{"product_id":"lego-3804-1-robotics-invention-system-v2-0-preowned","title":"LEGO® Mindstorms 3804-1 - Robotics Invention System V2.0","description":"\u003cp\u003e\u003cspan\u003eLEGO 3804 Robotics Invention System V2.0 is a Mindstorms (Mindstorms 2.0) set released in 2001, containing 717 pieces. It centers on the RCX programmable brick and a selection of TECHNIC elements to build multiple robots, with instructions for three starter models and a series of programming challenges. The set includes an infrared communication tower and PC software for graphical programming and downloading code to the RCX, along with electronic components such as motors and sensors. This second-generation release updated the original Robotics Invention System with revised hardware and software.\u003c\/span\u003e\u003c\/p\u003e","brand":"Lego Trade In","offers":[{"title":"Preowned with Box","offer_id":48055113678979,"sku":"3804-1PWB","price":119.99,"currency_code":"USD","in_stock":false},{"title":"Preowned with Box Built","offer_id":48055113711747,"sku":"3804-1PWB-B","price":114.99,"currency_code":"USD","in_stock":false},{"title":"Preowned No Box","offer_id":48055113744515,"sku":"3804-1PNB","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Preowned No Box Built","offer_id":48055113777283,"sku":"3804-1PNB-B","price":102.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0570\/6314\/5603\/files\/3804-1_large-1.jpg?v=1788289595","url":"https:\/\/bamgoodbricks.com\/products\/lego-3804-1-robotics-invention-system-v2-0-preowned","provider":"BAM Good Bricks ","version":"1.0","type":"link"}