Johnny 5 - One Final Thing

[jroboto]

Sorry to have opened another discussion , but regarding the Sabertooth R/C version - servo pulse, I contacted Hitec and they told me

Getting out a pulse about 1,5 mS is indeed possible to connect the
device to a servo out of the control board , set the servo to a position
about " 100 " but it is possible that you will not get a perfect 1,5 mS
pulse but something ± a little offset. So it depends on the
resolution of the device if this is a problem or not.

What do they mean by resolution? Do you think that it is still possible to connect the RC version even if there might be a little offset.

p.s. excuse my ignorance but i’m still learning.

Thanks again

[robotdude]

@JRoboto

Sorry to have opened another discussion , but regarding the Sabertooth R/C version - servo pulse, I contacted Hitec and they told me

Getting out a pulse about 1,5 mS is indeed possible to connect the
device to a servo out of the control board , set the servo to a position
about " 100 " but it is possible that you will not get a perfect 1,5 mS
pulse but something ± a little offset. So it depends on the
resolution of the device if this is a problem or not.

What do they mean by resolution? Do you think that it is still possible to connect the RC version even if there might be a little offset.

p.s. excuse my ignorance but i’m still learning.

Thanks again

Not sure how much help I can be as I don’t have the original question nor Hitecs reply. Are they talking about the MRC3024 and RoboBasic? or with that controller and C programming? or something else. I know people have complained about the RoboBasic not being able to use variables in the servo commands, or something to that effect. I don’t know if it was resolved.

[jroboto]

Sorry to have posted only part of the answer but it is all about the controller.

Are they talking about the MRC3024 and RoboBasic?

Yes About the MR C3024 and Robobasic.

I know people have complained about the RoboBasic not being able to use variables in the servo commands, or something to that effect. I don’t know if it was resolved.

Yes you’re right you cannot use variables but only in the group MOVE command. You can use variables in the SERVO command though.

I wanted to know what I can do if the controller through Robobasic does not provide the exact 1.5mS, and what the term “resolution” means in this context.

Thanks again, you’re being very helpful.

Charles

[robotdude]

@JRoboto

Sorry to have posted only part of the answer but it is all about the controller.

Are they talking about the MRC3024 and RoboBasic?

Yes About the MR C3024 and Robobasic.

I know people have complained about the RoboBasic not being able to use variables in the servo commands, or something to that effect. I don’t know if it was resolved.

Yes you’re right you cannot use variables but only in the group MOVE command. You can use variables in the SERVO command though.

I wanted to know what I can do if the controller through Robobasic does not provide the exact 1.5mS, and what the term “resolution” means in this context.

Thanks again, you’re being very helpful.

Charles

Ok I understand. I’m quite surprised the RoboBasic program isn’t capable of sending reliable pulses. Resolution is how many points in the range the servo can be moved to. Our SSC-32 servo controller can create pulses from 500uS to 2500uS and the resolution is 1uS. This means the servo controller can resolve 2000 points in the roughly 180° of range in the servos. There is much more involved and this link can help.

lynxmotion.net/viewtopic.php?t=3181

Unfortunately I am not a guru with the RoboBasic and the MR-C3024 controller.

[jroboto]

If I use the no r/c version of the sabertoot I think I will eliminate all the problems. Will the BEC problem arises if I use the non R/C version and use the TX line of the MR C3024 controller (which transmits at 9600 8N1)?

Thanks

Charles

[robotdude]

Sure that should not be a problem with serial coms. Good luck with it!

[dimrobot]

If you’re running into problems, it may be useful to turn autocalibrate off.