12DecDecember 12, 2025

ESP-NOW with ESP32

What is ESP-NOW?ESP-NOW is a wireless communication protocoldeveloped 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 ESP32...

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12DecDecember 12, 2025

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

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 robotcontrolled via a joystick and two ESP32 boardsusing 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 sending...

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10DecDecember 10, 2025

ESP32 with MAX30100 HEART SENSOR

Heart Rate & SpO₂ Sensor (MAX30100/MAX30102)🔬 Pulse Sensor | SpO₂ Monitor | Wearable Health TechThe MAX30100/MAX30102 is a digital pulse oximeter and heart-rate sensor developed by Maxim Integrated. It’s commonly used in fitness bands, medical devices, and IoT-based health monitoring systems. It combines two key measurements in one module: heart rate (BPM) and blood oxygen saturation (SpO₂ %).🔧 Key FeaturesFeatureDescriptionHeart Rate Range30 to 240 BPMSpO₂ Range70 to 100%LED WavelengthsRed (660nm), IR (940nm)InterfaceI²CSupply Voltage1.8V to 3.3V (VIN can tolerate 5V in some modules)Built-in AlgorithmPulse detection, SpO₂ calculationLow PowerIdeal for wearable...

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15NovNovember 15, 2025

Interfacing IR Sensor with Raspberry Pi Pico Using MicroPython – Complete Guide

Here is a complete, ready-to-publish WordPress blog article on using Raspberry Pi Pico with an IR Sensor using MicroPython. It includes headings, formatting, code blocks, images suggestions, and SEO-friendly content.Interfacing IR Sensor with Raspberry Pi Pico Using MicroPython Complete GuideInfrared (IR) sensors are among the simplest and most widely used electronic components for object detection, motion sensing, and line-following applications. When combined with the power of the Raspberry Pi Pico, the possibilities become endless—from smart automation systems to DIY...

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19SepSeptember 19, 2025

Getting Started with the ESP32-C3 Super Mini

Getting Started with the ESP32-C3 Super MiniThe ESP32-C3 Super Mini is one of the most compact yet powerful development boards in the ESP32 family. Designed with affordability, low-power consumption, and Wi-Fi + Bluetooth Low Energy (BLE) support, this tiny board is an excellent choice for IoT projects, DIY electronics, and embedded systems.In this guide, we’ll walk you through what the ESP32-C3 Super Mini is, its features, how to set it up, and a simple “Hello World” project to get you...

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