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 SimulatorESP32 examples ↓

Getting Started 17

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

Blink LED — free online circuit simulator example on SensbenchBlink LEDbasicsbeginnerRun in simulator →Button Control — free online circuit simulator example on SensbenchButton ControlbasicsbeginnerRun in simulator →Fade LED — free online circuit simulator example on SensbenchFade LEDbasicsbeginnerRun in simulator →I2C EEPROM Read/Write — free online circuit simulator example on SensbenchI2C EEPROM Read/WritecommunicationintermediateRun in simulator →I2C RTC Clock (DS1307) — free online circuit simulator example on SensbenchI2C RTC Clock (DS1307)communicationintermediateRun in simulator →I2C Scanner (TWI) — free online circuit simulator example on SensbenchI2C Scanner (TWI)communicationintermediateRun in simulator →KY-040 Rotary Encoder — free online circuit simulator example on SensbenchKY-040 Rotary EncoderbasicsbeginnerRun in simulator →LCD 20x4 Display — free online circuit simulator example on SensbenchLCD 20×4 DisplaydisplaysintermediateRun in simulator →Multi-Protocol Demo — free online circuit simulator example on SensbenchMulti-Protocol DemocommunicationadvancedRun in simulator →RGB LED Colors — free online circuit simulator example on SensbenchRGB LED ColorsbasicsintermediateRun in simulator →Serial Echo (USART) — free online circuit simulator example on SensbenchSerial Echo (USART)communicationbeginnerRun in simulator →Serial Hello World — free online circuit simulator example on SensbenchSerial Hello WorldcommunicationbeginnerRun in simulator →Serial LED Control — free online circuit simulator example on SensbenchSerial LED ControlcommunicationbeginnerRun in simulator →Simon Says Game — free online circuit simulator example on SensbenchSimon Says GamegamesadvancedRun in simulator →SPI Loopback Test — free online circuit simulator example on SensbenchSPI Loopback TestcommunicationintermediateRun in simulator →TFT ILI9341 Display — free online circuit simulator example on SensbenchTFT ILI9341 DisplaydisplaysintermediateRun in simulator →Traffic Light — free online circuit simulator example on SensbenchTraffic LightbasicsbeginnerRun in simulator →

ESP32, ESP32-C3 & CAM 36

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

ESP32-C3: Blink LED — free online circuit simulator example on SensbenchESP32-C3: Blink LEDbasicsbeginnerRun in simulator →ESP32-C3: Button + LED — free online circuit simulator example on SensbenchESP32-C3: Button + LEDbasicsbeginnerRun in simulator →ESP32-C3: DHT22 Temperature & Humidity — free online circuit simulator example on SensbenchESP32-C3: DHT22 Temperature & HumiditysensorsbeginnerRun in simulator →ESP32-C3: HC-SR04 Ultrasonic Distance — free online circuit simulator example on SensbenchESP32-C3: HC-SR04 Ultrasonic DistancesensorsbeginnerRun in simulator →ESP32-C3: PIR Motion Detector — free online circuit simulator example on SensbenchESP32-C3: PIR Motion DetectorsensorsbeginnerRun in simulator →ESP32-C3: RGB LED — free online circuit simulator example on SensbenchESP32-C3: RGB LEDbasicsbeginnerRun in simulator →ESP32-C3: Serial Hello — free online circuit simulator example on SensbenchESP32-C3: Serial HellocommunicationbeginnerRun in simulator →ESP32-C3: Serial Echo — free online circuit simulator example on SensbenchESP32-C3: Serial EchocommunicationbeginnerRun in simulator →ESP32-C3: Servo Motor Sweep — free online circuit simulator example on SensbenchESP32-C3: Servo Motor SweeproboticsbeginnerRun in simulator →ESP32: 7-Segment Counter — free online circuit simulator example on SensbenchESP32: 7-Segment CounterdisplaysbeginnerRun in simulator →ESP32 BLE Advertise — free online circuit simulator example on SensbenchESP32 BLE AdvertisecommunicationintermediateRun in simulator →ESP32 Blink LED — free online circuit simulator example on SensbenchESP32 Blink LEDbasicsbeginnerRead & run →ESP32: BMP280 Weather Station — free online circuit simulator example on SensbenchESP32: BMP280 Weather StationsensorsintermediateRun in simulator →ESP32-C3 BLE Advertise — free online circuit simulator example on SensbenchESP32-C3 BLE AdvertisecommunicationintermediateRun in simulator →ESP32-C3 HTTP Server — free online circuit simulator example on SensbenchESP32-C3 HTTP ServercommunicationintermediateRun in simulator →ESP32-C3 WiFi Connect — free online circuit simulator example on SensbenchESP32-C3 WiFi ConnectcommunicationbeginnerRun in simulator →ESP32-C3 WiFi Scan — free online circuit simulator example on SensbenchESP32-C3 WiFi ScancommunicationbeginnerRun in simulator →ESP32-CAM + ILI9341 Live Preview — free online circuit simulator example on SensbenchESP32-CAM + ILI9341 Live PreviewdisplaysintermediateRun in simulator →ESP32-CAM: Webcam Demo — free online circuit simulator example on SensbenchESP32-CAM: Webcam DemosensorsbeginnerRun in simulator →ESP32: DHT22 Temperature & Humidity — free online circuit simulator example on SensbenchESP32: DHT22 Temperature & HumiditysensorsbeginnerRead & run →ESP32 Doom — Raycaster (ILI9341) — free online circuit simulator example on SensbenchESP32 Doom — Raycaster (ILI9341)gamesadvancedRun in simulator →ESP32 Dual ADC Reader — free online circuit simulator example on SensbenchESP32 Dual ADC ReadercircuitsbeginnerRun in simulator →ESP32: HC-SR04 Ultrasonic Distance — free online circuit simulator example on SensbenchESP32: HC-SR04 Ultrasonic DistancesensorsbeginnerRun in simulator →ESP32 HTTP Server — free online circuit simulator example on SensbenchESP32 HTTP ServercommunicationintermediateRun in simulator →ESP32: Pure ESP-IDF Blink — free online circuit simulator example on SensbenchESP32: Pure ESP-IDF BlinkbasicsintermediateRun in simulator →ESP32: Analog Joystick — free online circuit simulator example on SensbenchESP32: Analog JoysticksensorsbeginnerRun in simulator →ESP32: MPU-6050 Accelerometer — free online circuit simulator example on SensbenchESP32: MPU-6050 AccelerometersensorsintermediateRun in simulator →ESP32: SSD1306 OLED Display — free online circuit simulator example on SensbenchESP32: SSD1306 OLED DisplaydisplaysintermediateRun in simulator →ESP32: SSD1306 OLED (4-pin I2C) — free online circuit simulator example on SensbenchESP32: SSD1306 OLED (4-pin I2C)displaysintermediateRun in simulator →ESP32: PIR Motion Detector — free online circuit simulator example on SensbenchESP32: PIR Motion DetectorsensorsbeginnerRun in simulator →ESP32 LEDC PWM RGB — free online circuit simulator example on SensbenchESP32 LEDC PWM RGBcircuitsintermediateRun in simulator →ESP32 Serial Echo — free online circuit simulator example on SensbenchESP32 Serial EchocommunicationbeginnerRun in simulator →ESP32: Servo Motor + Potentiometer — free online circuit simulator example on SensbenchESP32: Servo Motor + PotentiometerroboticsbeginnerRun in simulator →ESP32: Stepper + A4988 — free online circuit simulator example on SensbenchESP32: Stepper + A4988motorsintermediateRun in simulator →ESP32 WiFi Connect — free online circuit simulator example on SensbenchESP32 WiFi ConnectcommunicationbeginnerRun in simulator →ESP32 WiFi Scan — free online circuit simulator example on SensbenchESP32 WiFi ScancommunicationbeginnerRead & run →

Arduino Uno 11

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

Uno: 7-Segment Counter — free online circuit simulator example on SensbenchUno: 7-Segment CounterdisplaysbeginnerRun in simulator →Uno: DHT22 Temperature & Humidity — free online circuit simulator example on SensbenchUno: DHT22 Temperature & HumiditysensorsbeginnerRun in simulator →Uno: HC-SR04 Ultrasonic Distance — free online circuit simulator example on SensbenchUno: HC-SR04 Ultrasonic DistancesensorsbeginnerRun in simulator →Uno: NTC Thermistor Temperature — free online circuit simulator example on SensbenchUno: NTC Thermistor TemperaturesensorsintermediateRun in simulator →Arduino Uno: SSD1306 OLED (4-pin I2C) — free online circuit simulator example on SensbenchArduino Uno: SSD1306 OLED (4-pin I2C)displaysintermediateRun in simulator →Uno: Photoresistor Light Sensor — free online circuit simulator example on SensbenchUno: Photoresistor Light SensorsensorsbeginnerRun in simulator →Uno: PIR Motion Detector — free online circuit simulator example on SensbenchUno: PIR Motion DetectorsensorsbeginnerRun in simulator →Uno: Potentiometer → Serial — free online circuit simulator example on SensbenchUno: Potentiometer → SerialsensorsbeginnerRun in simulator →Uno: RGB LED Cycle — free online circuit simulator example on SensbenchUno: RGB LED CyclebasicsbeginnerRun in simulator →Uno: Servo Motor Sweep — free online circuit simulator example on SensbenchUno: Servo Motor SweeproboticsbeginnerRun in simulator →Arduino Uno: Stepper + A4988 — free online circuit simulator example on SensbenchArduino Uno: Stepper + A4988motorsintermediateRun in simulator →

Arduino Nano & Mega 10

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

Mega: Blink LED — free online circuit simulator example on SensbenchMega: Blink LEDbasicsbeginnerRun in simulator →Mega: 8-LED Chase — free online circuit simulator example on SensbenchMega: 8-LED ChasebasicsbeginnerRun in simulator →Arduino Mega 16-LED Bar — free online circuit simulator example on SensbenchArduino Mega 16-LED BarcircuitsbeginnerRun in simulator →Mega: Serial Hello — free online circuit simulator example on SensbenchMega: Serial HellocommunicationbeginnerRun in simulator →Mega: Serial LED Control — free online circuit simulator example on SensbenchMega: Serial LED ControlcommunicationintermediateRun in simulator →Nano: Blink LED — free online circuit simulator example on SensbenchNano: Blink LEDbasicsbeginnerRun in simulator →Nano: Button + LED — free online circuit simulator example on SensbenchNano: Button + LEDbasicsbeginnerRun in simulator →Nano: PWM Fade — free online circuit simulator example on SensbenchNano: PWM FadebasicsbeginnerRun in simulator →Arduino Nano Sensor Station — free online circuit simulator example on SensbenchArduino Nano Sensor StationcircuitsbeginnerRun in simulator →Nano: Serial Hello — free online circuit simulator example on SensbenchNano: Serial HellocommunicationbeginnerRun in simulator →

ATtiny85 4

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

ATtiny85: Blink LED — free online circuit simulator example on SensbenchATtiny85: Blink LEDbasicsbeginnerRun in simulator →ATtiny85: Button + LED — free online circuit simulator example on SensbenchATtiny85: Button + LEDbasicsbeginnerRun in simulator →ATtiny85: NTC Temperature Sensor — free online circuit simulator example on SensbenchATtiny85: NTC Temperature SensorsensorsintermediateRun in simulator →ATtiny85: PWM LED Fade — free online circuit simulator example on SensbenchATtiny85: 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: 7-Segment Counter — free online circuit simulator example on SensbenchPico: 7-Segment CounterdisplaysbeginnerRun in simulator →[Pico] ADC Read — free online circuit simulator example on Sensbench[Pico] ADC ReadsensorsbeginnerRun in simulator →[Pico] Blink LED — free online circuit simulator example on Sensbench[Pico] Blink LEDbasicsbeginnerRun in simulator →Pico: Button + LED — free online circuit simulator example on SensbenchPico: Button + LEDbasicsbeginnerRun in simulator →Pico: DHT22 Temperature & Humidity — free online circuit simulator example on SensbenchPico: DHT22 Temperature & HumiditysensorsbeginnerRun in simulator →Pico Doom — Raycaster Demo — free online circuit simulator example on SensbenchPico Doom — Raycaster DemogamesadvancedRun in simulator →Pico: HC-SR04 Ultrasonic Distance — free online circuit simulator example on SensbenchPico: HC-SR04 Ultrasonic DistancesensorsbeginnerRun in simulator →[Pico] I2C EEPROM R/W — free online circuit simulator example on Sensbench[Pico] I2C EEPROM R/WcommunicationintermediateRun in simulator →[Pico] I2C RTC Read — free online circuit simulator example on Sensbench[Pico] I2C RTC ReadcommunicationintermediateRun in simulator →[Pico] I2C Scanner — free online circuit simulator example on Sensbench[Pico] I2C ScannercommunicationintermediateRun in simulator →Pico: Analog Joystick — free online circuit simulator example on SensbenchPico: Analog JoysticksensorsbeginnerRun in simulator →[Pico] Multi-Protocol Demo — free online circuit simulator example on Sensbench[Pico] Multi-Protocol DemocommunicationadvancedRun in simulator →Pico: NTC Thermistor Temperature — free online circuit simulator example on SensbenchPico: NTC Thermistor TemperaturesensorsintermediateRun in simulator →Raspberry Pi Pico: SSD1306 OLED (4-pin I2C) — free online circuit simulator example on SensbenchRaspberry Pi Pico: SSD1306 OLED (4-pin I2C)displaysintermediateRun in simulator →Pico: PIR Motion Detector — free online circuit simulator example on SensbenchPico: PIR Motion DetectorsensorsbeginnerRun in simulator →Pico: RGB LED Cycle — free online circuit simulator example on SensbenchPico: RGB LED CyclebasicsbeginnerRun in simulator →[Pico] Serial Echo — free online circuit simulator example on Sensbench[Pico] Serial EchocommunicationbeginnerRun in simulator →[Pico] Serial LED Control — free online circuit simulator example on Sensbench[Pico] Serial LED ControlcommunicationbeginnerRun in simulator →Pico: Servo Motor Sweep — free online circuit simulator example on SensbenchPico: Servo Motor SweeproboticsbeginnerRun in simulator →[Pico] SPI Loopback — free online circuit simulator example on Sensbench[Pico] SPI LoopbackcommunicationintermediateRun in simulator →Raspberry Pi Pico: Stepper + A4988 — free online circuit simulator example on SensbenchRaspberry Pi Pico: Stepper + A4988motorsintermediateRun in simulator →

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.

STM32 Black Pill Blink — free online circuit simulator example on SensbenchSTM32 Black Pill BlinkbasicsbeginnerRun in simulator →STM32 Black Pill (F401) Blink — free online circuit simulator example on SensbenchSTM32 Black Pill (F401) BlinkbasicsbeginnerRun in simulator →STM32 Black Pill: SSD1306 OLED (I2C) — free online circuit simulator example on SensbenchSTM32 Black Pill: SSD1306 OLED (I2C)displaysintermediateRun in simulator →STM32: 7-Segment Counter — free online circuit simulator example on SensbenchSTM32: 7-Segment CounterbasicsbeginnerRun in simulator →[STM32 + STM32] Blue Pill → Black Pill — free online circuit simulator example on Sensbench[STM32 + STM32] Blue Pill → Black PillcommunicationintermediateRun in simulator →STM32 Blue Pill Blink — free online circuit simulator example on SensbenchSTM32 Blue Pill BlinkbasicsbeginnerRun in simulator →STM32: BMP280 Weather Sensor (I2C) — free online circuit simulator example on SensbenchSTM32: BMP280 Weather Sensor (I2C)sensorsintermediateRun in simulator →STM32: Push Button -> LED — free online circuit simulator example on SensbenchSTM32: Push Button -> LEDbasicsbeginnerRun in simulator →STM32 Blue Pill (F103CB) Blink — free online circuit simulator example on SensbenchSTM32 Blue Pill (F103CB) BlinkbasicsbeginnerRun in simulator →STM32: MPU6050 IMU (I2C) — free online circuit simulator example on SensbenchSTM32: MPU6050 IMU (I2C)sensorsintermediateRun in simulator →STM32: SSD1306 OLED Display (I2C) — free online circuit simulator example on SensbenchSTM32: SSD1306 OLED Display (I2C)displaysintermediateRun in simulator →STM32: RGB LED Color Cycle — free online circuit simulator example on SensbenchSTM32: RGB LED Color CyclebasicsbeginnerRun in simulator →STM32: DS1307 RTC Clock (I2C) — free online circuit simulator example on SensbenchSTM32: DS1307 RTC Clock (I2C)sensorsintermediateRun in simulator →STM32 Serial Counter — free online circuit simulator example on SensbenchSTM32 Serial CountercommunicationbeginnerRun in simulator →STM32: Stepper Motor — free online circuit simulator example on SensbenchSTM32: Stepper MotormotorsintermediateRun in simulator →STM32: Slide Switch -> LED — free online circuit simulator example on SensbenchSTM32: Slide Switch -> LEDbasicsbeginnerRun in simulator →STM32: Weather Station (BMP280 + OLED) — free online circuit simulator example on SensbenchSTM32: Weather Station (BMP280 + OLED)sensorsintermediateRun in simulator →[STM32 + ESP32] GPIO Sync — free online circuit simulator example on Sensbench[STM32 + ESP32] GPIO SynccommunicationadvancedRun in simulator →STM32F4 Discovery LED Blink — free online circuit simulator example on SensbenchSTM32F4 Discovery LED BlinkbasicsbeginnerRun in simulator →Netduino 2 Serial Counter — free online circuit simulator example on SensbenchNetduino 2 Serial CountercommunicationbeginnerRun in simulator →Netduino Plus 2 Blink — free online circuit simulator example on SensbenchNetduino Plus 2 BlinkbasicsbeginnerRun in simulator →STM32 Blue Pill: SSD1306 OLED (4-pin I2C) — free online circuit simulator example on SensbenchSTM32 Blue Pill: SSD1306 OLED (4-pin I2C)displaysintermediateRun in simulator →Olimex STM32-H405 Blink — free online circuit simulator example on SensbenchOlimex STM32-H405 BlinkbasicsbeginnerRun in simulator →[STM32 + Arduino] GPIO Mirror — free online circuit simulator example on Sensbench[STM32 + Arduino] GPIO MirrorcommunicationintermediateRun in simulator →[STM32 + Arduino] Serial Link — free online circuit simulator example on Sensbench[STM32 + Arduino] Serial LinkcommunicationintermediateRun in simulator →

Raspberry Pi 3 / 4 / 5 6

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

[Pi 3] Blink an LED — free online circuit simulator example on Sensbench[Pi 3] Blink an LEDbasicsbeginnerRun in simulator →[Pi 3] Running Lights (5 LEDs) — free online circuit simulator example on Sensbench[Pi 3] Running Lights (5 LEDs)basicsintermediateRun in simulator →[Pi 4] Button Toggles LED — free online circuit simulator example on Sensbench[Pi 4] Button Toggles LEDbasicsbeginnerRun in simulator →[Pi 4] RGB LED Color Cycle — free online circuit simulator example on Sensbench[Pi 4] RGB LED Color CyclebasicsintermediateRun in simulator →[Pi 5] PIR Motion Alarm — free online circuit simulator example on Sensbench[Pi 5] PIR Motion AlarmsensorsintermediateRun in simulator →[Pi 5] Traffic Light — free online circuit simulator example on Sensbench[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 Handshake — free online circuit simulator example on Sensbench[2× Pico W] Bidirectional Digital HandshakecommunicationbeginnerRun in simulator →[2× Pico W] Digital GPIO Mirror — free online circuit simulator example on Sensbench[2× Pico W] Digital GPIO MirrorbasicsbeginnerRun in simulator →[2× Pico W] Serial1 Passthrough (UART0) — free online circuit simulator example on Sensbench[2× Pico W] Serial1 Passthrough (UART0)communicationintermediateRun in simulator →[Pi + Arduino] Serial LED Control — free online circuit simulator example on Sensbench[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.

Common-Emitter Amplifier — free online circuit simulator example on SensbenchCommon-Emitter AmplifiercircuitsadvancedRun in simulator →Capacitor Charging Curve — free online circuit simulator example on SensbenchCapacitor Charging CurvecircuitsintermediateRun in simulator →Darlington Pair (High Current) — free online circuit simulator example on SensbenchDarlington Pair (High Current)circuitsadvancedRun in simulator →Half-Wave Rectifier — free online circuit simulator example on SensbenchHalf-Wave RectifiercircuitsintermediateRun in simulator →LED with Current-Limiting Resistor — free online circuit simulator example on SensbenchLED with Current-Limiting ResistorcircuitsbeginnerRun in simulator →MOSFET PWM LED Dimmer — free online circuit simulator example on SensbenchMOSFET PWM LED DimmercircuitsintermediateRun in simulator →LED Bar Graph — free online circuit simulator example on SensbenchLED Bar GraphcircuitsbeginnerRun in simulator →NPN Transistor LED Switch — free online circuit simulator example on SensbenchNPN Transistor LED SwitchcircuitsintermediateRun in simulator →NTC Temperature Sensor — free online circuit simulator example on SensbenchNTC Temperature SensorcircuitsbeginnerRun in simulator →Comparator with LED — free online circuit simulator example on SensbenchComparator with LEDcircuitsintermediateRun in simulator →Difference Amplifier — free online circuit simulator example on SensbenchDifference AmplifiercircuitsadvancedRun in simulator →Inverting Amplifier (LM358) — free online circuit simulator example on SensbenchInverting Amplifier (LM358)circuitsintermediateRun in simulator →Schmitt Trigger — free online circuit simulator example on SensbenchSchmitt TriggercircuitsadvancedRun in simulator →Voltage Follower (Buffer) — free online circuit simulator example on SensbenchVoltage Follower (Buffer)circuitsbeginnerRun in simulator →Parallel Resistors — free online circuit simulator example on SensbenchParallel ResistorscircuitsbeginnerRun in simulator →Photoresistor Light Sensor — free online circuit simulator example on SensbenchPhotoresistor Light SensorcircuitsbeginnerRun in simulator →PNP High-Side Switch — free online circuit simulator example on SensbenchPNP High-Side SwitchcircuitsintermediateRun in simulator →Potentiometer ADC Reader — free online circuit simulator example on SensbenchPotentiometer ADC ReadercircuitsbeginnerRun in simulator →RC Low-Pass Filter — free online circuit simulator example on SensbenchRC Low-Pass FiltercircuitsbeginnerRun in simulator →Reverse Polarity Protection — free online circuit simulator example on SensbenchReverse Polarity ProtectioncircuitsbeginnerRun in simulator →Voltage Divider — free online circuit simulator example on SensbenchVoltage DividercircuitsbeginnerRun in simulator →Wheatstone Bridge — free online circuit simulator example on SensbenchWheatstone BridgecircuitsintermediateRun in simulator →Zener Voltage Regulator — free online circuit simulator example on SensbenchZener Voltage RegulatorcircuitsintermediateRun in simulator →

Logic, Power & Motor Drivers 14

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

AND Gate Alarm — free online circuit simulator example on SensbenchAND Gate AlarmcircuitsbeginnerRun in simulator →Battery Voltage Monitor — free online circuit simulator example on SensbenchBattery Voltage MonitorcircuitsbeginnerRun in simulator →4-bit Binary Counter — free online circuit simulator example on Sensbench4-bit Binary CountercircuitsbeginnerRun in simulator →Full Adder (1-bit) — free online circuit simulator example on SensbenchFull Adder (1-bit)circuitsintermediateRun in simulator →DC Motor Control (L293D) — free online circuit simulator example on SensbenchDC Motor Control (L293D)circuitsintermediateRun in simulator →Motor Speed Control (PWM) — free online circuit simulator example on SensbenchMotor Speed Control (PWM)circuitsintermediateRun in simulator →LM317 Adjustable PSU — free online circuit simulator example on SensbenchLM317 Adjustable PSUcircuitsintermediateRun in simulator →Logic Probe (HIGH/LOW/FLOATING) — free online circuit simulator example on SensbenchLogic Probe (HIGH/LOW/FLOATING)circuitsintermediateRun in simulator →Mixed: MCU + AND gate + transistor (coexistence test) — free online circuit simulator example on SensbenchMixed: MCU + AND gate + transistor (coexistence test)circuitsintermediateRun in simulator →NAND SR Latch — free online circuit simulator example on SensbenchNAND SR LatchcircuitsintermediateRun in simulator →Optocoupler Signal Isolation — free online circuit simulator example on SensbenchOptocoupler Signal IsolationcircuitsintermediateRun in simulator →7805 Regulated Power Supply — free online circuit simulator example on Sensbench7805 Regulated Power SupplycircuitsbeginnerRun in simulator →Relay-Controlled LED — free online circuit simulator example on SensbenchRelay-Controlled LEDcircuitsintermediateRun in simulator →XOR Toggle Detector — free online circuit simulator example on SensbenchXOR Toggle DetectorcircuitsbeginnerRun in simulator →

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