“In this Instructable, I will drive a 28-BYJ-48 step motor, with a UNL2003 darlington array board, sometimes named x113647, without a micro controller. It will have start/stop, forward/backward, and speed control. The motor is a uni-polar …

“Talk about cheap stepping motors and there’s a good chance someone will mention the “28BYJ-48”. Or maybe he or she will not remember the part number and say something along the lines of “That 3 dollar stepper used …

“Hello. In this article Ill explain how to build simple and ultra cheap automated turntable with shutter release. The price for all parts are little less than $30 (all prices are taken from Aliexpress). Most of the 3d artists, who …

“Marble Clock is a 3D printed rolling ball clock that tells the time by the location of marbles/balls. It consists of 3 main rails, where, The 5-minute rail with 1-minute intervals The 15-minute rail with 15-minute intervals The 12-hour …

“Shortly after the first mechanical clocks were invented in the 14th century, inventors started looking for ways to represent the motion of the heavens. Thus, the astronomy clock was created. Perhaps the best known astronomy clock was created in Prague …

“TLID stands for “time left in day”. The idea for this project came from a frustration with my sleep schedule in college. I would work late into the night and wake up at 10, 11, and even 2 the next …

“High accuracy wall plotting at minimal cost, enrich all the whiteboards around you with surprising artwork! Story Background I don’t quite remember when it started, but I think around 1999 or so. Me and a friend that was into …

“This instructable describes how to make an ultrasonic radar-style display using an Arduino microcontroller, an ultrasonic sensor, and a small stepping motor. An optional sensor modification allows multiple objects to be detected with each ping. Construction is simple … all you …

“The Earth Clock is a project I made in order to visualize the face of the earth exposed to the sun in real time! In the nature the sun-rays are almost parallels because the sun is far away, that is …

“Gears never fail to capture the interest of anyone observing them. The inspiration for this clock was a minimalist approach to a gear clock. By simply hanging an incremented gear onto a small driven gear and letting gravity and mathematics …