19DecDecember 19, 2025

ESP32 with Gravity Voice Recognition Module

The Gravity Voice Recognition Module is a user-friendly module developed by DFRobot that allows microcontrollers like Arduino or ESP32 to recognize voice commands offline (without internet access). It's ideal for voice-controlled smart devices, robots, automation systems, and other embedded applications.🔧 Key Features:FeatureDetailsOffline Voice RecognitionNo internet or cloud processing required.Custom Command TrainingCan be trained with up to 80 custom commands (user-defined).Predefined Wake WordComes with built-in wake words (like “Hello Robot”).Speaker-IndependentWorks for most users without personalized training.Communication InterfaceSupports both UART and I2C for communication.Language SupportEnglish and Mandarin (depending on firmware version).Compact DesignSmall PCB module...

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19DecDecember 19, 2025

ESP32 Joystick Controlled Robot Using ESP-NOW Protocol & L298N Motor Driver

2025🤖 ESP32 Joystick Controlled Robot Using ESP-NOW Protocol & L298N Motor DriverWireless bot control with speed adjustment via joystick tilt📝 IntroductionIn this project, we built a wireless robot controlled via a joystick and two ESP32 boards using the ESP-NOW communication protocol. Unlike Wi-Fi or Bluetooth, ESP-NOW enables fast, peer-to-peer data transfer between ESP32 devices using MAC addresses, making it ideal for real-time robot control.The robot’s movement and speed are controlled through analog joystick input, and an L298N motor driver handles motor driving on the receiving end.🔧 Hardware UsedComponentDescription2x ESP32One for...

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19DecDecember 19, 2025

Tilt Sensor Module SW520D

🤔 What is a Tilt Sensor?A tilt sensor (also called a ball switch or mercury switch) is a digital switch that changes its output based on orientation. When tilted beyond a certain angle, the internal mechanism (metal ball or mercury drop) makes or breaks contact, changing the signal.📌 Key Features:Simple ON/OFF outputDetects if the object is upright or tiltedDigital signal (HIGH or LOW)No orientation angle info — only tilt or no tilt📦 Types of Tilt Sensors:TypeInside itBehaviorMetal ball typeRolling metal ballConducts when levelMercury typeLiquid metal dropConducts when tiltedMEMS Tilt...

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19DecDecember 19, 2025

ESP32 with AI Thinker GP-02 GPS Module

✅ What is AI Thinker GP-02?The AI Thinker GP-02 is a GNSS (GPS) module, designed to work with satellite navigation systems to provide:Real-time location data (latitude, longitude)SpeedAltitudeTime (UTC)and moreIt supports multiple satellite constellations:GPS (USA)GLONASS (Russia)Galileo (EU)BeiDou (China)It communicates using UART (Serial) and is ideal for ESP32, Arduino, STM32, etc.🧩 Features of GP-02 (AI Thinker GNSS Module):FeatureDetailCommunicationUART (TX/RX)ProtocolNMEA0183Baud Rate9600 bps (default)Voltage3.3V logic and powerSatellite supportGPS, GLONASS, BDS, GalileoAccuracy~2.5mUpdate Rate1Hz (default), can be increased📌 Pinout of AI Thinker GP-02:GP-02 PinFunctionVCC3.3VGNDGroundTXSerial TX (data from GPS to ESP32)RXSerial RX (data from ESP32 to GPS)🧠...

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19DecDecember 19, 2025

ESP32 with NEO-8M GPS Module

📡 What is the NEO-8M GPS Module?The NEO-8M is a high-precision GNSS GPS receiver by u-blox, capable of receiving data from:GPS (USA)GLONASS (Russia)Galileo (EU)BeiDou (China)It outputs serial (UART) data in NMEA sentences, giving real-time:LatitudeLongitudeAltitudeSpeedTime & DateNumber of satellitesFix quality🧰 Components Required:ESP32 (DevKit v1)NEO-8M GPS Module (with or without ceramic antenna)Jumper wiresOptional: OLED display or SD card module⚙️ NEO-8M GPS Module Pinout:GPS PinFunctionConnect to ESP32VCC3.3V / 5V3.3V or 5V (check module specs)GNDGroundGNDTXTransmit (output)GPIO16 (RX)RXReceive (input)GPIO17 (TX)📌 Use SoftwareSerial if you want to keep default Serial for debugging.🛠️ Wiring Diagram:GPS Module ESP32 ---------- ----- VCC ---------->...

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