EEZYbotDELTA

thingiverse

I've always been fascinated by robots since I was a kid, especially building and watching them move. Now, thanks to 3D printing, I have the power to bring my dreams to life; designing, printing, assembling, and animating them. So, after EEZYbotARM....EEZYbotDELTA, I wanted to push my robot-building skills further. Following the aims of my previous robot arm on Thingiverse, I designed a new robot that belongs to the family of "spider" Delta robots. In industrial applications, it's mainly used for assembly purposes (Pick and Place). Videos showcasing its capabilities can be found here: youtu.be/mR6eCmtux_g, youtu.be/oGUTnrtlgHw. On 24/01/16, I uploaded a new video demonstrating control of the bot via Bluetooth and smartphone at youtu.be/TCjfZnsRWU4. This time around, I've focused on creating an easy-to-assemble, compact design that fits within the small, cheap philosophy I've established in my previous project. To achieve this, I used larger servos (MG995) for the main arms, which increased the overall size slightly (400 x 450 x 450h mm of occupied volume including structure). However, to keep costs down and assembly simple, I employed a smaller servo (SG90) for the gripper. In addition, I've integrated a structural component for hanging up the main body. The mixed construction involves both printed parts and Ø16mm aluminum pipes sourced from a local hardware store, providing an easily accessible solution that can be adapted to individual needs. As before, I designed a ramp for a handling "demo loop" showcasing its capabilities in videos. To learn more about assembling this robot, refer to my instructable here: http://www.instructables.com/id/EEZYbotDELTA-3Dprinted-Robot/. Here's the parts list (all measurements are metric): Commercial Items BOM: * n° 3 MG995 servos * n° 1 SG90 servo * n° 3 604zz ball bearings * n° 12 Uniball Traxxas M4x17 crawler/scaler nuts (ordered from eBay) * n° 3 Ø16 x 1 l = 220 mm aluminum pipes * n° 3 Ø16 x 1 l = 330 mm aluminum pipes * n° 6 M4 x 200 mm threaded rods * n° 15 M3 nuts * n° 6 M3 x 14 TCEI screws (hex head recessed) * n° 6 M3 x 20 TCEI screws (hex head recessed) * n° 6 self-tapping screws 3x15 * n° 1 400 x 450 mm plywood sheet Electronics: In keeping with the philosophy of my previous project, I've focused on producing a reliable and hardware-sufficient base for users to explore their own methods of control. As before, various ways to control the bot exist, but no ready-made solutions are provided. If you're unfamiliar with electronic components and seek an easy solution to drive the robot manually using graphical interfaces or set servo values for speed and acceleration, I suggest considering the Pololu Mini Maestro card (available here: https://www.pololu.com/product/1352). The free downloadable software offers a range of features including setting commands and storing them in the controller.