aredhel_vlsi
Member level 4
Hello, I have a question regarding the communication protocol and physical layer of how to connect the motors of a robotic arm.
I have 4 servomotors, Brushless. I need to select a motor drive for each one. The motors are: M1 shoulder- M2 elbow- M3 wrist- M4 thumb
in a daisy chain. I've seen that for similar configurations, people either choose RS485, or Ethernet or Ethercat or CanOpen, or even RS232.
How can I decide about this? Could someone summarize the drawbacks and advantages for these above?
I don't have very high requirements for the speed of the motors, I will use them for simple and slow rotations, 30W each. Of course I would prefer the simplest option with minimum number of wires and I would try to avoid to much heating. I really need robust cables because the arm is moving.
Also considering that I will also embed a camera, is it better to consider Ethernet?
I am asking the above, because I see that sometimes people support RS485 over Ethernet, but I also see solutions for Ethernet and even RS232 in some cases.
Thank you so much in advance ! If you need more details, I will comment back, but this is a rough idea I have right now.
I have 4 servomotors, Brushless. I need to select a motor drive for each one. The motors are: M1 shoulder- M2 elbow- M3 wrist- M4 thumb
in a daisy chain. I've seen that for similar configurations, people either choose RS485, or Ethernet or Ethercat or CanOpen, or even RS232.
How can I decide about this? Could someone summarize the drawbacks and advantages for these above?
I don't have very high requirements for the speed of the motors, I will use them for simple and slow rotations, 30W each. Of course I would prefer the simplest option with minimum number of wires and I would try to avoid to much heating. I really need robust cables because the arm is moving.
Also considering that I will also embed a camera, is it better to consider Ethernet?
I am asking the above, because I see that sometimes people support RS485 over Ethernet, but I also see solutions for Ethernet and even RS232 in some cases.
Thank you so much in advance ! If you need more details, I will comment back, but this is a rough idea I have right now.