Learn how to build an ESP32 Interactive Voice Response System that works offline. Call a number, press keys, control appliances. Full circuit, code & block diagram.
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ESP32-CAM Attendance System with WhatsApp Alerts
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Step-by-step ESP32-CAM attendance system tutorial with OLED display, rotary encoder, and WhatsApp notifications using CircuitDigest Cloud. Includes wiring, full source code, and FAQs.
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Build an Automatic Waste Segregation System Using Arduino
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Build an automatic waste segregation system using Arduino UNO Q, Edge Impulse & a servo motor. Sorts Paper, Plastic & Cardboard-full circuit & code inside.
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Arduino UNO Q Guide: Specifications & Face Detection
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Explore Arduino UNO Q specifications, block diagram, power supply details, and a step-by-step face detection tutorial using Arduino App Lab. Perfect for beginners and experts alike.
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A Simple DC-DC Boost Converter Circuit using 555 Timer IC
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In this project we build a simple boost converter circuit using a 555 timer IC. Boost converter is a non-isolated type of switch mode power supply that is used to step-up the voltage.
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Full Adder Circuit: Theory, Truth Table & Construction
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In a Full Adder Circuit, we can add a carry-in bit along with the two binary numbers. We can also add multiple-bit binary numbers by cascading the full adder circuits, which we covered in this tutorial
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Interfacing TMC2209 Stepper Motor Driver with Arduino UNO
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Learn how to control stepper motors using TMC2209 and Arduino UNO. This beginner-friendly guide covers wiring, code, microstepping, and sensorless homing basics. Useful for 3D printers, CNC machines, camera sliders, and smart home automation.
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How to Interface RTC Module with Arduino to build Digital Clock
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In this article, we discussed how the RTC Module works and how we can interface it with Arduino to build a DIY Arduino digital clock.
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Soil Moisture Sensor Arduino: Circuit Diagram, Code & Projects Guide
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Complete Arduino soil moisture sensor tutorial with circuit diagrams, working code, troubleshooting tips and project ideas. Learn wiring, calibration & build automatic watering systems.
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Building your own Sun Tracking Solar Panel using an Arduino
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In this Arduino project, we will make a sun tracking system which will help the solar panels generate maximum power.
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How to use L298N Motor Driver with Arduino?
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Learn how to control a DC motor using the L298N motor driver with Arduino. This step-by-step guide covers motor direction control (forward & backward) and braking using PWM. Ideal for robotics and embedded systems beginners!
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- Arduino embedded systems
- Arduino motor control
- Arduino motor driver code
- Arduino motor tutorial
- dc motor
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- DIY Arduino motor projects
- H-Bridge motor driver
- L298N motor driver
- L298N pinout
- motor driver Arduino
- motor speed control
- motor speed control Arduino
- PWM control
- PWM motor control
- robotics with Arduino
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How ESP32-CAM Email Alert: Capture & Send Images on Motion Detection
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Build an ESP32-CAM email alert system that captures images on motion detection and sends them to your inbox via CircuitDigest Cloud , no SMTP, no subscription required.
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ESP32 Cam Capture Image and Send Email in Real-Time
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ESP32 Cam Capture Images and Send Emails in Real-Time with WiFi, OLED Display, and Push Buttons for Secure IoT Photo Alerts.
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ESP32 Bluetooth Jammer with NRF24L01 – DIY Build Guide
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Build a dual NRF24L01 ESP32 Bluetooth jammer from scratch. Full circuit diagram, pin connections, firmware flashing & video demo. Educational RF project for makers & engineers.
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SU-03T Offline Voice Recognition Module Setup Guide
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Build an offline voice recognition system using the low-cost SU-03T module. Full wiring, SDK setup & firmware flash guide. The SU-03T is the cheapest alternative to the VC-02 offline voice module
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Smart Grid in IoT: Build with Arduino UNO R4 & PZEM-004T
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Build a smart grid IoT system using Arduino UNO R4 WiFi and PZEM-004T to monitor voltage, current, power, and energy with real-time cloud tracking.
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ESP32-CAM WhatsApp: Send Images Instantly via IoT
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Learn how to build an ESP32-CAM WhatsApp system that captures and sends images in seconds using CircuitDigest Cloud API. No GSM needed. Full code, circuit diagram & GitHub included.
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Real-Time Hand Gesture Control Robot Using OpenCV and Arduino
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Build a real-time hand gesture control robot using OpenCV, MediaPipe, Arduino Nano & nRF24L01. Complete project source code, circuit diagrams, and step-by-step guide.
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DIY ESP32 Speaking Alarm Clock with AI Voice & Wi-Fi
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Build a smart ESP32 speaking alarm clock using XIAO ESP32-S3, Wit.ai TTS & MAX98357A. Announces time & custom messages aloud. Step-by-step wiring, code & web UI guide.
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DIY Handheld Arduino Game Console Full Build Guide 10 Games
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Build a pocket-sized Arduino game console with 10 arcade games, Snake, Tetris, Pacman & more. Full wiring diagram, Arduino code & step-by-step assembly guide included.
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