The Mug Marker is a Don McRae's cardboard mug-decorating robot that uses an Eggbot-style EBB controller board and stepper motors to draw precise patterns on your favorite coffee-mug. Lenore from Evil Mad Scientists has a writeup on the design process and the way it performs.
Much like the Mug Plotter on Instructables, it uses the same EBB controller board and stepper motors as the Eggbot, but with linear motion for the pen instead of rotation. However, unlike that version, Don has incorporated the same winch-drive mechanism that we use on the WaterColorBot to provide motion for the linear axis– meaning that it can go fast or slow, with very good accuracy.
Don laser cut the large white winch on the back of the machine from acrylic. It controls a string that pulls the pen carriage back and forth as it rides on a pair of rods.
The pen holder itself slides into some additional bearings, and has a small protrusion on the back that rests on the servo horn, allowing it to be lifted up or lowered down. Like the Eggbot’s pen-lift mechanism, this mechanism only (actively) lifts the pen, which means that it can ride over uneven surfaces, or plot on mugs with variable diameter.
The Mug Marker
Matthew Borgatti, purveyor of such Boing Boing favorites as the Guy Fawkes Bandanna, the War Boy Bandanna, and the Lockpick Earrings, offers you your choice of his wares at at 20% discount, with the coupon code “jackhammerjill.”
Boing Boing readers already know about MakieLab, the startup where my friends and I make 3D printed, customizable dolls called Makies.
Sgt Crispy writes, “XKCD creator Randall Munroe, has made a spiffy little hoverboard game. Looks to be small, however, when you realize that boundaries are made to be broken, A massive world opens up to be explored.”
Celebrate Cyber Monday with some brain food. Save on any eLearning deal in the Boing Boing Store today using coupon code: CYBERMONDAY25. Below are a couple of our favorite eLearning offers: eduCBA Tech Training Bundle: Lifetime Subscription:Welcome to your personal online classroom, where you can finally study at your own pace, on your own time (and […]
This minimalist multi-tool will see to it that instead of rocking a tool belt, you’ll carry just one. It’s shaped slightly like a key and weighs less than an ounce, so it plays nice with your keychain. The strong surgical-grade stainless steel blade will last, and is handy for everyday tasks like opening boxes and […]
The Code Black is our top-selling drone of all time—and for good reason. This powerful, palm-size drone is not only insanely fun to fly, but can capture some serious video footage from up above. With a flight time of about 10 minutes and an ultra-smooth ride, it’s a great introductory drone for anyone looking to […]