Metal Binder Jetting
Automotive Polymers

Make Your Own 3D Printed “Doodle Clock” That Magnetically Writes the Time

Share this Article

clock1

On Hackaday three years ago, architect Ekaggrat Singh Kalsi–a designer who also 3D prints with light–shared a robotic writing clock, also referred to as the Doodle Clock, that he has now updated and posted for all interested parties. The biggest improvement is with how time is marked by the clock.

clock3There are several general improvements on this clock compared to the first one. The first version of the clock used a marker, which proved to be a problem since the marker would dry up after only 30 minutes of use. Then Ekaggrat got a good idea and substituted the marker for a magnetic doodling board inspired by the Fisher Price ones. In this case, he used 2 mm cylindrical magnets inside a solenoid (a coil wound up into a tightly packed helix) to write and then erase the time.

Another general improvement from the first prototype is that the second version has a much smoother and quieter sound since Ekaggrt used small gear steppers instead of servos this time around. All clock parts were designed and 3D printed. In addition to the 3D printed parts, the following components are also required to build this clock yourself: an artmega 644 p; two stepsticks; 1293dd; two 1:100 15mm stepper motors; two 12 x 18 mm solenoids; two 2mm diameter x 10mm magnets; and one ds1307.

This version of the clock has also gone through several prototype phases that Ekaggrat describes in his project log. For the first prototype, one motor was used on the base and one was mounted on the arm’s base driving the upper arm with a thin cable that kept slipping and the motors created backlash. On the second prototype, Ekaggrat replaced the cable with a connecting rod which eliminated the slipping cable problem, but there was still the problem of motor backlash.

clock4 clock5

Since prototype 2 is where Ekkagratt’s project log on his blog ends, we are left thinking that there’s another prototype to come, however, he doesn’t provide specific details about whether or not he ever tackled that motor backlash problem in the clock.

Other things we do know about the clock is that all parts are 3D printed, with the advice to 3D print with a .25 resolution, 50% infill and be ready up clean up holes before you assemble the clock. In addition to the Hackaday post, Ekaggrat has also posted files on Thingiverse, and quite a few people seem interested in trying this out for themselves. The clock has received 559 views and 64 downloads since it was posted last week.

Still a work in progress, the project has made great improvements and looks like its ready for you to try. As Ekaggart writes himself, the best part of it is “how mesmerizing it is to watch it” which is why he is striving to make it a perfected and practical desktop clock. You can see this for yourself in the video below, and discuss this design in the 3D Printed Doodle Clock forum thread on 3DPB.com.

Share this Article


Recent News

3D Printing News Unpeeled, Live with Joris Peels – Wednesday 10th of August

3D Printing News Briefs, August 10, 2022: Events, Awards, & More



Categories

3D Design

3D Printed Art

3D Printed Food

3D Printed Guns


You May Also Like

3D Printed Biocomposites Could Help Reduce Marine Plastic Pollution

Concerns about the impact of plastic litter and microplastics in the oceans are at the forefront of environmental study. For decades, the marine environment has suffered from the degradation of...

Featured

Markforged Buys Digital Metal: What Does it Mean for the 3D Printing Industry?

It’s been a few months since the additive manufacturing (AM) industry had a notable corporate acquisition, which seems like an eternity after all the competitive consolidation and shakeup we saw...

Black Buffalo Partners with Xerox to Finance Client’s Construction 3D Printing Purchases

Black Buffalo 3D, an emerging additive construction (AC) startup, announced a strategic partnership with FITTLE, Xerox’s equipment financing arm. Through the alliance, FITTLE will help make it easier for Black...

3D Printing News Briefs, July 21, 2022: Layoffs, Heat Exchangers, & More

In today’s 3D Printing News Briefs, starting with business, manufacturing company Fast Radius recently cut 20% of its workforce. Then, Xometry has introduced new digital sourcing tools and more. A...