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
Last night’s sold-out Walkaway tour event with Laurie Penny at Waterstones Tottenham Court Road was spectacular (and not just because they had some really good whisky behind the bar), and the action continues today with a conversation with Olivia Sudjic tonight at Pages of Hackney, where we’ll be discussing her novel Sympathy as well as […]
The following is an excerpt from my new book, The PrEP Diaries: A Safe(r) Sex Memoir, now available from Lethe Press. The book chronicles the before-and-after of using Truvada PrEP, a recent breakthrough in HIV prevention that has prompted a new sexual revolution–except that most individuals have no idea it exists. Through sex positivity, explicit openness, and fun, I hope to make many more people aware that PrEP is an option for them in not just preventing HIV but having a better, braver sex life.
For years, Anita Sarkeesian and her crew at Feminist Frequency (previously) have been striking terror into the hearts of reactionary assholes by saying calm, smart, funny, sensible and insightful things about how video games reveal our social attitudes.
The Ticwatch 2 Active Smartwatch is a simpler take on an active wearable that raised over $2m dollars on Kickstarter and is currently offered in the Boing Boing Store.Somewhere in between the single-day battery life and platform-specificity of the Apple Watch and Android Wear devices, there exists the Ticwatch. Instead of trying to shoehorn another […]
Loot Crate is a subscription service that delivers a box of curated pop culture goods to your doorstep. To sample their geeky wares, you can order a single mystery box exclusively from the Boing Boing Store.Each month Loot Crate sends you 6-7 unique items and apparel, including collectibles, books, and t-shirts. Pulling inspiration from all […]
Yes, yes there is. The ultraportable Twisty Glass Mini boasts all of the simplicity of its forebear, while fitting just a little bit better in your pocket.The Mini is perfect for casual smokers, and anyone who doesn’t have the patience or fine motor skill for rolling papers. This piece keeps the convenient design of its older […]