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Semiconductor Packaging & SoC Design

The word "semiconductor" is a strong buzzword. They drive the stock market, enable all of our electronics and systems, and essentially hold up the world.

Tim Knoob

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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.

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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.

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The Ultimate Smartphone VFO ESP32 & Si5351 Wireless Control

By Mirko Pavleski

A professional-looking VFO for your radio projects without spending a fortune on touchscreen, rotary encoder or complex hardware.

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Scrolling Text on LCD I2C Display Using Arduino

By Ron Cutts

Follow this easy guide to create scrolling text on an I2C LCD display with Arduino UNO and Visuino. Includes circuit, code, and video walkthrough.

Sam Rollins

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Melting Picture Frame for PyPortal IoT Images

By Adafruit Industries

PyPortal Art Display.

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Build a Wireless Sensor Network Using NRF24L01 & Arduino

By Ron Cutts

Learn how to set up two NRF24L01 senders and one receiver on Arduino boards, program them in Visuino, and wirelessly share temperature and humidity readings.