Build a dual NRF24L01 ESP32 Bluetooth jammer from scratch. Full circuit diagram, pin connections, firmware flashing & video demo. Educational RF project for makers & engineers.
Read more »ESP32 Bluetooth Jammer with NRF24L01 – DIY Build Guide
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Category: Microcontrollers Tags:
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SU-03T Offline Voice Recognition Module Setup Guide
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Build an offline voice recognition system using the low-cost SU-03T module. Full wiring, SDK setup & firmware flash guide. The SU-03T is the cheapest alternative to the VC-02 offline voice module
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Smart Grid in IoT: Build with Arduino UNO R4 & PZEM-004T
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Build a smart grid IoT system using Arduino UNO R4 WiFi and PZEM-004T to monitor voltage, current, power, and energy with real-time cloud tracking.
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ESP32-CAM WhatsApp: Send Images Instantly via IoT
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Learn how to build an ESP32-CAM WhatsApp system that captures and sends images in seconds using CircuitDigest Cloud API. No GSM needed. Full code, circuit diagram & GitHub included.
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Real-Time Hand Gesture Control Robot Using OpenCV and Arduino
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Build a real-time hand gesture control robot using OpenCV, MediaPipe, Arduino Nano & nRF24L01. Complete project source code, circuit diagrams, and step-by-step guide.
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DIY ESP32 Speaking Alarm Clock with AI Voice & Wi-Fi
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Build a smart ESP32 speaking alarm clock using XIAO ESP32-S3, Wit.ai TTS & MAX98357A. Announces time & custom messages aloud. Step-by-step wiring, code & web UI guide.
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DIY Handheld Arduino Game Console Full Build Guide 10 Games
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Build a pocket-sized Arduino game console with 10 arcade games, Snake, Tetris, Pacman & more. Full wiring diagram, Arduino code & step-by-step assembly guide included.
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Optocoupler Tester Circuit: Build, Test & Troubleshoot
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Build a simple DIY optocoupler tester circuit with two LEDs and a 3.7V battery. Test 4-pin and 6-pin optocouplers instantly, no instruments needed. Full diagram included.
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Adding WiFi Camera to LiteWing ESP32 Drone – Guide
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Add a WiFi camera module to your LiteWing ESP32 drone for real-time aerial video streaming. Step-by-step wiring, mobile setup, and troubleshooting guide for hobbyists.
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DC Motor Speed Control Using GSM and Arduino - Full Guide
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Learn how to build a DC motor speed control using GSM and Arduino. Send SMS commands to control forward, reverse, and speed of a DC motor using SIM800L and L298N motor driver. Includes circuit diagram, code, and pinout.
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