{ "item_title" : "Build a Noise Level Monitor", "item_author" : [" Stem School "], "item_description" : "Turn everyday sound into powerful data with a simple, hands-on project you can build yourself. This practical guide walks you through creating your own noise level monitor from scratch-perfect for students, hobbyists, and anyone curious about sound measurement. With clear explanations and step-by-step instructions, you'll explore how sound sensors work, how to connect them to microcontrollers, and how to transform raw signals into meaningful readings. Along the way, you'll discover how to design a reliable system, understand decibel levels, and apply your project in real-life scenarios-from monitoring classroom noise to improving home or workplace environments. The book blends electronics, coding, and environmental awareness into one engaging experience, making learning both fun and useful.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/9/79/825/493/9798254932031_b.jpg", "price_data" : { "retail_price" : "14.99", "online_price" : "14.99", "our_price" : "14.99", "club_price" : "14.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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