Explore Smart Thermostat BME280 Sensor Line Following Robot 49 Projects

ESP32 Engine

Learn ESP32 by building real projects.

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ESP32 development workspace with breadboard, relays, and display

49Projects 18Guides 8Components 100%Free Responsive Real Hardware

What engineers build here.

Weather Station — ESP32 + DHT22

Smart Irrigation — Soil Sensor + Relay

Motion Security — ESP32 + PIR

Smart Thermostat — DHT22 + Relay

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Best First

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Advanced Upgrade

ESP32 OLED Weather Clock

Build a Wi-Fi clock that shows NTP time and weather-style readings on a crisp OLED display.

Beginner90-150 minAges 12+

Wire and test the NTP time and optional BME280 sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control SSD1306 OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

All recommendations

Student: First ESP32 Project

Best First

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Advanced Upgrade

ESP32 OLED Weather Clock

Build a Wi-Fi clock that shows NTP time and weather-style readings on a crisp OLED display.

Beginner90-150 minAges 12+

Wire and test the NTP time and optional BME280 sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control SSD1306 OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Student: Sensors and Data

Best First

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 Soil Moisture Monitor

A plant monitor that reads a capacitive soil sensor, converts raw ADC values into a moisture percentage, and uses LED…

Beginner60-90 minAges 12+

Read an analog soil moisture sensor with an ESP32 ADC pin.Calibrate dry and wet readings for your own sensor and soil.Convert raw ADC values into a useful percentage.Use LEDs or a buzzer as clear status outputs.

Advanced Upgrade

ESP32 IoT Weather Station: BME280 Dashboard and Code

Build an ESP32 IoT weather station with BME280 temperature, humidity, pressure readings, I2C wiring, Arduino code, an…

Beginner60-90 minAges 12+

Wire and test the BME280 environmental sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control Serial Monitor and optional OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Student: Smart Home and IoT

Best First

ESP32 Water Leak Detector

A low-voltage water leak alarm that detects moisture on a sensor strip, sounds a buzzer, and can later send alerts ov…

Beginner50-80 minAges 12+

Detect water using analog and digital sensor outputs.Understand why resistive water probes corrode over time.Create a safe local buzzer/LED alarm.Choose sensor placement for real leaks.

Next Challenge

ESP32 Smart Irrigation System

Build a plant watering controller that reads soil moisture and switches a pump or valve only when the soil is dry.

Beginner90-150 minAges 12+

Wire and test the soil moisture probe before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control relay-controlled pump using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 MQTT Sensor Dashboard

Build an ESP32 MQTT dashboard that publishes DHT22 temperature and humidity to local broker topics for Node-RED, Home…

Intermediate90-120 minAges 12+

Wire and read a DHT22 sensor.Connect ESP32 to Wi-Fi safely in Arduino code.Publish readings to an MQTT topic.Understand broker, publisher, subscriber, and topic names.

Student: Robotics and Motion

Best First

ESP32 Line Following Robot

Build a two-motor robot that reads line sensors and steers itself along a dark track.

Intermediate90-150 minAges 12+

Wire and test the left and right IR line sensors before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Next Challenge

ESP32 WiFi Robot Controller

Build a browser-controlled ESP32 robot that drives motors from Wi-Fi commands served by the board itself.

Intermediate90-150 minAges 12+

Wire and test the web control commands before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control dual motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 Educational Servo Arm Controller (3-DOF)

Build a small joystick-controlled 3-DOF servo arm on ESP32 with safe angle limits, incremental motion, and separate s…

Intermediate90-120 minAges 13+

Servo PWMJoystick ADCAngle constraintsSeparate power domains

Student: Cameras and Computer Vision

Best First

ESP32 Camera Capture Server

An ESP32-CAM project that captures images from the OV2640 camera and serves or stores them for inspection, timelapse…

Intermediate90-120 minAges 12+

Program an ESP32-CAM safely with an FTDI adapter.Understand boot mode using IO0.Capture a camera frame and serve or store it.Recognize power-related camera failures.

Next Challenge

ESP32-CAM QR Code Scanner

An ESP32-CAM scanner that captures frames and decodes QR codes for access demos, inventory labels, or classroom ident…

Intermediate90-130 minAges 12+

Program and boot an ESP32-CAM correctly.Capture frames suitable for QR decoding.Understand why lighting and focus affect recognition.Print decoded text to Serial Monitor.

Advanced Upgrade

Build an ESP32-CAM Face Detection Privacy Demo

Build a local ESP32-CAM face detection demo that distinguishes detection from recognition, with privacy, lighting, me…

Advanced90-120 minAges 14+

ESP32-CAM pin mapLocal Wi-Fi cameraFace detection limitsPrivacy consent

Student: AI and Advanced Builds

Best First

Build an APDS-9960 Gesture Control Demo

Build a technically honest ESP32 gesture demo with APDS-9960 I2C wiring, interrupt handling, LED outputs, and false-t…

Intermediate60-75 minAges 12+

I2C wiringInterrupt inputLED outputsSensor limitations

Next Challenge

ESP32-CAM Color Object Detector Demo

Build a bounded ESP32-CAM color object presence demo with OV2640 RGB565 frames, privacy notes, and clear limits betwe…

Intermediate90-120 minAges 13+

ESP32-CAM setupRGB565 pixelsThreshold tuningAI claim limits

Advanced Upgrade

ESP32 Low-Voltage Energy Meter Demo

Build a low-voltage ESP32 energy-measurement demonstration using ADC readings and relative power calculations.

Intermediate90-120 minAges 13+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Parent: First ESP32 Project

Best First

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 Water Leak Detector

A low-voltage water leak alarm that detects moisture on a sensor strip, sounds a buzzer, and can later send alerts ov…

Beginner50-80 minAges 12+

Detect water using analog and digital sensor outputs.Understand why resistive water probes corrode over time.Create a safe local buzzer/LED alarm.Choose sensor placement for real leaks.

Advanced Upgrade

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Parent: Sensors and Data

Best First

ESP32 Soil Moisture Monitor

A plant monitor that reads a capacitive soil sensor, converts raw ADC values into a moisture percentage, and uses LED…

Beginner60-90 minAges 12+

Read an analog soil moisture sensor with an ESP32 ADC pin.Calibrate dry and wet readings for your own sensor and soil.Convert raw ADC values into a useful percentage.Use LEDs or a buzzer as clear status outputs.

Next Challenge

ESP32 OLED Weather Clock

Build a Wi-Fi clock that shows NTP time and weather-style readings on a crisp OLED display.

Beginner90-150 minAges 12+

Wire and test the NTP time and optional BME280 sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control SSD1306 OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 Air Quality Monitor

An ESP32 monitor that reads an MQ135 gas sensor, prints live raw values, and drives an alert output or fan relay when…

Beginner75-100 minAges 12+

Read a gas sensor as an analog input.Create a fresh-air baseline before choosing an alert threshold.Drive a relay or fan control signal safely from an ESP32 GPIO.Understand why gas sensors need warm-up and calibration.

Parent: Smart Home and IoT

Best First

ESP32 Water Leak Detector

A low-voltage water leak alarm that detects moisture on a sensor strip, sounds a buzzer, and can later send alerts ov…

Beginner50-80 minAges 12+

Detect water using analog and digital sensor outputs.Understand why resistive water probes corrode over time.Create a safe local buzzer/LED alarm.Choose sensor placement for real leaks.

Next Challenge

ESP32 Smart Thermostat: Temperature Control and Code

Build a safe low-voltage ESP32 smart thermostat with DHT22 or BME280 readings, GPIO26 relay control, hysteresis, wiri…

Intermediate90-120 minAges 12+

Wire and test the DHT22 or BME280 temperature sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control relay module or low-voltage fan driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 Smart Irrigation System

Build a plant watering controller that reads soil moisture and switches a pump or valve only when the soil is dry.

Beginner90-150 minAges 12+

Wire and test the soil moisture probe before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control relay-controlled pump using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Parent: Robotics and Motion

Best First

ESP32 Line Following Robot

Build a two-motor robot that reads line sensors and steers itself along a dark track.

Intermediate90-150 minAges 12+

Wire and test the left and right IR line sensors before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Next Challenge

ESP32 Smart Parking Sensor

A parking-bay detector that measures distance with an HC-SR04 ultrasonic sensor and uses LEDs or a dashboard output t…

Beginner60-90 minAges 12+

Trigger an HC-SR04 sensor from an ESP32.Protect the ESP32 input from a 5 V echo signal.Convert echo time into distance in centimeters.Choose a parking threshold from measured data.

Advanced Upgrade

ESP32 WiFi Robot Controller

Build a browser-controlled ESP32 robot that drives motors from Wi-Fi commands served by the board itself.

Intermediate90-150 minAges 12+

Wire and test the web control commands before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control dual motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Parent: Cameras and Computer Vision

Best First

ESP32 Camera Capture Server

An ESP32-CAM project that captures images from the OV2640 camera and serves or stores them for inspection, timelapse…

Intermediate90-120 minAges 12+

Program an ESP32-CAM safely with an FTDI adapter.Understand boot mode using IO0.Capture a camera frame and serve or store it.Recognize power-related camera failures.

Next Challenge

ESP32-CAM QR Code Scanner

An ESP32-CAM scanner that captures frames and decodes QR codes for access demos, inventory labels, or classroom ident…

Intermediate90-130 minAges 12+

Program and boot an ESP32-CAM correctly.Capture frames suitable for QR decoding.Understand why lighting and focus affect recognition.Print decoded text to Serial Monitor.

Advanced Upgrade

ESP32-CAM Local Network Camera Demo

Build a local ESP32-CAM camera page with AI-Thinker pin mapping, stable 5 V power, placeholder Wi-Fi credentials, and…

Intermediate60-75 minAges 13+

ESP32-CAM pin mappingLocal web serverWi-Fi setupPrivacy boundaries

Parent: AI and Advanced Builds

Best First

Build an APDS-9960 Gesture Control Demo

Build a technically honest ESP32 gesture demo with APDS-9960 I2C wiring, interrupt handling, LED outputs, and false-t…

Intermediate60-75 minAges 12+

I2C wiringInterrupt inputLED outputsSensor limitations

Next Challenge

ESP32 LoRa Remote Sensor Node (Point-to-Point)

Build a two-node ESP32 LoRa sensor link with real point-to-point radio, legal frequency checks, antenna safety, and p…

Intermediate90-120 minAges 12+

SPI wiringRF packet validationDHT22 readingsLegal radio awareness

Advanced Upgrade

ESP32 Low-Voltage Energy Meter Demo

Build a low-voltage ESP32 energy-measurement demonstration using ADC readings and relative power calculations.

Intermediate90-120 minAges 13+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Teacher: First ESP32 Project

Best First

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Advanced Upgrade

ESP32 RGB LED Pattern Controller

Learn PWM color mixing with a single common-cathode RGB LED and a button-driven non-blocking pattern state machine on…

Beginner45-60 minAges 10+

PWMButton debouncingState machinesAdditive color

Teacher: Sensors and Data

Best First

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 IoT Weather Station: BME280 Dashboard and Code

Build an ESP32 IoT weather station with BME280 temperature, humidity, pressure readings, I2C wiring, Arduino code, an…

Beginner60-90 minAges 12+

Wire and test the BME280 environmental sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control Serial Monitor and optional OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 Air Quality Monitor

An ESP32 monitor that reads an MQ135 gas sensor, prints live raw values, and drives an alert output or fan relay when…

Beginner75-100 minAges 12+

Read a gas sensor as an analog input.Create a fresh-air baseline before choosing an alert threshold.Drive a relay or fan control signal safely from an ESP32 GPIO.Understand why gas sensors need warm-up and calibration.

Teacher: Smart Home and IoT

Best First

ESP32 Smart Irrigation System

Build a plant watering controller that reads soil moisture and switches a pump or valve only when the soil is dry.

Beginner90-150 minAges 12+

Wire and test the soil moisture probe before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control relay-controlled pump using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Next Challenge

ESP32 MQTT Sensor Dashboard

Build an ESP32 MQTT dashboard that publishes DHT22 temperature and humidity to local broker topics for Node-RED, Home…

Intermediate90-120 minAges 12+

Wire and read a DHT22 sensor.Connect ESP32 to Wi-Fi safely in Arduino code.Publish readings to an MQTT topic.Understand broker, publisher, subscriber, and topic names.

Advanced Upgrade

ESP32 Smart Street Light

A light-sensing ESP32 controller that turns a lamp output on at night and can use motion sensing to brighten only whe…

Beginner70-100 minAges 12+

Read an LDR voltage divider with ESP32 analog input.Use a threshold and hysteresis for stable day/night control.Drive a relay or transistor-controlled lamp output safely.Understand why sensor placement matters outdoors.

Teacher: Robotics and Motion

Best First

ESP32 Line Following Robot

Build a two-motor robot that reads line sensors and steers itself along a dark track.

Intermediate90-150 minAges 12+

Wire and test the left and right IR line sensors before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Next Challenge

ESP32 Educational Servo Arm Controller (3-DOF)

Build a small joystick-controlled 3-DOF servo arm on ESP32 with safe angle limits, incremental motion, and separate s…

Intermediate90-120 minAges 13+

Servo PWMJoystick ADCAngle constraintsSeparate power domains

Advanced Upgrade

ESP32 Smart Parking Sensor

A parking-bay detector that measures distance with an HC-SR04 ultrasonic sensor and uses LEDs or a dashboard output t…

Beginner60-90 minAges 12+

Trigger an HC-SR04 sensor from an ESP32.Protect the ESP32 input from a 5 V echo signal.Convert echo time into distance in centimeters.Choose a parking threshold from measured data.

Teacher: Cameras and Computer Vision

Best First

ESP32 Camera Capture Server

An ESP32-CAM project that captures images from the OV2640 camera and serves or stores them for inspection, timelapse…

Intermediate90-120 minAges 12+

Program an ESP32-CAM safely with an FTDI adapter.Understand boot mode using IO0.Capture a camera frame and serve or store it.Recognize power-related camera failures.

Next Challenge

ESP32-CAM QR Code Scanner

An ESP32-CAM scanner that captures frames and decodes QR codes for access demos, inventory labels, or classroom ident…

Intermediate90-130 minAges 12+

Program and boot an ESP32-CAM correctly.Capture frames suitable for QR decoding.Understand why lighting and focus affect recognition.Print decoded text to Serial Monitor.

Advanced Upgrade

ESP32-CAM Color Object Detector Demo

Build a bounded ESP32-CAM color object presence demo with OV2640 RGB565 frames, privacy notes, and clear limits betwe…

Intermediate90-120 minAges 13+

ESP32-CAM setupRGB565 pixelsThreshold tuningAI claim limits

Teacher: AI and Advanced Builds

Best First

Build an APDS-9960 Gesture Control Demo

Build a technically honest ESP32 gesture demo with APDS-9960 I2C wiring, interrupt handling, LED outputs, and false-t…

Intermediate60-75 minAges 12+

I2C wiringInterrupt inputLED outputsSensor limitations

Next Challenge

ESP32-CAM Color Object Detector Demo

Build a bounded ESP32-CAM color object presence demo with OV2640 RGB565 frames, privacy notes, and clear limits betwe…

Intermediate90-120 minAges 13+

ESP32-CAM setupRGB565 pixelsThreshold tuningAI claim limits

Advanced Upgrade

ESP32 Lightning Detector: AS3935 Sensor Demo

Build an ESP32 AS3935 lightning sensor demo with SPI wiring, interrupt handling, OLED output, noise/disturber classif…

Advanced75-90 minAges 14+

SPI wiringInterrupt handlingNoise classificationSafety limitations

Maker: First ESP32 Project

Best First

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

Next Challenge

ESP32 IoT Weather Station: BME280 Dashboard and Code

Build an ESP32 IoT weather station with BME280 temperature, humidity, pressure readings, I2C wiring, Arduino code, an…

Beginner60-90 minAges 12+

Wire and test the BME280 environmental sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control Serial Monitor and optional OLED display using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Advanced Upgrade

ESP32 MQTT Sensor Dashboard

Build an ESP32 MQTT dashboard that publishes DHT22 temperature and humidity to local broker topics for Node-RED, Home…

Intermediate90-120 minAges 12+

Wire and read a DHT22 sensor.Connect ESP32 to Wi-Fi safely in Arduino code.Publish readings to an MQTT topic.Understand broker, publisher, subscriber, and topic names.

Maker: Sensors and Data

Best First

ESP32 Vibration Monitor

Build an ESP32 vibration monitor with MPU6050 accelerometer. From threshold alerts to FFT spectrum analysis and MQTT…

Intermediate75-90 minAges 13+

I2C sensor wiringAcceleration magnitudeThreshold calibrationFalse-trigger analysis

Next Challenge

ESP32 Lightning Detector: AS3935 Sensor Demo

Build an ESP32 AS3935 lightning sensor demo with SPI wiring, interrupt handling, OLED output, noise/disturber classif…

Advanced75-90 minAges 14+

SPI wiringInterrupt handlingNoise classificationSafety limitations

Advanced Upgrade

Build an Isolated AC Current Monitor Prototype

Build a bounded ESP32 AC current monitor prototype with an SCT-013 clamp, ADC biasing, calibration limits, and strict…

Advanced90-120 minAges 14+

Isolated sensingADC biasingRMS estimateCalibration limits

Maker: Smart Home and IoT

Best First

ESP32 MQTT Sensor Dashboard

Build an ESP32 MQTT dashboard that publishes DHT22 temperature and humidity to local broker topics for Node-RED, Home…

Intermediate90-120 minAges 12+

Wire and read a DHT22 sensor.Connect ESP32 to Wi-Fi safely in Arduino code.Publish readings to an MQTT topic.Understand broker, publisher, subscriber, and topic names.

Next Challenge

Build a Low-Voltage Smart Power Strip Simulator

Build a low-voltage ESP32 smart power strip simulator with MOSFET outputs on GPIO25, GPIO26, GPIO27, GPIO33 and no ma…

Intermediate60-75 minAges 12+

MOSFET low-side switchingFail-safe startupLocal web controlsShared-ground wiring

Advanced Upgrade

ESP32 Home Climate Automation

Build a room climate controller that reads environmental data and automatically controls a fan, vent, or humidifier i…

Beginner90-150 minAges 12+

Wire and test the DHT22 or BME280 climate sensor before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control relay output using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Maker: Robotics and Motion

Best First

ESP32 WiFi Robot Controller

Build a browser-controlled ESP32 robot that drives motors from Wi-Fi commands served by the board itself.

Intermediate90-150 minAges 12+

Wire and test the web control commands before connecting the rest of the circuit.Map each signal to a named ESP32 GPIO and keep the code constants readable.Control dual motor driver using a clear threshold or command instead of hidden magic numbers.Use Serial Monitor as an engineering tool, not only as a success message.

Next Challenge

ESP32 Educational Servo Arm Controller (3-DOF)

Build a small joystick-controlled 3-DOF servo arm on ESP32 with safe angle limits, incremental motion, and separate s…

Intermediate90-120 minAges 13+

Servo PWMJoystick ADCAngle constraintsSeparate power domains

Advanced Upgrade

Build a Low-Voltage CNC Motion Controller Demo

Build a bounded ESP32 CNC motion-control demo with A4988 STEP/DIR wiring, separate motor power, current-limit setup…

Advanced90-120 minAges 14+

STEP/DIR signalingExternal motor driverCurrent limitingMotion safety

Maker: Cameras and Computer Vision

Best First

ESP32 Camera Capture Server

An ESP32-CAM project that captures images from the OV2640 camera and serves or stores them for inspection, timelapse…

Intermediate90-120 minAges 12+

Program an ESP32-CAM safely with an FTDI adapter.Understand boot mode using IO0.Capture a camera frame and serve or store it.Recognize power-related camera failures.

Next Challenge

Build an ESP32-CAM Face Detection Privacy Demo

Build a local ESP32-CAM face detection demo that distinguishes detection from recognition, with privacy, lighting, me…

Advanced90-120 minAges 14+

ESP32-CAM pin mapLocal Wi-Fi cameraFace detection limitsPrivacy consent

Advanced Upgrade

ESP32-CAM Color Object Detector Demo

Build a bounded ESP32-CAM color object presence demo with OV2640 RGB565 frames, privacy notes, and clear limits betwe…

Intermediate90-120 minAges 13+

ESP32-CAM setupRGB565 pixelsThreshold tuningAI claim limits

Maker: AI and Advanced Builds

Best First

ESP32-CAM Color Object Detector Demo

Build a bounded ESP32-CAM color object presence demo with OV2640 RGB565 frames, privacy notes, and clear limits betwe…

Intermediate90-120 minAges 13+

ESP32-CAM setupRGB565 pixelsThreshold tuningAI claim limits

Next Challenge

Build an APDS-9960 Gesture Control Demo

Build a technically honest ESP32 gesture demo with APDS-9960 I2C wiring, interrupt handling, LED outputs, and false-t…

Intermediate60-75 minAges 12+

I2C wiringInterrupt inputLED outputsSensor limitations

Advanced Upgrade

ESP32 LoRa Remote Sensor Node (Point-to-Point)

Build a two-node ESP32 LoRa sensor link with real point-to-point radio, legal frequency checks, antenna safety, and p…

Intermediate90-120 minAges 12+

SPI wiringRF packet validationDHT22 readingsLegal radio awareness

Start Here

Three safe beginner projects

ESP32 Learning Trainer Board

Classroom ESP32 trainer with a push button on GPIO12 and status LED on GPIO14.

Repeatable bench practice with simple input, output, and Serial feedback.

Beginner45-60 minAges 10+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

ESP32 Distance Monitoring System

Measure distance with an HC-SR04 on ESP32 using TRIG, ECHO through a voltage divider, and a buzzer alert.

Visible sensor readings and a clear alert make debugging easy to see.

Beginner60-75 minAges 11+

Wire the exact GPIO pins used by the sketch.Run the starter code and compare output with the wiring table.Explain the main sensor or input signal in plain language.Troubleshoot one wiring mistake using Serial Monitor evidence.

ESP32 Water Leak Detector

A low-voltage water leak alarm that detects moisture on a sensor strip, sounds a buzzer, and can later send alerts ov…

Safe low-voltage sensing with a practical household-style result.

Beginner50-80 minAges 12+

Detect water using analog and digital sensor outputs.Understand why resistive water probes corrode over time.Create a safe local buzzer/LED alarm.Choose sensor placement for real leaks.

Popular learning paths

Pick a skill path

ESP32 Basics

Start with GPIO, wiring habits, and short missions.

Open path Featured: ESP32 Learning Trainer Board

Sensors and Monitoring

Read distance, moisture, air, weather, and other real-world signals.

Open path Featured: ESP32 Distance Monitoring System

IoT and Automation

Move from local tests to MQTT, dashboards, alerts, and control.

Open path Featured: ESP32 MQTT Sensor Dashboard

Robotics

Practice motor control, feedback, and motion decisions.

Open path Featured: ESP32 Line Following Robot

ESP32-CAM

Learn camera power, capture, QR scanning, and honest vision limits.

Open path Featured: ESP32 Camera Capture Server

Classroom Builds

Use repeatable projects with visible outcomes and discussion prompts.

Open path Featured: ESP32 Learning Trainer Board

Build, experiment, upgrade

Grow one stable project at a time

Build

Complete a working base project and verify it with the wiring table and code.

Experiment

Change one input, threshold, or output and observe the result before adding more parts.

Upgrade

Extend a stable project with a display, dashboard, alert, or next challenge.

For adults helping learners

Parents and teachers get clear next steps

Parents

Start with low-voltage projects, supervise wiring changes, and ask learners to explain what changed before powering the circuit again.

Safe beginner starting points
Supervision notes inside fully reviewed projects
Plain-language learning outcomes

Teachers

Use compact missions and fully reviewed projects for short classroom experiments, skill progression, and evidence-based troubleshooting.

Classroom-suitable project paths
Experiment prompts and testing checklists
Progression from GPIO to IoT

Choose Your Journey

Three paths.
One destination: maker.

The Method

Learn. Build. Ship.

Every project on ESP32 Engine follows a three-phase progression — from understanding the parts to shipping something real.

01

Learn

Only what you need for the next step — focused theory through guided missions, not textbook chapters.

02

Build

Build something real from wire to firmware. Every project ends with a working circuit you fully understand.

03

Ship

Go beyond the breadboard — publish data to the web, add a display, and grow toward connected devices.

Mission Track — 16 missions Explore all guides

Mission 01 Mission 02 Mission 03Mission 04Mission 08Mission 12

ESP32 Academy

Course 01 — ESP32 Foundations

A structured learning journey from your first LED to confident digital inputs.

Foundation Progress

Mission 01Blink LEDFoundation Course step marked complete.Complete Mission 02Button Controls LEDFoundation Course step marked complete.Complete Mission 03Digital Inputs & Floating PinsFoundation Course step marked complete.Complete

Mission 04Pull-up vs Pull-down ResistorsComing next in the Foundation Course.Coming Next

Continue Learning

Academy Links

Learning PathsChoose Beginner, IoT, Robotics, Smart Home, and more.Open Foundation RoadmapSee the full mission list and continue in order.View

Launch picks

Top projects, guides, and components

Hand-picked from the live catalog — start with any row below.

Projects

FeaturedESP32 IoT Weather Station: BME280 Dashboard and CodeBuild an ESP32 IoT weather station with BME280 temperature, humidity, pressure readings…IoT FeaturedESP32 Smart Thermostat: Temperature Control and CodeBuild a safe low-voltage ESP32 smart thermostat with DHT22 or BME280 readings, GPIO26 r…Smart Home FeaturedESP32 Line Following RobotBuild a two-motor robot that reads line sensors and steers itself along a dark track.Robotics

All projects

Guides

Mission 1Blink an LED with ESP32Your first real ESP32 project — one LED, a few wires, and code you write yourself. Le…Guide Mission 2Button Controls LED with ESP32Make your ESP32 react to your hand. In this mission a push button becomes an input, a…Guide Mission 3Understanding Digital Inputs and Floating PinsYour button worked in Mission 02. Now you will learn the electronics behind it: why a…Guide

All guides

Components

DHT22 Temperature & Humidity SensorDigital temperature and humidity sensor for ESP32 weather stations, room monitors, gr…Sensors BME280 Environmental SensorPrecision I2C environmental sensor that measures temperature, humidity, and barometri…Sensors ESP32 DevKit BoardBeginner-friendly ESP32 development board with USB programming, Wi-Fi, Bluetooth, 3.3…Boards

All components

Mission 01 Beginner 10–15 min

Blink an LED with ESP32

Your first real ESP32 project — one LED, a few wires, and code you write yourself. Let's make it blink!

A working LED circuit on a breadboard
A blink program you write and fully understand
The confidence and habits to tackle the next mission

Start Mission 01

Why ESP32 Engine

Built differently.
On purpose.

Open forever
No paywalls. No login required. No premium tier. Every guide, project, and component page is free.
Clear difficulty labels
Each public project shows the difficulty level supported by its wiring, code, and source content.
Built for parents
Safety notes, simple explanations, and age-appropriate language. Designed for supervised learning from age 10+.
Ready for classrooms
Structured missions, printable notes, and content aligned to hands-on STEM learning standards.
Works on any device
Every page is mobile-first — follow a guide on your phone while you build at the bench.
Made for real making
Every guide has wiring tables, copy-paste Arduino code, a troubleshooting section, and a real working output.

Platform Today

49Projects

16Academy Missions

8Components

100%Free

More missions, projects, and components added every month.

Keep exploring

All Projects (49)Guides (18)Components (8)Categories Learning/Missions Parents Teachers

Your first project
ships in two hours.

No prior experience needed.
A USB cable and curiosity are enough.

Start Mission 01 — Free

No account required to begin.