Asked
— Edited
Resolved by fxrtst!
Anyone building a robot dog? I am looking for Servo's to build one that will work with ARC...
Related Hardware (view all EZB hardware)
EZ-B V4
by EZ-Robot
EZ-B v4/2 robot controller: dual Cortex ARM, Wi-Fi, audio/video, 24 servo/digital ports, I2C/UART, camera and Synthiam ARC control for custom robots
Wi-Fi / USB
Servos
24
Camera
Audio
UART
3
I2C
ADC
8
Digital
24
Related Robot Skill (view all robot skills)
Servo Speed
by Synthiam
Adjust servo/PWM speed (0-20) between two positions to quickly experiment and tune motion; select board/port; settings aren't saved.
The moteus r4.5 controller looks good and seems to be easy to setup...this clip above is just some nice explanatory stuff on FOC!!
Guys, can someone tell me the advantages of using this kind of motors over stepper motors?
These motors are faster and more powerful...
There is a patent app for the FOC stator motor with internal gearing that was used in the Robot from MIT, it hasn't been granted yet but looks pretty thorough so I think we will see a lot of these startup robot dogs using this actuator shut down although I am not sure China has a lot of respect for our patent laws. https://patents.google.com/patent/US20200230811A1
Looks like there is more stuff on the way... 2021 will be full of surprises I guess!!
Good find..there are FOC controllers coming out everywhere...! Everyone using ESP modules for wireless...these days.
FOC shield and code for Ardurino: https://docs.simplefoc.com/position_control_example
Bu this board is limited to 24v max
Been scouring the internet for over a month on this FOC subject with my eye on the prize...position control with PWM. I've joined quite a few discord servers to discuss with robot builders and folks designing their own controllers or expanding upon the SimpleFOC from above and what I've found there is a hard line division between pro hobbiests -those who want to play around and experiment with standard RC controllers and FOC motors, and pro robot folks that control FOC motors via ROS or other means.
So to get FOC motors to work like a servo and with skills in ARC, it would be nice to have a controller that can control precision position not just velocity. I found a card called the NearZero. Its home brew but open source. They don't have any cards available at the moment..as they are moving onto ver 2. Only draw back with current board is a fairly low max current at 3 amps per channel (2 ch per board). I've shot off an email to see what the specs are on V2 (due in Feb).
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