{ "item_title" : "Object Counting Device Based on IR Technology", "item_author" : [" Maksims Kotjuks "], "item_description" : "This book is a study of an automatic object counter, a device whose circuit diagram was sourced from the Internet. The object counter uses IR technology to count objects. This book details how the device is built, its implementation, error correction, various tests, and modernization. It also explains the operating principles of each component and provides descriptions of some microcircuits. The device is entirely constructed using logical elements and does not require programming, making it accessible for beginners in electronics. The book includes circuit diagrams of the device, photographs of the device and tests, and conclusions drawn during the project.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/9/79/889/248/9798892485630_b.jpg", "price_data" : { "retail_price" : "28.00", "online_price" : "28.00", "our_price" : "28.00", "club_price" : "28.00", "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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