19DecDecember 19, 2025

ESP32 with Servo Motor

A servo motor is a type of motor designed for precise control of angular position, making it ideal for applications like robotics, RC vehicles, automation, and control systems. It’s compact, easy to control using microcontrollers (like ESP32, Arduino, etc.), and widely used in DIY electronics.🔧 1. What is a Servo Motor?A servo motor is an actuator that rotates to a specific angle based on a control signal.✅ Key Characteristics:FeatureDescriptionTypeClosed-loop control systemRotationUsually 0° to 180° (some 360° continuous)PrecisionHigh positional accuracyControl SignalPWM (Pulse Width Modulation)⚙️ 2. Internal Components of a ServoInside a typical...

IoT0 CommentsLike: 0

16DecDecember 16, 2025

ESP32 with DS1307 RTC Module

⏰ What is DS1307 RTC?The DS1307 is a real-time clock IC by Maxim Integrated that keeps track of:SecondsMinutesHours (12 or 24-hour mode)Day, Date, Month, YearAutomatically adjusts for leap years✅ It communicates with microcontrollers using SPI (Serial Peripheral Interface) — unlike the more common DS1307, which uses I2C.🔍 Key FeaturesFeatureDetailsInterfaceSPIVoltage2.0V – 5.5VTimekeepingSeconds, Minutes, Hours, Day, DateBattery backupYes (CR1220 or CR2032 coin cell)OscillatorRequires external 32.768 kHz crystalAlarm + Square WaveBuilt-in (configurable)🧰 Components RequiredComponentDescriptionESP32 boardMicrocontrollerDS1306 RTC moduleWith CR2032 battery and SPI pinsJumper wiresMale-to-female preferredBreadboardFor clean prototypingArduino IDETo program ESP32🔌 DS1307 to ESP32 Wiring...

IoT0 CommentsLike: 0

16DecDecember 16, 2025

Digital Temperature Monitoring: ESP32 + DS18B20 Sensor System

🌡️ What is DS18B20?The DS18B20 is a digital temperature sensor from Maxim Integrated (now Analog Devices), known for:✅ Accurate temperature readings✅ Unique 64-bit serial code (for multiple sensors on one wire)✅ 1-Wire interface (needs only 1 data line + GND + VCC)✅ Waterproof versions available📋 Key FeaturesFeatureDescriptionTemperature Range-55°C to +125°CAccuracy±0.5°C (from -10°C to +85°C)Interface1-Wire digitalResolutionProgrammable: 9 to 12 bitsVoltage3.0V to 5.5VID AddressEach sensor has a unique ID🧰 Components UsedComponentDescriptionESP32 Dev BoardMicrocontrollerDS18B20 SensorWaterproof or standard TO-92 version4.7kΩ ResistorPull-up resistor for 1-WireJumper WiresFor connectionsBreadboard (opt.)For prototyping🔌 DS18B20 Pinout...

IoT0 CommentsLike: 0

16DecDecember 16, 2025

DFPlayer Mini with Esp32

🎵 What is DFPlayer Mini?The DFPlayer Mini is a tiny, standalone MP3 audio player module. It can play audio files (MP3/WAV) stored on a microSD card. You can control it through:Serial communication (UART with ESP32 or Arduino)Built-in IO pins (for button-triggered audio)Library-based commands to control volume, play/pause, next, loop, etc.📦 DFPlayer Mini PinoutPinFunctionVCCPower (3.2V–5V)GNDGroundTXSerial Transmit (connect to ESP32 RX)RXSerial Receive (connect to ESP32 TX)SPK1, SPK2Speaker output (mono, 3W)DAC_L/RStereo line out (for headphones/amp)IO1/IO2Button controlBUSYLOW when playing🔌 Wiring DFPlayer Mini with ESP32🔧 ESP32 to DFPlayer Mini (Serial Connection):DFPlayer PinESP32...

IoT0 CommentsLike: 0

16DecDecember 16, 2025

ESP-NOW with ESP32

📌 What is ESP-NOW?ESP-NOW is a wireless communication protocol developed by Espressif, allowing ESP32 boards to send and receive data directly without Wi-Fi or internet.🧠 Key Features📡 Peer-to-peer communication (up to 20 devices)⚡ Low power and fast (few milliseconds delay)🔐 Encrypted data transmission🚫 No Wi-Fi router or internet needed🔁 Bi-directional communication supported🔌 Where to Use (Use Cases)🎮 Wireless joystick controller🏠 Smart home automation🚨 Personal safety devices (like Safeguard+)🌱 Remote environment sensors🚗 Vehicle-to-vehicle communication🎓 College projects requiring mesh or local network🛠️ Components Needed✅ 2x...

IoT0 CommentsLike: 0