FREE EXAMPLES LIBRARY

Simulator Examples

Browse 175 circuit and microcontroller examples for ESP32, Arduino, Raspberry Pi Pico, STM32 and analog SPICE circuits. 171 of them open right now in the Sensbench simulator with code and wiring pre-loaded — no hardware, no install, no account.

175example projects

171runnable today

12board & circuit groups

0accounts required

Open the Simulator ESP32 examples ↓

Getting Started 17

Start here if you have never wired anything. LEDs, buttons, serial — the rites of passage.

ESP32, ESP32-C3 & CAM 36

WiFi, BLE, sensors and displays on the ESP32 family — the same chips that ship in our kits.

Arduino Uno 11

The classic starting point: digital I/O, analog reads and Serial Monitor basics on the ATmega328P.

Arduino Nano & Mega 10

Same AVR brain, different bodies — Nano for breadboards, Mega for when you run out of pins.

ATtiny85 4

Eight pins, 8 KB of flash. Small enough to force tight code.

ATtiny85: Blink LEDbasicsbeginnerRun in simulator →ATtiny85: Button + LEDbasicsbeginnerRun in simulator →ATtiny85: NTC Temperature SensorsensorsintermediateRun in simulator →ATtiny85: PWM LED FadebasicsintermediateRun in simulator →

Raspberry Pi Pico 21

RP2040 projects: dual-core ARM at 133 MHz, PIO, and the friendliest ADC in the lineup.

Pico W — WiFi Projects 4

Web servers, WebSockets and relays over WiFi on the Pico W.

Picow Wifi Async Ledcoming soonPicow Wifi Relay Web Servercoming soonPicow Wifi Servo Webcoming soonPicow Wifi Websocket Ledcoming soon

STM32 25

Blue Pill, Black Pill and friends — ARM Cortex-M boards with far more timers than an Uno.

Raspberry Pi 3 / 4 / 5 6

Full Linux on a Raspberry Pi, driving GPIO from Python.

[Pi 3] Blink an LEDbasicsbeginnerRun in simulator →[Pi 3] Running Lights (5 LEDs)basicsintermediateRun in simulator →[Pi 4] Button Toggles LEDbasicsbeginnerRun in simulator →[Pi 4] RGB LED Color CyclebasicsintermediateRun in simulator →[Pi 5] PIR Motion AlarmsensorsintermediateRun in simulator →[Pi 5] Traffic LightbasicsintermediateRun in simulator →

Multi-Board Communication 4

Two boards in one simulation — watch them talk over UART, GPIO and handshakes.

[2× Pico W] Bidirectional Digital HandshakecommunicationbeginnerRun in simulator →[2× Pico W] Digital GPIO MirrorbasicsbeginnerRun in simulator →[2× Pico W] Serial1 Passthrough (UART0)communicationintermediateRun in simulator →[Pi + Arduino] Serial LED ControlcommunicationadvancedRun in simulator →

Analog & SPICE Circuits 23

Real SPICE simulation: dividers, filters, op-amps, rectifiers — with an oscilloscope on every node.

Logic, Power & Motor Drivers 14

Gates, latches, adders, motor drivers and power supplies — the glue between digital and analog.

Questions, answered

Are these simulator examples really free?

Yes. Every example on this page runs for free in your browser. There is no account, no install and no paywall — pick a card and it opens with the full code and wiring ready to run.

Do I need any real hardware?

No. The simulator emulates the actual chips — AVR, ARM, RISC-V and Xtensa — so the same sketch you run here works on the real board. When you do want hardware, our shop stocks the exact boards and sensors used in these examples.

Which example should I start with?

If you are new: the Getting Started group — blink an LED first, then a button, then serial output. If you have an ESP32 in mind, jump straight to the ESP32 group.

Can I change the code and wiring?

Yes — that is the point. Every example opens in the full editor: edit the sketch, add parts, move wires, hit play. Your changes stay in the simulator and cost nothing.

Every example runs in your browser

The Sensbench simulator emulates real chips — no cloud queue, no account, nothing to install. Open any example and start hacking on it.

Launch the Simulator