Arduino with moteus for brushless motor control

Get moteus: mjbots.com
moteus intro video: • moteus developer kit g...
Read more: jpieper.com/2024/02/09/moteus...
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#bldc #arduino #mjbots

[@Ender_Wiggin]

Lets goo! Love you stuff.

[@JohnLauerGplus]

I'd love to see a similar demo for ESP32!

[@awesjosh]

Maybe someday!

[@rudisoft]

Lots of greetings from Germany, Josh!

[@awesjosh]

Greetings back at you!

[@PhG1961]

Awesome and impressive!

[@maurizionaletto583]

I love your awesome work

[@wgm-en2gx]

Awesome, I have an moteus controller and haven't done much with it because the API was daunting. This seems to greatly lower the barrier.
Although for me, I'd love to see a .NET core nuget package equivalent.

[@mattanimation]

nice!

[@GavinRemme]

I want to build a steer by wire steering rack for a go kart and am considering this. Can it monitor and send output torque back to the Arduino?

[@awesjosh]

Yep, you can.

[@user-fm5bb6bm5w]

Hello, I'm a university student in Korea, majoring in robotics. I became interested after seeing the development process of your robotic dog. I'd like to create a brushless servo similar to the QDD100 using the MJ5208 brushless motor and Moteus R4.11 controller. However, I want to make it slightly smaller, which seems to require changes to the planetary gear section and the outer casing. Could you advise how to obtain related machined parts? Is it possible to purchase these components?

[@awesjosh]

Unfortunately, nothing can be purchased off the shelf. You can look at historical posts at jpieper.com to get an idea of some of the steps, but it I have to warn you that it will be a challenging endeavor.

[@TalbotNC]

Moteus, see you soon on a teensy 4.0 ;)
I need to send 2 more Christmas card this year. One for you, one for @PaulStoffregen.

[@SystemsPlanet]

Are you joking?
To use your product I have to glue a magnet to a motor rotor?

[@awesjosh]

To use the onboard magnetic encoder, yes, you need to attach a diametrically magnetized sense magnet to the rotor and mount the board so that the sensor is centered on it with approximately a 2mm air gap.
moteus does support other encoder types, but they are more complicated to use than the integrated one.

[@awesjosh]

For what it is worth, using an on-axis diametrically magnetized magnet is a relatively common technique for commutation of brushless motors when they need to operate smoothly with full torque at zero speed and also be controlled in velocity or position mode, like in servo applications. Hall effects are also sometimes used, but cannot by themselves also be used for accurate position or velocity control.
In finished systems, the rotor usually has a dedicated machined space for the magnet, or with things closer to prototypes, you can mount it with adhesive into a 3d printed bracket that attaches to the rotor.