Arduino Nano ESP32 simulator, an ESP32-S3 on the Nano outline
The Nano ESP32 is an ESP32-S3, of which one Xtensa LX7 core runs here at 240 MHz, on the classic Nano’s outline with the Nano’s pin names. Its orange LED is on D13 and its RGB LED lights each color when its pin is LOW. Mokxi builds it with GPIO pin numbers, and WiFi joins a simulated network.
- 6peripheral areas modeled
- 1project ready to run
- Real timeon your own machine
What is modeled
Taken from the board's own contract document and put in plain words, with what is missing beside it.
Modeled
- Core
- One Xtensa LX7 core at 240 MHz, the DevKitC-1 model whole
- GPIO
- D0 to D13, A0 to A7, B0 and B1, with the Nano’s names defined for your sketch
- ADC1
- A0 to A7
- The LEDs
- The orange LED on D13, and red, green and blue of the RGB LED, lit on LOW
- UART0 and USB
- Both wired to the serial monitor
- WiFi, simulated
- WiFi.h over a network written in software: no radio, no 802.11, and real internet only when you sign in and switch it on
Not modeled
- Arduino pin numbering: sketches are built by GPIO number, so write D13 rather than 13.
- VIN and the board’s regulator: VIN is left open.
- The second core, the PSRAM, Bluetooth and a real radio.
Open one and press Run
Each of these opens in the editor exactly as it is drawn here.
Every built-in project on the Nano ESP32
Each has its own page with the circuit running, the code and a parts list.
Tutorials that use this board
Each one ends in a running circuit, on this same board.
Questions
Is it free?
Yes. Every board and every part is on the free plan, with no account needed.
Why does digitalWrite(13, HIGH) not light the LED?
Because Mokxi builds this board by GPIO number, as the IDE does with Pin Numbering set to "By GPIO number (legacy)". 13 is GPIO 13, which is A6. Write D13 or LED_BUILTIN, which mean the same pin under either setting.
Which way is the RGB LED wired?
Each color lights when its pin is LOW: digitalWrite(LED_RED, LOW) turns red on.
Does a classic Nano sketch run on it?
If it uses the D and A names, mostly: the pins sit in the same places. It runs at 3.3 V, and it is a different chip, so register-level AVR code does not.
The other boards
Every one of these runs today, and every one is free.
A RISC-V chip at 160 MHz, on the real memory map.
The classic Arduino, with an ATmega328P running at 16 MHz.
The Uno’s chip on a small board that fits a breadboard.
The big Arduino, with 54 digital pins and four serial ports.
An Uno-shaped board whose chip does its own USB serial.
A second RISC-V board, with 31 pins and simulated WiFi.
The classic ESP32 at 240 MHz, with simulated WiFi.
The ESP32-S3 at 240 MHz, with USB serial and an RGB LED.
Try it on your own firmware
What you build here runs on the board on your desk, unchanged. Nothing to install and no account needed.