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How To Electronics

Editor's Pick

Over Heat Detector using Op-Amp
Electronics Circuits

Over Heat Detector with Auto Cut-Off System using Op-Amp

Mamtaz AlamAugust 21, 2022
TDS Sensor Arduino
Arduino Projects

TDS Sensor & Arduino Interfacing for Water Quality Monitoring

Mamtaz AlamAugust 21, 2022
IoT Controlled Relay using Raspberry Pi Pico W WiFi
Raspberry Pi Pico W Projects

IoT Controlled Relay using Raspberry Pi Pico W WiFi

Mamtaz AlamMay 28, 2023

Latest Posts

ESP32 Fingerprint Attendance System with Live Web Dashboard

ESP32 Fingerprint Attendance System with Live Web Dashboard

Mamtaz AlamUpdated:June 16, 202610 Mins Read
IoT Based PM & Air Quality Monitoring System using ESP32

IoT Based PM & Air Quality Monitoring System using ESP32

Mamtaz AlamUpdated:June 14, 202611 Mins Read
DIY ESP32 MLX90640 IR Thermal Camera with Live Web Display

DIY ESP32 MLX90640 IR Thermal Camera with Live Web Display

May 10, 2026
IoT Activity Tracker with ESP32 & Accelerometer Gyroscope

IoT Activity Tracker with ESP32 & Accelerometer/Gyroscope

May 2, 2026
A Guide to Sourcing Obsolete ICs for Vintage Projects

Beyond AliExpress: A Guide to Sourcing Obsolete ICs for Vintage Projects

April 21, 2026

ESP32 IoT Vehicle Motion Analyzer with MPU6050 & LIS3MDL

April 27, 2026
Building a Smart Sensor Node with a BLE Microcontroller

Building a Smart Sensor Node with a BLE Microcontroller

February 26, 2026
High-Accuracy Pitch, Roll, Yaw with ESP32 & BNO08x IMU

High-Accuracy Pitch, Roll, Yaw with ESP32 & BNO08x IMU

April 27, 2026

Arduino Projects & Tutorials

SIM900 HTTP POST JSON

SIM900/800 HTTP Post Request in JSON Format with Arduino

Mamtaz AlamUpdated:August 21, 202245 Mins Read10K

In this post we will learn how to use SIM800 or SIM900 with Arduino &…

Automatic Plant Watering System with Arduino & Soil Moisture Sensor

Automatic Plant Watering System with Arduino & Soil Moisture Sensor

August 18, 2023
Grove Beginner Kit Arduino

Grove Beginner Kit for Arduino with 10 Sensors Projects

August 21, 2022
Bluetooth Controlled Robot Arduino

Wireless Bluetooth Controlled Robot using Arduino

August 3, 2023
Gas Leakage Detector GSM Arduino

Gas Leakage Detector using GSM & Arduino with SMS Alert

February 2, 2025

IoT Projects & Tutorials

Control LED on Inernet using Arduino & ENC28J60 IoT Projects

Control LED on Inernet using Arduino & ENC28J60 Ethernet Module

Mamtaz AlamUpdated:August 22, 202253 Mins Read3K
IoT Based Visitor Counter IoT Projects

IoT Bidirectional Visitor Counter using ESPP8266 & MQTT

Mamtaz AlamUpdated:May 29, 202368 Mins Read5K
AWS IoT Core ESP32 Lamp LED Relay ESP32 Projects

Control Relay/LED/Lamp with AWS IoT Core using ESP32

Mamtaz AlamUpdated:May 28, 202318 Mins Read7K
esp8266 max6675 thermocouple IoT Projects

IoT Industrial Temperature Monitor with MAX6675 & ESP8266

Mamtaz AlamUpdated:May 29, 202314 Mins Read3K

Learn Electronics

DC-to-AC Converters (Inverters)

DC-to-AC Converters (Inverters): Design, Working & Applications

May 20, 2023
Half Wave Rectifier

Half Wave Rectifier Basics, Circuit, Working & Applications

August 4, 2023
L293D Motor Driver IC

L293D Dual H-Bridge Motor Driver IC Pins, Circuit, Working

May 20, 2023
Types of Diode : Overview, Symbol, Working & Applications

Types of Diode : Overview, Symbol, Working & Applications

May 20, 2023

Product Reviews

Build a DIY Customized Mini PC using Raspberry Pi 4 Raspberry Pi Projects

Build a DIY Customized Mini PC using Raspberry Pi 4

Mamtaz AlamUpdated:January 8, 2024111 Mins Read4K

Overview In this project we will build a DIY Customized Mini PC using Raspberry Pi…

MyArm 300 PI 2023 - Portable 7-Axis Robotic Arm Review

MyArm 300 Pi Unboxing & Usage – Portable 7-Axis Robotic Arm

February 2, 2025
Mars Rover Robot Replica using ESP32 CAM & Arduino

Mars Rover Robot Replica using ESP32 CAM & Arduino

February 2, 2025
PlayStation 5 vs Xbox Series X Compared

PlayStation 5 vs Xbox Series X Compared

October 14, 2023
Shenzhen Huaqiu Electronics

Shenzhen Huaqiu Electronics Approach for upgrading Electronics Industry

April 14, 2024
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Don't Miss

3.7V to 9V Boost Converter

DIY 3.7V to 9V Boost Converter Circuit using MC34063

DIY Thermal Imaging Camera using AMG8833 Raspberry Pi

DIY Thermal Camera with Raspberry Pi & AMG8833 Thermal Image Sensor

Digital Thermometer with Arduino & LM35 Temperature Sensor

DC Energy Meter using Arduino

Build a DC Energy Meter using Arduino – 32V/5A

1080p MP4 Video Recorder with AMB82-Mini IoT AI Camera

1080p MP4 Video Recorder with AMB82-Mini IoT AI Camera

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Raspberry Pi Projects

Raspberry Pi 4 Model B
Raspberry Pi Projects

Raspberry Pi 4 Model B comparison & what’s inside the box

Mamtaz AlamAugust 28, 2023
Line Follower Tracking Robot using Raspberry Pi 4
Raspberry Pi Projects

Line Follower/Tracking Robot using Raspberry Pi 4

Mamtaz AlamOctober 30, 2022

Raspberry Pi Pico Projects

ADXL335 Raspberry Pi Pico Raspberry Pi Pico Projects

Interfacing ADXL335 Accelerometer with Raspberry Pi Pico

Raspberry Pi Pico Projects

Billboard Scrolling with LCD Display & Raspberry Pi Pico

OLED Display Raspberry Pi Pico Raspberry Pi

Interfacing SSD1306 OLED Display with Raspberry Pi Pico

Raspberry Pi Pico W Projects

Raspberry Pi Pico W OpenWeatherMap Raspberry Pi Pico W Projects

Raspberry Pi Pico W IoT Weather Station – OpenWeatherMap

IoT Controlled Relay using Raspberry Pi Pico W WiFi Raspberry Pi Pico W Projects

IoT Controlled Relay using Raspberry Pi Pico W WiFi

IoT LED Control using Blynk 2.0 & Raspberry Pi Pico W Raspberry Pi Pico W Projects

IoT LED Control using Blynk 2.0 & Raspberry Pi Pico W

Power Electronics

Boost Converter 3.7V to 5V Electronics Circuits

DIY 3.7V to 5V Boost Converter for Lithium-Ion Battery

Mamtaz AlamUpdated:October 2, 20223 Mins Read11K
Power Supply for ESP32 Board

Power Supply for ESP32 with Battery Charger & Boost Converter

September 12, 2023
DC-DC Converter using 555 Timer IC

Simple DC-DC Converter using 555 Timer IC (7.5-35V)

October 2, 2022
Power Supply for NodeMCU

Power Supply for NodeMCU with Battery Charger & Boost Converter

October 2, 2022

555 Timer Projects

Flashing Police Light LED Effect using 555 Timer 555 Timer Projects

Flashing Police Light LED Effect using 555 Timer

Mamtaz AlamUpdated:June 25, 20233 Mins Read3K

Overview In this project, we will build a Flashing Police Light using 555 Timer &…

Laser Security System using 555 Timer IC & LDR

Laser Security System using 555 Timer IC & LDR

May 13, 2023
Project for Girlfriend - Heart Shaped Serial LED Flasher Circuit using 555 Timer

Heart Shaped LED Flasher Circuit using 555 Timer

June 25, 2023
Servo Motor Controller & Tester Circuit using 555 Timer IC

Servo Motor Controller & Tester Circuit using 555 Timer IC

October 8, 2023
Gas Leak Detection & Alarm using 555 Timer IC

Gas Leak Detection & Alarm using 555 Timer IC

February 2, 2025

LoRa/LoRaWAN Projects

ESP32 Lora SX1278 ESP32 Projects

ESP32 & LoRa SX1278/76 Transmitter Receiver with OLED

Mamtaz AlamUpdated:May 26, 202336 Mins Read37K

In this tutorial, we will make Lora Transmitter & Receiver using Lora Module SX1278 & ESP32 Wifi Module. The communication type is a point to…

LoRa SX1278 ESP8266 ESP8266 Projects

ESP8266 & LoRa SX1278 Transmitter Receiver with DHT11

Mamtaz AlamUpdated:May 26, 2023205 Mins Read30K

In this tutorial, we will make Lora Transmitter & Receiver using Lora Module SX1278 & NodeMCU ESP8266 Wifi Module. The communication type is a point…

IoT LoRa Based Smart Agriculture LoRa/LoRaWAN Projects

IoT LoRa Based Smart Agriculture & Remote Monitoring System

Mamtaz AlamUpdated:March 8, 2023177 Mins Read3K

Overview: IoT LoRa Based Smart Agriculture In this project, we are going to learn about IoT LoRa Based Smart Agriculture & Remote Monitoring System. Smart…

Latest Posts

DIY Colorimeter using AS7265x Spectroscopy Sensor & ESP32 ESP32 Projects

DIY Colorimeter using AS7265x Spectroscopy Sensor & ESP32

Mamtaz AlamUpdated:February 1, 202610 Mins Read1K
Flight Black-Box Motion Recorder using ESP32 & BMI160

Flight Black-Box Motion Recorder System using ESP32 & BMI160

December 7, 2025
Humidity & Temperature Monitoring using DHT11 & NodeMCU on ThingSpeak

ESP8266 & DHT11 Humidity Temperature Monitor on ThingSpeak

October 19, 2025
IoT based Battery SoC (%) Monitoring System with ESP32

IoT based Battery SoC (%) Monitoring System with ESP32

September 28, 2025

Speed-Run Translations: Making Fast-Moving Meme Videos Accessible Worldwide

September 22, 2025
DIY ESP32 Board for Battery Powered IoT Applications

DIY ESP32 Board for Battery Powered IoT Applications

September 28, 2025
Build IoT DC Energy Meter with ESP32 Web Dashboard

Build IoT DC Energy Meter with ESP32 Web Dashboard

September 5, 2025
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