RepRapWiki TEDxEWB Talk: Adrian Bowyer at Imperial College, London, introduces RepRap RepRap is humanity's first general-purpose self-replicating manufacturing machine. RepRap takes the form of a free desktop 3D printer capable of printing plastic objects. Since many parts of RepRap are made from plastic and RepRap prints those parts, RepRap self-replicates by making a kit of itself - a kit that anyone can assemble given time and materials. It also means that - if you've got a RepRap - you can print lots of useful stuff, and you can print another RepRap for a friend... RepRap is about making self-replicating machines, and making them freely available for the benefit of everyone. Reprap.org is a community project, which means you are welcome to edit most pages on this site, or better yet, create new pages of your own. RepRap was the first of the low-cost 3D printers, and the RepRap Project started the open-source 3D printer revolution. RepRap was voted the most significant 3D-printed object in 2017.
Romotive | The Fun Personal Smartphone Robot that You Can Program Seven Segment Display Tutorial How many TV shows and movies have some mysterious device counting down to zero those displays are 7 segment displays.With the 7 segment displays you can display any number or some alphabets that your heart desires. At first controlling a 7 segment display seems quite complex but it quickly becomes clear. What follows is a quick guide to control a 7 segment display with a arduino board If you want to jump ahead to any other part here's your chance: Step 1 - What Is A Seven Segment Display? Step 2 - Parts & Tools Step 3 - Testing Step 4 - Built The Circuit Step 5 - Project 1- One Digit Count Down Timer Step 6 - Multiplexing Step 7 - Project 2 - Two Digit Count Down Timer This instructable is a entry in the arduino contest so if you like it please vote.