The Arduino Nano ESP32 is an 18 x 45 mm Nano form factor board whose radio section is a u-blox NORA-W106-10B module with the ESP32-S3 inside — the same chip family as the ESP32-S3-DevKitC-1, packaged for the Arduino Nano pinout instead of a Espressif evaluation layout. One USB-C port powers, flashes and talks serial; the board runs at 3.3 V. This page renders the MCUID data record: the complete 2 x 15 header mapping, storage split between board and module, and every published field tied to a fixed official source.
Two facts set this board apart on this site:
- The pins you see are not the GPIO numbers the chip uses. The silkscreen follows the classic Nano numbering (D0-D13, A0-A7); the native ESP32-S3 GPIO behind each pin is different (D2 is GPIO5, D8 is GPIO17...). The pin numbering guide walks through the two schemes and the IDE switch that selects between them.
- The storage split differs from the Espressif pattern. The 16 MB flash is a chip on the board (U3), not inside the module; the 8 MB PSRAM is inside the NORA-W106 module. On WROOM/WROVER boards both live in the module.
Start developing
- Bring-up — Arduino's official getting-started guide covers IDE install and the board package (Arduino ESP32 core 2.x).
- Pin numbering — Dn vs GPIO on this board before wiring anything; the official Nano↔ESP32-S3 pin map (fixed commit
cb938e96) holds the full Dn/An ↔ GPIO table. - Chip capabilities and limits — the ESP32-S3 chip page separates what the chip provides from what this board wires up.
- Official references — the Arduino board page and the datasheet PDF.
Power specifics worth knowing
- VIN accepts 6-21 V; the on-board MP2322GQH regulator steps it down to 3.3 V (VIN rating details in the datasheet power section).
- There is no 5 V pin. Only VBUS supplies 5 V, directly from the USB-C power source — and VBUS is not driven while you power the board through VIN. A 5 V peripheral therefore requires USB power or its own supply.
- I/O is at 3.3 V; the 3.3 V / 5 V signals guide explains why that is not negotiable by software.
Recovery without external hardware
If a sketch locks the board, the documented recovery is to double-tap the reset button right after power-up — the board enters its bootloader and accepts a flash over USB again.
Same chip, different board
Coming from the ESP32-S3-DevKitC-1? Same chip family, very different wiring: the DevKitC exposes the module's native GPIO numbers on its headers and offers a module family choice; this board hides them behind the Nano silkscreen and solders one fixed module. The pin numbers concept guide disentangles the layers.