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PROJECT

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

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
550

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
197

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.

PROJECT
262

Efficient DIY Joule Thief Voltage Booster Guide

By Rinme Tom

Build a Joule Thief circuit to power LEDs from dead batteries. Complete circuit diagram with toroid, working principle, components list & step-by-step assembly guide.

PROJECT
82

ESP32-CAM AI Currency Classifier: Build Real-World Recognition

By Rinme Tom

Master ESP32 CAM currency recognition with our Arduino guide. Step-by-step: Edge Impulse training, circuit setup, code deployment for Indian note detection.