Nano ESP32

Specifications

Notes

• The ESP32-S3 sits inside a u-blox NORA-W106-10B module (not an Espressif module); the record references the soc directly because the catalog has no NORA-W106 module record. The 8 MB octal-SPI PSRAM is embedded in the NORA-W106-10B; the 16 MB flash is an external GD25B128EWIGR (U3) on the board.
• Arduino's datasheet (SKU ABX00083) describes the board "with and without headers".
• io.gpio_pins is the raw header-exposed set from Arduino's full pinout (SKU ABX00083): D0-D13 = GPIO44, 43, 5, 6, 7, 8, 9, 10, 17, 18, 21, 38, 47, 48; A0-A7 = GPIO1, 2, 3, 4, 11, 12, 13, 14; B0 = GPIO46 and B1 = GPIO0. D13 (GPIO48) is LED_BUILTIN.
• The RGB LED is red GPIO46, green GPIO0, blue GPIO45; the red (GPIO46) and green (GPIO0) LED pins are also connected to the B0 and B1 header pins. Arduino notes some boards from the first limited production batch have an RGB LED with the green and blue pins inverted (full pinout, page 3).
• D1/TX0 has a 499 ohm series resistor, which limits the current that pin can drive (Arduino full pinout, page 3).
• Power: VIN accepts 6-21 V, USB-C 4.8-5.5 V; logic is 3.3 V and there is no 5 V pin -- VBUS carries 5 V only when the board is powered over USB (datasheet §3, §11).
• Board recovery: Arduino's bootloader is entered by double-tapping the reset button right after power-up (datasheet §14.5).