Robot Overlord has been in heavy development since July of 2019. Now after 816 commits I believe it’s ready.
The contextual menus for objects in the scene has been completely overhauled to be consistent. The networking has added an SSH system. The kinematics now use Gradient Descent. And there’s so much more!
CDM will be doing Unity development for the Sixi Robot Arm.
The AS5147 magnetic absolute rotation sensor is perfect for measuring robot joint angles. The key here is absolute! A relative rotation sensor like an encoder is very cheap but when you need to always totally unquestionably need to know where your thing is at then you need absolute sensing. In this post I’m going to show you my test setup, wiring, and code so you can get started easy peasy.
(more…)Denavit–Hartenberg (DH) parameters are a convention used by robotics experts to mathmatically describe the size and range of a robot’s bones. Today we’re going to look at what they mean and how they’re used.
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So you built a Spot Micro (or you want to) and – because you’re very clever – you read the instructions first. You probably noticed there’s a section where you have to build a PCB from scratch. For a lot of people, that’s beyond their skill level …for now. In the meantime, nothing should hold you back from building a sweet walking robot dog, amiright? Cool.
Here’s a board we used in the past for a stewart platform, which are a type of robot you can read about elsewhere on this site. It’s a good start for driving a robot dog. ELEC-0132 stewart platform board was designed for 11 PWM signals out and 6 analog values in. I’m betting that one of them can be used as an extra out signal to drive all 12 motors in the Spot Micro’s legs.
The boards are made by OSHPark and you can get them here:
https://oshpark.com/shared_projects/uGE0oIwR
But maybe wait until I test this theory. If I do this post will be updated with a part 2 right here:
