{"type":"product","schema_version":"1.0","item_id":"100958622573","canonical_url":"https://tw.bid.yahoo.com/item/100958622573","title":"含稅附發票~Wind Sensor Rev. C美國原裝熱線熱能風速計、風力風速計、呼吸、空氣流動傳感器","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-04-27T22:47:09.977Z","current_price":99999,"original_price":null,"stock_status":"low_stock","available_quantity":2,"sold_quantity":0,"seller":{"id":"Y5838639501","name":"物聯汪汪","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/f8a3e562-572a-4ae0-a7a9-930469121b22.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/72d428f8-49bf-45b0-99d2-cf2ed7fd13de.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null}],"description":"本賣場商品一律含稅開發票，需要統編者請下單後備註公司名及統編即可!\n\n敬請認明正版美國 Modern Device 公司生產原裝進口，非大陸山寨工廠製品！\n\n原廠 SKU: MD0550 Categories: Featured, Sensors\n\n網上搜尋 MD0550 可找到原廠 技術支援網頁，下載文件及 Arduino Sketch 代碼、DXF 電路板設計圖\n\nThis is a low-cost anemometer (wind sensor) made for use with electronic projects. It was originally inspired by a student project that required a breath sensor. We used a piezo type vibra-tab for that project but the sensor was glitchy, picked up sound and vibration and was hard to calibrate. I didn’t get this designed in time for the original project but I think it will solve certain problems in sensing wind speeds and human breath. The Wind Sensor is a thermal anemometer based on a traditional technique for measuring wind speed. The technique is called the “hot-wire” technique, and involves heating an element to a constant temperature and then measuring the electrical power that is required to maintain the heated element at temperature as the wind changes. This measured electrical input is then directly proportional to the square of the wind speed. Hot wire anemometers are available in hand-held packages resembling multimeters, and tend to cost about $300 but this is the first small sensor suitable for electronic experiments.\n\nThis technique excels at low to medium wind speed, and is the preferred technique for sensing indoor air movement, where the spinning cup anemometers typically seen on weather stations are ineffective. As an experimenters tool, the sensor is exquisitely sensitive, with a small puff of air being sensed at a distance of 18-24″. Possible applications include human breath detection, room occupancy detection, hvac system monitoring, weather stations and many more. We have a new version of the sensor out — dubbed Rev C (yes we switched from numbers to letters). It has five pins with three signal pins plus power and ground. Below is a little chart of the pins functions. The sensor runs fine between five and ten volts but the Arduino calibration sketch (link below) ...","shipping_methods":[{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"郵局掛號","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","7-ELEVEN取貨付款"],"category_id":"23453","category_name":"其他零組件","breadcrumb":[{"id":"23336","name":"電腦、平板與周邊","url":"/tw/%E9%9B%BB%E8%85%A6%E3%80%81%E5%B9%B3%E6%9D%BF%E8%88%87%E5%91%A8%E9%82%8A-23336-category.html"},{"id":"2092072521","name":"電腦零組件","url":"/tw/%E9%9B%BB%E8%85%A6%E9%9B%B6%E7%B5%84%E4%BB%B6-2092072521-category.html"},{"id":"23453","name":"其他零組件","url":"/tw/%E5%85%B6%E4%BB%96%E9%9B%B6%E7%B5%84%E4%BB%B6-23453-category.html"}],"view_count":0,"watch_count":0}