LoRa: How to Send Data 5km with Arduino (No WiFi)
WiFi barely reaches your driveway. LoRa reaches the next town. Master the SX1278 module, Chirp Spread Spectrum physics, and build a 5km range sensor network.
Tutorials, projects, and insights from the world of electronics
WiFi barely reaches your driveway. LoRa reaches the next town. Master the SX1278 module, Chirp Spread Spectrum physics, and build a 5km range sensor network.
Stop polling your server every 5 seconds. Learn why Professional IoT uses MQTT. Master Pub/Sub architecture, QoS levels, Retained Messages, and Last Will & Testament.
Run your IoT sensors for a year on a single coin cell. Mastering ESP8266 Deep Sleep, RTC Memory persistence, and the hardware hacks needed to achieve 20uA power consumption.
Stop climbing ladders to plug in USB cables. Learn how to flash your ESP8266 wirelessly using OTA updates. Master partition tables, security credentials, and remote fleet management.
Your Arduino code is stuck in 1990. Learn how to use FreeRTOS to run multiple tasks simultaneously, ensuring your ESP8266 never freezes again. The ultimate guide to real-time operating systems.
AI usually requires a $1000 GPU. Not anymore. Learn how to train a TensorFlow Lite neural network and run it on a $3 ESP8266 microcontroller using TinyML. Edge computing demystified.
Stop using breadboards. Learn how to design professional Printed Circuit Boards (PCBs) using EasyEDA. A complete step-by-step guide from Schematic to Gerber files for your Smart Home Hub.
Combine temperature sensors, OLED displays, and high-voltage relays into a single, professional-grade Smart Home Hub powered by ESP8266.
Turn your ESP8266 into a money-printing machine (figuratively). Fetch real-time Bitcoin prices from HTTPS APIs, parse JSON, and display them on an OLED screen.
Stop building offline toys. Master the ESP8266 NodeMCU to connect your projects to Wi-Fi. Build a web server and control your home from your phone.
Forget Infrared. Build wireless sensors that work through walls using 433MHz RF modules. Master ASK modulation, antenna physics, and the RadioHead library.
Cut the cord. Decode signals from any TV remote using Arduino and the VS1838B sensor. Build a Universal Remote and control high-voltage appliances wirelessly.
Your Arduino is lonely. Teach it to talk to your computer using Serial (UART) and Python. Parse CSV data, plot real-time graphs, and build a PC dashboard.
Stop writing spaghetti code. Learn Finite State Machines (FSM), Non-Blocking I/O, and Arrays by building a professional 'Simon Says' game.
Learn how to read the MPU6050 Accelerometer and Gyroscope using the I2C protocol. Master registers, raw data, and build a digital spirit level.
Combine sensors and servos to build a real-time scanning radar. Learn Polar Coordinates, Serial Plotting, and data visualization.
Turn your Arduino into a robotics controller. Master the SG90 Servo Motor, understand closed-loop control systems, and build precise robotic joints.
Give your robot eyes. Learn how the HC-SR04 Ultrasonic Sensor works, master the physics of sound, and build a precision Parking Sensor using Arduino.
Stop squinting at the Serial Monitor! Learn to connect LCD 1602 (I2C) and OLED SSD1306 displays to Arduino. Master coordinates, custom characters, and build a standalone Digital Clock.
Stop using delay() for time! Learn to master the DS3231 Real Time Clock (RTC), I2C protocol, and CR2032 battery backups to keep precise time for years.
Master the Mechanical Relay. Learn how to control desk lamps, fans, and heavy appliances using an Arduino. Understanding NO, NC, and Galvanic Isolation.
Why plugging a motor directly into an Arduino is a disaster. Learn to use Transistors, Diodes, and PWM to control speed and direction safely.
Turn light into sound. We combine LDR physics with Piezo crystal magic to build a touchless musical instrument inspired by the sci-fi Theremin.
Arduino pins are digital, so how do they output 2.5V? Learn the secret of Pulse Width Modulation (PWM) to fade LEDs, control motor speed, and mix RGB colors.
Digital is black and white. The real world is gray. Learn how to use the Arduino ADC to read potentiometers, sensors, and voltages using analogRead().
Stop writing 50 lines of code when 5 will do. We rebuild the iconic Knight Rider scanner using C++ Arrays and For Loops. The ultimate guide to clean coding.
Red, Yellow, Green. We build a realistic Traffic Light Controller using Arduino. Learn how to use C++ Variables to write clean, professional code.
Stop building computers from scratch. Learn how to use the Arduino Uno to replace complex circuits with simple code. Your first step into C++ programming.
KITT is calling. Learn how to build the legendary 'Knight Rider' scanning light effect using the CD4017 Decade Counter and a 555 Timer.
1, 2, 4, 8... Learn the secret language of computers. We demystify Binary, explain the Ripple Counter, and build a 4-bit machine using the 74HC93 chip.
Computers need amnesia? No. Learn how to trap an electron using Logic Gates. Master the SR Latch, D Flip-Flop, and build your own 1-Bit Memory cell.
Master the building blocks of the digital world. Learn how AND, OR, NOT, and XOR gates work with clear diagrams, truth tables, and a practical 'Logic Lock' circuit project.
Give your circuits eyes and ears. Learn how to use Light Dependent Resistors (LDRs), Thermistors, and Microphones to control the physical world.
It's in your microwave, your toys, and maybe even your car. Learn how the 555 Timer works and build a blinking LED circuit from scratch.
From sand to supercomputers. Learn how the NPN transistor works, why it is the most important invention in history, and build a circuit controlled by your finger.
Stop guessing and start building. Learn how to decode the breadboard, master the multimeter, and build your very first working LED circuit without burning anything down.
Master the Big Three of electronics theory using the intuitive Water Analogy. Finally understand how Voltage, Current, and Resistance actually work together.
Confused by voltage? Scared of shocks? This absolute beginner's guide explains what electronics really is, how to stay safe, and why you should start today.