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BoB v1 Photo: k120189 @ LetsMakeRobots

BoB v1
Photo: k120189 @ LetsMakeRobots

When Kevin Biagini first posted his little 3D printed biped robot, BoB the BiPed on Let’s Make Robots, he didn’t realize he’d be launching a fad. His cute little robot proved popular, and he encouraged other members of Let’s Make Robots to make copies and adaptations. He also posted his design on Instructables, spreading the word even further. Bob won a 2nd place prize in Instructable’s 3D Printing Contest and 1st prize in their Pocket Sized Electronics Contest.

BoB the Biped uses four servos to walk, two per foot. Kevin designed BoB to be easy to make and inexpensive. He wants to give kids a chance to try their hands at robotics and 3D printing.

Here are a selection of BoB’s “family”, each made by someone else.

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Kevin and BoB are coming to World Maker Faire in New York, so come out and see them for yourself. Can’t make it to Maker Faire? Follow the links to Let’s Make Robots or Instructables to build your own!

Andrew Terranova

Andrew Terranova is an electrical engineer, writer and an electronics and robotics hobbyist. He is an active member of the Let’s Make Robots community, and handles public relations for the site.
Andrew has created and curated robotics exhibits for the Children’s Museum of Somerset County, NJ and taught robotics classes for the Kaleidoscope Learning Center in Blairstown, NJ and for a public primary school. Andrew is always looking for ways to engage makers and educators.



  1. […] BoB il bipede è un piccolo robot 3D stampata carino e vincitore di Instructables stampa 3D e tascabile concorsi Elettronica. BoB ha ispirato una serie di copie e gli adattamenti. Venite a vedere Bob al World Maker Faire di New York. […]

  2. […] Note that this isn’t a ready-to-go kit; you have to supply (and figure out) your own microcontroller, servo controller, power supply, and so on.  But clearly it’s been inspirational enough to cause a number of BoB builds already, as you can see in the slideshow on this MAKE article. […]

  3. […] Let’s Make Robots: BoB — instructions on building a bipedal robot. (via Makezine) […]

  4. Have you built a BoB? Post a link to your version in the comments!
    Here’s an updated BoB from JAX.

  5. […] cute walking robot was developed by Kevin Biagini of Let’s Make Robots. Check out his Instructable on how to […]

  6. […] cute walking robot was developed by Kevin Biagini of Let’s Make Robots. Check out his Instructable on how to make […]

  7. […] Kevin Biagini shared the cute, super-simple “BoB the BiPed” on Let’s Make Robots! a year ago, and then launched an Instructables tutorial to help others to give it a try — and BoB mania has been sweeping through the robotics/maker worlds ever since. […]

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