Joined: Mon Oct 17, 2022 7:38 pm
Location: Europe, Germany

Re: I am confused with pins on my ESP32-S3-WROOM1 N16R8 44pin

Postby MicroController » Thu Dec 04, 2025 8:50 am

That board may be a copy of Espressif's DevKit, which has a nice overview here.
With the S3, you want to steer clear of GPIO26-GPIO32 (probably also GPIO33-GPIO37) as they're used for internal flash and PSRAM.

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