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PROJECT

Build a Handheld Arduino Retro Game Console

By Rinme Tom

Build a pocket-sized Arduino game console with 10 arcade games, Snake, Tetris, Pacman & more. Full wiring diagram, Arduino code & assembly guide included.

PROJECT

Build a Pocket Optocoupler Tester for Fast Diagnostics

By Rinme Tom

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.

PROJECT
60

ESP32 WhatsApp Alerts Without a SIM Card

By Rinme Tom

Learn how to build an ESP32 WhatsApp notification system using CircuitDigest Cloud API. Send real-time sensor alerts to your phone, no SIM card, no WhatsApp Business API needed. Step-by-step tutorial with code.

PROJECT
54

Build a USB Game Controller with Arduino Uno R4

By Rinme Tom

Learn how to build an Arduino game controller with our complete DIY guide. Includes circuit diagram, Arduino code, wiring instructions, and USB setup. Free GitHub code download.

PROJECT
819

Build a 6-DOF Arduino Robotic Arm from Scratch

By Rinme Tom

Build an Arduino robotic arm with servo motors, 3D printed parts, circuit diagram, and complete code. Step-by-step DIY tutorial for pick and place robotic arm operations.

PROJECT
229

ESP32 AI Text-to-Speech: Cloud-Powered Voice Output

By Rinme Tom

Complete ESP32 text to speech using AI guide. Learn ESP32 TTS library setup, circuit wiring, code examples for voice-enabled IoT projects with MAX98357A amplifier.