Schlagwort: 3D-Printed Clock

  • This 3D-printed, three-sided clock tells time with three hands

    This 3D-printed, three-sided clock tells time with three hands

    Reading Time: 2 minutes

    Arduino Team — February 9th, 2022

    Back in April 2021, Instructables user saulemmetquinn had the idea to build a fully 3D-printed clock that was based on the Triangulum constellation, which as the name implies, is a triangle. But it wouldn’t only tell the time using the typical set of hands and numbers, but also the current phase of the moon to stick with the astronomical theme. 

    To begin, Saul made a detailed mechanical model in CAD, complete with every facet and gear necessary for it to run. In short, the clock contains a spinning stepper motor that completes one rotation every 15 seconds (a ratio of 1:15). When combined with a series of reduction gears, this rate slows all the way down to 1:43200 for a single hour. In addition to the second, minute, and hour hands, an extra set of gears were added with a collective ratio of 99:2924 that keep track of the current moon phase. 

    After carefully assembling the clock by hand after printing each part, the ubiquitous ULN2003 stepper motor driver and 5V 28BYJ-48 were added to an inner panel along with an Arduino Nano Every. This board was selected due to its small size and larger memory footprint, which made running the Holo Clock firmware simple.

    To read more about this project, you can visit Saul’s write-up here on Instructables.

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    Website: LINK

  • A DIY digital clock with a twist

    A DIY digital clock with a twist

    Reading Time: 2 minutes

    Arduino Team — December 27th, 2021

    The digital clock has existed in its current form for decades at this point, so it’s quite exciting to see when a new take on the classic design comes along. The Time Twister 5, created by Hans Andersson, is a fully 3D-printed electromechanical clock that twists certain blocks into place, which make up digits to display the current time.

    Each block consists of five distinct layers, where each layer is a triangular prism with three outer faces. These faces come in a total of five different patterns and are arranged in such a way that any digit from zero up to nine can be represented by simply turning the correct layer(s) a certain amount. The internal electronics — including the Arduino Mega, DS3231 real-time clock module, sensor shield, and power circuitry — are all housed in the gold-colored base. Each layer is stacked upon three metal rods for support and contains a single micro servo that twists planetary gears to move the outside while keeping the inside stationary.

    While watching Andersson’ demonstration video below, it is tough to not become entranced by the synchronous movements the digits all rotating into place within the timespan of a second. To read more about his project or to download the files to build one yourself, you can visit his website here.

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    Website: LINK

  • Holo Clock is a novel 3D-printed clock that tells time using a pair of rings

    Holo Clock is a novel 3D-printed clock that tells time using a pair of rings

    Reading Time: 2 minutes

    Arduino Team — August 10th, 2021

    Simply looking at a traditional analog clock sitting on a wall somewhere got pretty boring for one Instructables user who goes by saulemmetquinn, which is partially why they wanted to create a novel design instead. Their device uses almost entirely 3D-printed components that come together to form the “Holo Clock,” since it seems holographic with its floating minute and hour hands.

    The Holo Clock project started with a surprisingly complex design in CAD software. There are two rings that are lined with teeth that sit stacked horizontally. The back ring is the minute hand, and because it is moved almost directly by the stepper motor, it spins more quickly. The hour hand is driven by a set of gears that reduce the output of the minute hand’s cogs by a factor of 60, thus making it turn at the correct rate. 

    The electronics for the clock are extremely simple. It uses an Arduino Uno with a set of four output wires, along with power and ground, to control a ULN2003 stepper motor driver. This in turn outputs current to a generic 5V stepper motor that spins the first drive gear at a known, precise rate for consistent timing. Likewise, the code is also straightforward, as all it must do is step the motor a certain amount depending on how many steps are left within the loop. 

    You can read more about the project in saulemmetquinn’s tutorial, which was recently recognized as a runner-up in the Instructables Arduino Contest.

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    Website: LINK

  • Ingenious marble clock runs on Arduino

    Ingenious marble clock runs on Arduino

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    Ingenious marble clock runs on Arduino

    Arduino Team — August 1st, 2018

    Arduino boards and custom clock builds seem to be a great match, as illustrated by Görkem Bozkurt’s recent project. 

    His 3D-printed marble clock uses a stepper-driven gear mechanism to lift 11mm steel spheres to the device’s top chute. The spheres then roll down to a five-minute rail, which empties when filled and transfers a single marble to another minute rail, graduated in five-minute increments up to 60. This then fills the hour rail in a similar process, letting you tell the time of day, or simply be mesmerized by its movement.

    The main gear mechanism is powered by a small stepper motor, controlled by an Arduino Uno for timekeeping.

    If you’d like to build your own, code is available on Bozkurt’s write-up, as well as the needed print files.

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    Website: LINK