Build an IoT-based smart energy meter using ESP32 & PZEM-004T. Real-time monitoring via the MQTT dashboard, SMS alerts for abnormal conditions. Complete circuit & code included.
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Category: Microcontrollers Tags:
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LED Chaser Circuit using 555 Timer IC: Step by Step Guide 2025
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Build an LED chaser circuit using a 555 timer IC and a CD4017. Complete guide with circuit diagram, pinout, assembly steps, and troubleshooting. Adjustable speed control included.
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Automatic Toll Gate System Using Arduino
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Build an automatic toll gate system project using Arduino with RFID, IR sensors & servo motor. Complete circuit diagram, code & step-by-step tutorial for beginners.
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Build Your Own ESP32 AI Voice Assistant with MCP Integration
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Build an intelligent ESP32 AI voice assistant using Xiaozhi framework. Includes PCB design, hardware assembly, 3D enclosure, and MCP integration for smart home control.
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Build GPS Tracker with XIAO ESP32-S3: Geofence & SMS Alerts
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Create a Wi-Fi GPS tracker using Seeed Studio XIAO ESP32-S3 & Neo-6M module. Features geofencing, SMS alerts, offline storage. No SIM card needed. Free GeoLinker tracking!
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STM32 Precision Digital Micro Current Meter - Complete Build
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Complete guide to building a precision digital micro ampere meter using STM32. Measures nA to mA with OLED display. Includes circuit, PCB files, firmware & 3D enclosure. DIY ampere meter DC digital.
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Interfacing SD Card Module with Raspberry Pi Pico Guide
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Learn to interface SD card module with Raspberry Pi Pico using SPI. Complete wiring guide, Arduino code, FAT32 setup, file operations & troubleshooting included.
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Dual Axis Solar Tracker System Using Arduino
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Build a dual axis solar tracker system using Arduino, LDR sensors & servo motors. Increase solar panel efficiency by 30-40%. Complete circuit diagram & code included.
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Build an ESP32 Text to Speech Offline System
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Build an ESP32 text to speech offline converter with Talkie TTS library. Step-by-step tutorial includes circuit connections, code examples, and troubleshooting.
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Build a Compact and Portable DIY Bluetooth Speaker Amplifier
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DIY Bluetooth Speaker using the JDY-62 module and PAM8403 amplifier for clear, wireless audio. This simple project covers components, pinouts, wiring, and circuit setup, making it perfect for beginners learning basic electronics while creating their own portable speaker.
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