Arduino Simulator
Arduino Emulator
- Arduino Mega 2560
+ ESP32 Simulator
+ RP2040 Simulator
Example Sketches
- Emulator Architecture
diff --git a/frontend/src/pages/Esp32C3SimulatorPage.tsx b/frontend/src/pages/Esp32C3SimulatorPage.tsx
new file mode 100644
index 0000000..a7982b4
--- /dev/null
+++ b/frontend/src/pages/Esp32C3SimulatorPage.tsx
@@ -0,0 +1,186 @@
+/**
+ * /esp32-c3-simulator — SEO landing page
+ * Target keywords: "esp32-c3 simulator", "risc-v simulator", "esp32 c3 emulator"
+ */
+
+import React from 'react';
+import { Link } from 'react-router-dom';
+import { AppHeader } from '../components/layout/AppHeader';
+import { useSEO } from '../utils/useSEO';
+import esp32C3SvgUrl from '../../../wokwi-libs/wokwi-boards/boards/esp32-c3-devkitm-1/board.svg?url';
+import './SEOPage.css';
+
+const FAQ_ITEMS = [
+ {
+ q: 'What is the ESP32-C3?',
+ a: 'The ESP32-C3 is a RISC-V single-core microcontroller by Espressif running at 160 MHz (RV32IMC instruction set). It has WiFi + Bluetooth 5.0, 22 GPIO pins, and is one of the first RISC-V MCUs with a mature Arduino ecosystem.',
+ },
+ {
+ q: 'Does the ESP32-C3 simulator run in the browser?',
+ a: 'Yes. Unlike the Xtensa-based ESP32, the ESP32-C3 RISC-V emulation runs entirely in the browser — no QEMU backend needed. This makes it the fastest ESP32 variant to simulate.',
+ },
+ {
+ q: 'Is this also a RISC-V simulator?',
+ a: 'Yes. The ESP32-C3 uses the RISC-V RV32IMC instruction set. Velxio also supports the CH32V003 (RV32EC at 48 MHz) — another popular RISC-V microcontroller.',
+ },
+ {
+ q: 'Which ESP32-C3 boards are supported?',
+ a: 'Velxio supports ESP32-C3 DevKitM-1, Seeed XIAO ESP32-C3, and ESP32-C3 SuperMini (Aitewinrobot). All three use the same RISC-V core.',
+ },
+ {
+ q: 'Can I use Arduino code with ESP32-C3?',
+ a: 'Yes. Velxio compiles your .ino sketch using the official ESP32 Arduino core with the ESP32-C3 board target. All standard Arduino functions work — Serial, GPIO, analogRead, etc.',
+ },
+];
+
+const JSON_LD: object[] = [
+ {
+ '@context': 'https://schema.org',
+ '@type': 'SoftwareApplication',
+ name: 'Velxio — Free ESP32-C3 & RISC-V Simulator',
+ applicationCategory: 'DeveloperApplication',
+ operatingSystem: 'Any (browser-based)',
+ description:
+ 'Free online ESP32-C3 RISC-V simulator. Browser-native RV32IMC emulation at 160 MHz — no backend, no install. Simulate ESP32-C3 DevKit, XIAO ESP32-C3, SuperMini, and CH32V003.',
+ url: 'https://velxio.dev/esp32-c3-simulator',
+ offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+ author: { '@type': 'Person', name: 'David Montero Crespo' },
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'FAQPage',
+ mainEntity: FAQ_ITEMS.map(({ q, a }) => ({
+ '@type': 'Question',
+ name: q,
+ acceptedAnswer: { '@type': 'Answer', text: a },
+ })),
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'BreadcrumbList',
+ itemListElement: [
+ { '@type': 'ListItem', position: 1, name: 'Velxio', item: 'https://velxio.dev/' },
+ { '@type': 'ListItem', position: 2, name: 'ESP32-C3 Simulator', item: 'https://velxio.dev/esp32-c3-simulator' },
+ ],
+ },
+];
+
+export const Esp32C3SimulatorPage: React.FC = () => {
+ useSEO({
+ title: 'Free ESP32-C3 & RISC-V Simulator — Browser-Native Emulation | Velxio',
+ description:
+ 'Simulate ESP32-C3 RISC-V code directly in your browser — no backend needed. RV32IMC at 160 MHz, 48+ components, Serial Monitor. Also supports CH32V003. Free and open-source.',
+ url: 'https://velxio.dev/esp32-c3-simulator',
+ jsonLd: JSON_LD,
+ });
+
+ return (
+
+
+
+
+
+
+ Free ESP32-C3 Simulator
+ RISC-V Emulation — Runs in Your Browser
+
+
+ Simulate ESP32-C3 and CH32V003 RISC-V code directly in your browser — no QEMU backend, no install.
+ RV32IMC at 160 MHz with 48+ interactive components.
+
+
+ Open ESP32-C3 Simulator →
+ C3 Examples
+
+
Free & open-source · 100% browser-native · No backend required
+
+
+
+
Supported RISC-V boards
+
+ Velxio emulates RISC-V microcontrollers natively in the browser using WebAssembly — the fastest simulation path available, no server round-trip.
+
+
+
+
ESP32-C3 DevKitM-1
+
RISC-V RV32IMC at 160 MHz. WiFi + BLE 5.0, 22 GPIO, 400 KB SRAM. The official Espressif dev board.
+
+
+
XIAO ESP32-C3
+
Seeed Studio compact RISC-V board. 11 GPIO, USB-C, battery charging IC. 21×17.5 mm.
+
+
+
ESP32-C3 SuperMini
+
Aitewinrobot ultra-compact board. Same RISC-V core, minimal form factor for embedded projects.
+
+
+
CH32V003
+
WCH RISC-V RV32EC at 48 MHz. Ultra-low-cost DIP-8 package, 2 KB SRAM, 16 KB flash. Just cents per chip.
+
+
+
+
+
+
ESP32-C3 example projects
+
+ Ready-to-run examples for ESP32-C3 — from basic GPIO to sensor integrations.
+
+
+
+
C3 Blink LED
+
Toggle an LED on GPIO 8. Classic blink sketch running on RISC-V.
+
+
+
C3 RGB LED
+
Drive an RGB LED with three PWM channels — smooth color cycling on RISC-V.
+
+
+
C3 Button + LED
+
Read a pushbutton on GPIO 9 and toggle an LED — digital input/output on ESP32-C3.
+
+
+
C3 DHT22 Sensor
+
Read temperature and humidity from DHT22 on ESP32-C3. Serial Monitor output.
+
+
+
C3 HC-SR04 Ultrasonic
+
Measure distance with ultrasonic sensor. Trigger/echo timing on RISC-V GPIO.
+
+
+
C3 Servo Motor
+
Sweep a servo from 0° to 180° using ESP32-C3 PWM output.
+
+
+
+ View All 68+ Examples →
+
+
+
+
+
Frequently Asked Questions
+
+ {FAQ_ITEMS.map(({ q, a }) => (
+
+
{q}
+
{a}
+
+ ))}
+
+
+
+
+
Ready to simulate ESP32-C3?
+
Open the editor, pick an ESP32-C3 board, and start coding — runs instantly in your browser.
+ Simulate ESP32-S3 firmware in your browser — real Xtensa LX7 dual-core emulation via QEMU.
+ USB OTG, vector extensions, 45 GPIOs. Write, compile, and run in seconds.
+
+ );
+};
diff --git a/frontend/src/pages/Esp32SimulatorPage.tsx b/frontend/src/pages/Esp32SimulatorPage.tsx
new file mode 100644
index 0000000..3d204a9
--- /dev/null
+++ b/frontend/src/pages/Esp32SimulatorPage.tsx
@@ -0,0 +1,201 @@
+/**
+ * /esp32-simulator — SEO landing page
+ * Target keywords: "esp32 simulator", "esp32 emulator", "esp32 emulator online"
+ */
+
+import React from 'react';
+import { Link } from 'react-router-dom';
+import { AppHeader } from '../components/layout/AppHeader';
+import { useSEO } from '../utils/useSEO';
+import esp32SvgUrl from '../../../wokwi-libs/wokwi-boards/boards/esp32-devkit-v1/board.svg?url';
+import './SEOPage.css';
+
+const FAQ_ITEMS = [
+ {
+ q: 'Is this ESP32 simulator free?',
+ a: 'Yes. Velxio is completely free and open-source (GNU AGPLv3). Simulate ESP32 code in your browser or self-host the entire platform with one Docker command — no account, no payment.',
+ },
+ {
+ q: 'How does the ESP32 emulation work?',
+ a: 'Velxio uses QEMU (lcgamboa fork) to emulate the Xtensa LX6 CPU at 240 MHz. Your Arduino sketch is compiled with the official ESP32 Arduino core and the resulting firmware runs on the emulated hardware — same as real silicon.',
+ },
+ {
+ q: 'Which ESP32 boards are supported?',
+ a: 'Velxio supports ESP32 DevKit V1, ESP32 DevKit C V4, ESP32-CAM, Arduino Nano ESP32, ESP32-S3 DevKitC, XIAO ESP32-S3, ESP32-C3 DevKit, XIAO ESP32-C3, and ESP32-C3 SuperMini.',
+ },
+ {
+ q: 'Can I simulate ESP32 with sensors and displays?',
+ a: 'Yes. Connect 48+ interactive components: DHT22, HC-SR04 ultrasonic, MPU6050 IMU, servo motors, ILI9341 TFT display, LEDs, buttons, 7-segment displays, and more.',
+ },
+ {
+ q: 'Does it support Serial Monitor for ESP32?',
+ a: 'Yes. The Serial Monitor works with ESP32 just like Arduino — auto baud-rate detection, real-time TX/RX output, and send commands back to your running sketch.',
+ },
+];
+
+const JSON_LD: object[] = [
+ {
+ '@context': 'https://schema.org',
+ '@type': 'SoftwareApplication',
+ name: 'Velxio — Free ESP32 Simulator & Emulator',
+ applicationCategory: 'DeveloperApplication',
+ operatingSystem: 'Any (browser-based)',
+ description:
+ 'Free online ESP32 simulator with real Xtensa LX6 emulation via QEMU. Simulate ESP32, ESP32-S3, and ESP32-CAM code with 48+ interactive components — no install, no account.',
+ url: 'https://velxio.dev/esp32-simulator',
+ offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+ author: { '@type': 'Person', name: 'David Montero Crespo' },
+ license: 'https://www.gnu.org/licenses/agpl-3.0.html',
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'FAQPage',
+ mainEntity: FAQ_ITEMS.map(({ q, a }) => ({
+ '@type': 'Question',
+ name: q,
+ acceptedAnswer: { '@type': 'Answer', text: a },
+ })),
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'BreadcrumbList',
+ itemListElement: [
+ { '@type': 'ListItem', position: 1, name: 'Velxio', item: 'https://velxio.dev/' },
+ { '@type': 'ListItem', position: 2, name: 'ESP32 Simulator', item: 'https://velxio.dev/esp32-simulator' },
+ ],
+ },
+];
+
+export const Esp32SimulatorPage: React.FC = () => {
+ useSEO({
+ title: 'Free ESP32 Simulator Online — Xtensa LX6 Emulation | Velxio',
+ description:
+ 'Simulate ESP32 code in your browser for free. Real Xtensa LX6 emulation at 240 MHz via QEMU — ESP32 DevKit, ESP32-S3, ESP32-CAM. 48+ components, Serial Monitor, no install.',
+ url: 'https://velxio.dev/esp32-simulator',
+ jsonLd: JSON_LD,
+ });
+
+ return (
+
+
+
+ {/* Hero */}
+
+
+
+ Free ESP32 Simulator
+ Xtensa LX6 Emulation in Your Browser
+
+
+ Write Arduino code for ESP32 and simulate it instantly — real Xtensa LX6 emulation at 240 MHz via QEMU.
+ 48+ interactive components, Serial Monitor, no install required.
+
+
+ Open ESP32 Simulator →
+ ESP32 Examples
+
+
Free & open-source · No signup · QEMU-powered emulation
+
+
+ {/* Supported ESP32 boards */}
+
+
Supported ESP32 boards
+
+ Velxio emulates the full ESP32 family — Xtensa LX6 (ESP32), Xtensa LX7 (ESP32-S3), and RISC-V (ESP32-C3).
+ Each board runs with real CPU emulation, not approximations.
+
+ );
+};
diff --git a/frontend/src/pages/RaspberryPiPicoSimulatorPage.tsx b/frontend/src/pages/RaspberryPiPicoSimulatorPage.tsx
new file mode 100644
index 0000000..b453571
--- /dev/null
+++ b/frontend/src/pages/RaspberryPiPicoSimulatorPage.tsx
@@ -0,0 +1,182 @@
+/**
+ * /raspberry-pi-pico-simulator — SEO landing page
+ * Target keywords: "raspberry pi pico simulator", "rp2040 emulator", "rp2040 simulator"
+ */
+
+import React from 'react';
+import { Link } from 'react-router-dom';
+import { AppHeader } from '../components/layout/AppHeader';
+import { useSEO } from '../utils/useSEO';
+import piPicoSvgUrl from '../../../wokwi-libs/wokwi-boards/boards/pi-pico/board.svg?url';
+import './SEOPage.css';
+
+const FAQ_ITEMS = [
+ {
+ q: 'Is this Raspberry Pi Pico simulator free?',
+ a: 'Yes. Velxio is completely free and open-source (GNU AGPLv3). Simulate RP2040 code in your browser — no Raspberry Pi hardware needed, no account, no payment.',
+ },
+ {
+ q: 'How does the RP2040 emulation work?',
+ a: 'Velxio uses rp2040js — the open-source RP2040 emulator — to simulate the ARM Cortex-M0+ CPU at 133 MHz. Your code is compiled with the official Arduino-Pico core by Earle Philhower.',
+ },
+ {
+ q: 'Does it support Raspberry Pi Pico W?',
+ a: 'Yes. Both Raspberry Pi Pico and Pico W are supported. The RP2040 core emulation is identical — WiFi features are planned for a future update.',
+ },
+ {
+ q: 'Can I use Arduino code with Raspberry Pi Pico?',
+ a: 'Yes. Velxio compiles your .ino sketch using the arduino-pico core (by Earle Philhower). Standard Arduino functions like Serial, digitalWrite, analogRead, and I2C/SPI work out of the box.',
+ },
+ {
+ q: 'What components work with Pico simulation?',
+ a: 'All 48+ components: LEDs, resistors, buttons, DHT22, HC-SR04, servo motors, 7-segment displays, RGB LEDs, NTC sensors, joysticks, and more. Wire them to any of the 26 GPIO pins.',
+ },
+];
+
+const JSON_LD: object[] = [
+ {
+ '@context': 'https://schema.org',
+ '@type': 'SoftwareApplication',
+ name: 'Velxio — Free Raspberry Pi Pico & RP2040 Simulator',
+ applicationCategory: 'DeveloperApplication',
+ operatingSystem: 'Any (browser-based)',
+ description:
+ 'Free online Raspberry Pi Pico simulator with real RP2040 ARM Cortex-M0+ emulation at 133 MHz. Simulate Arduino code for Pico and Pico W with 48+ components — no hardware needed.',
+ url: 'https://velxio.dev/raspberry-pi-pico-simulator',
+ offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+ author: { '@type': 'Person', name: 'David Montero Crespo' },
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'FAQPage',
+ mainEntity: FAQ_ITEMS.map(({ q, a }) => ({
+ '@type': 'Question',
+ name: q,
+ acceptedAnswer: { '@type': 'Answer', text: a },
+ })),
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'BreadcrumbList',
+ itemListElement: [
+ { '@type': 'ListItem', position: 1, name: 'Velxio', item: 'https://velxio.dev/' },
+ { '@type': 'ListItem', position: 2, name: 'Raspberry Pi Pico Simulator', item: 'https://velxio.dev/raspberry-pi-pico-simulator' },
+ ],
+ },
+];
+
+export const RaspberryPiPicoSimulatorPage: React.FC = () => {
+ useSEO({
+ title: 'Free Raspberry Pi Pico Simulator — RP2040 ARM Cortex-M0+ Emulation | Velxio',
+ description:
+ 'Simulate Raspberry Pi Pico and Pico W code for free. Real RP2040 ARM Cortex-M0+ emulation at 133 MHz via rp2040js. 48+ components, Serial Monitor, Arduino-Pico core. No install.',
+ url: 'https://velxio.dev/raspberry-pi-pico-simulator',
+ jsonLd: JSON_LD,
+ });
+
+ return (
+
+
+
+
+
+
+ Free Raspberry Pi Pico Simulator
+ RP2040 ARM Cortex-M0+ Emulation
+
+
+ Write Arduino code for Raspberry Pi Pico and simulate it in your browser — real RP2040 ARM Cortex-M0+ emulation
+ at 133 MHz. 26 GPIO pins, I2C, SPI, UART, ADC. No hardware needed.
+
+
+ Open Pico Simulator →
+ Pico Examples
+
+
Free & open-source · rp2040js emulation · No account needed
+
+
+
+
Supported RP2040 boards
+
+ Both official Raspberry Pi Pico boards are supported with full RP2040 CPU emulation via rp2040js.
+
Same RP2040 chip plus Infineon CYW43439 for WiFi 4 and Bluetooth 5.2. Pin-compatible with Pico.
+
+
+
RP2040 specs
+
Dual-core Cortex-M0+ at 133 MHz, 264 KB SRAM, hardware interpolators, 8 PIO state machines, DMA controller.
+
+
+
+
+
+
Pico example projects
+
+ 18+ ready-to-run Raspberry Pi Pico examples — from LED blink to I2C, SPI, and sensor integrations.
+
+
+
+
Pico Blink
+
Toggle the onboard LED (GP25). The simplest starting point for RP2040.
+
+
+
Pico Serial Echo
+
Read from Serial and echo it back. Test UART communication on RP2040.
+
+
+
Pico I2C Scanner
+
Scan the I2C bus and report connected devices. Foundation for sensor projects.
+
+
+
Pico ADC Read
+
Read the 12-bit ADC — measure analog voltage, temperature sensor, or potentiometer.
+
+
+
Pico DHT22 Sensor
+
Read temperature and humidity from DHT22. Serial output with formatted readings.
+
+
+
Pico Servo Motor
+
Sweep a servo from 0° to 180° using RP2040 PWM. Smooth motion with configurable range.
+
+
+
+ View All 68+ Examples →
+
+
+
+
+
Frequently Asked Questions
+
+ {FAQ_ITEMS.map(({ q, a }) => (
+
+
{q}
+
{a}
+
+ ))}
+
+
+
+
+
Ready to simulate Raspberry Pi Pico?
+
Open the editor, select a Pico board, and start coding — no Raspberry Pi hardware required.
+ Launch Pico Simulator →
+
+ Example Projects
+ RP2040 Docs
+ Raspberry Pi 3 Simulator
+ ESP32 Simulator
+ Arduino Simulator
+
+
+
+
+ );
+};
diff --git a/frontend/src/pages/RaspberryPiSimulatorPage.tsx b/frontend/src/pages/RaspberryPiSimulatorPage.tsx
new file mode 100644
index 0000000..bc87c84
--- /dev/null
+++ b/frontend/src/pages/RaspberryPiSimulatorPage.tsx
@@ -0,0 +1,173 @@
+/**
+ * /raspberry-pi-simulator — SEO landing page
+ * Target keywords: "raspberry pi simulator", "raspberry pi 3 emulator", "raspberry pi emulator online"
+ */
+
+import React from 'react';
+import { Link } from 'react-router-dom';
+import { AppHeader } from '../components/layout/AppHeader';
+import { useSEO } from '../utils/useSEO';
+import raspberryPi3Svg from '../assets/Raspberry_Pi_3_illustration.svg';
+import './SEOPage.css';
+
+const FAQ_ITEMS = [
+ {
+ q: 'Can I simulate a Raspberry Pi 3 in my browser?',
+ a: 'Yes. Velxio emulates a full Raspberry Pi 3B using QEMU raspi3b — ARM Cortex-A53 quad-core at 1.2 GHz running Raspberry Pi OS (Linux). You get a real terminal to run Python, bash, and system commands.',
+ },
+ {
+ q: 'Is this Raspberry Pi simulator free?',
+ a: 'Yes. Velxio is 100% free and open-source (GNU AGPLv3). No account, no subscription — simulate Raspberry Pi 3 code in your browser or self-host with Docker.',
+ },
+ {
+ q: 'Can I run Python scripts on the Raspberry Pi simulator?',
+ a: 'Yes. The emulated Raspberry Pi 3 runs full Raspberry Pi OS with Python 3 pre-installed. You can run Python scripts, use RPi.GPIO for GPIO control, install pip packages, and more.',
+ },
+ {
+ q: 'What is the difference between Pi Pico and Pi 3 simulation?',
+ a: 'Raspberry Pi Pico (RP2040) is a microcontroller — runs Arduino C++ code, no OS. Raspberry Pi 3 is a full Linux computer — runs Python, bash, and system services. Velxio supports both.',
+ },
+ {
+ q: 'Does it support GPIO on Raspberry Pi 3?',
+ a: 'Yes. The QEMU-emulated Raspberry Pi 3 supports GPIO via RPi.GPIO and gpiozero Python libraries. Control LEDs, read buttons, and interface with sensors from Python.',
+ },
+];
+
+const JSON_LD: object[] = [
+ {
+ '@context': 'https://schema.org',
+ '@type': 'SoftwareApplication',
+ name: 'Velxio — Free Raspberry Pi 3 Simulator',
+ applicationCategory: 'DeveloperApplication',
+ operatingSystem: 'Any (browser-based)',
+ description:
+ 'Free online Raspberry Pi 3 simulator with full ARM Cortex-A53 Linux emulation via QEMU. Run Python, bash, and RPi.GPIO in your browser — no Raspberry Pi hardware needed.',
+ url: 'https://velxio.dev/raspberry-pi-simulator',
+ offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+ author: { '@type': 'Person', name: 'David Montero Crespo' },
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'FAQPage',
+ mainEntity: FAQ_ITEMS.map(({ q, a }) => ({
+ '@type': 'Question',
+ name: q,
+ acceptedAnswer: { '@type': 'Answer', text: a },
+ })),
+ },
+ {
+ '@context': 'https://schema.org',
+ '@type': 'BreadcrumbList',
+ itemListElement: [
+ { '@type': 'ListItem', position: 1, name: 'Velxio', item: 'https://velxio.dev/' },
+ { '@type': 'ListItem', position: 2, name: 'Raspberry Pi Simulator', item: 'https://velxio.dev/raspberry-pi-simulator' },
+ ],
+ },
+];
+
+export const RaspberryPiSimulatorPage: React.FC = () => {
+ useSEO({
+ title: 'Free Raspberry Pi 3 Simulator — Full Linux Emulation in Your Browser | Velxio',
+ description:
+ 'Simulate Raspberry Pi 3 for free. Full ARM Cortex-A53 Linux emulation via QEMU — run Python, bash, RPi.GPIO in your browser. No Raspberry Pi hardware needed.',
+ url: 'https://velxio.dev/raspberry-pi-simulator',
+ jsonLd: JSON_LD,
+ });
+
+ return (
+
+
+
+
+
+
+ Free Raspberry Pi 3 Simulator
+ Full Linux · Python · GPIO — In Your Browser
+
+
+ Run a full Raspberry Pi 3B with Raspberry Pi OS directly in your browser — ARM Cortex-A53 quad-core emulation via QEMU.
+ Write Python, control GPIO, install packages. No hardware needed.
+
+
+ Open Pi 3 Simulator →
+ Read the Docs
+
+
Free & open-source · QEMU ARM64 · Full Raspberry Pi OS
+
+
+
+
What can you do with the Pi 3 simulator?
+
+ Velxio emulates a complete Raspberry Pi 3B — not just GPIO pins, but the entire Linux operating system.
+ It's a full computer in your browser.
+
+
+
+
Run Python Scripts
+
Python 3 pre-installed on Raspberry Pi OS. Run scripts, use pip, import libraries — full Python environment.
+
+
+
GPIO Control
+
Use RPi.GPIO or gpiozero to control LEDs, read buttons, drive motors — real GPIO emulation in QEMU.
+
+
+
Linux Terminal
+
Full bash terminal with apt, nano, git, and all standard Linux tools. Install packages, edit files, run services.
+
+
+
ARM Cortex-A53
+
Quad-core 64-bit ARM CPU at 1.2 GHz via QEMU raspi3b machine. Runs the official Raspberry Pi OS image.
+
+
+
No SD Card Needed
+
The OS image is pre-loaded. No flashing, no SD card, no power supply — just open the browser and start coding.
+
+
+
Multi-Board Canvas
+
Mix Raspberry Pi 3 with Arduino and ESP32 on the same simulation canvas. Control Arduino from Pi via serial.
+
+
+
+
+
+
Raspberry Pi Pico vs Pi 3 — which to choose?
+
+
+
Raspberry Pi Pico (RP2040)
+
Microcontroller. ARM Cortex-M0+ at 133 MHz. Runs Arduino C++ code. No OS, bare-metal. Best for embedded, IoT, sensors. Try Pico Simulator →
+
+
+
Raspberry Pi 3 (ARM Cortex-A53)
+
Full Linux computer. Quad-core at 1.2 GHz. Runs Python, Node.js, bash. Best for automation, servers, GPIO scripting, education.
+
+
+
+
+
+
Frequently Asked Questions
+
+ {FAQ_ITEMS.map(({ q, a }) => (
+
+
{q}
+
{a}
+
+ ))}
+
+
+
+
+
Ready to simulate Raspberry Pi 3?
+
Open the editor, select Raspberry Pi 3, and boot into Linux — right in your browser.