Does anyone have a Cytron Smartdrive Duo 30 and what are the diffrences?

Question

Does anyone have a Cytron Smartdrive Duo 30 and what are the diffrences with a sabertooth in settings?

https://www.cytron.io/p-30amp-7v-35v-smartdrive-dc-motor-driver-2-channels

Folowing the manual and comparing it... I came to these settings... Still have to test it... But maybe someone has some conformation?

Stop

SendSerial(D0,9600,0) SendSerial(D0,9600,128)

Forward

Motor 1, 63 is full speed forward.

SendSerial(D0,9600,63)

Motor 2, 191 is full speed forward.

SendSerial(D0,9600,191)

Differential Turn Right

Motor 1

SendSerial(D0,9600,63)

Motor 2

SendSerial(D0,9600,255)

Differential Turn Left

Motor 1

SendSerial(D0,9600,127)

Motor 2

SendSerial(D0,9600,191)

Reverse

Motor 1, 127 is full speed reverse.

SendSerial(D0,9600,127)

Motor 2, 255 full speed reverse.

SendSerial(D0,9600,255)

And what about the Speed Changed setting?

DJ Sures · Answer

The commands look right - but you'd have to test. If you want speed control, there's two ways to go about it 1) Create a skill control  2) Use a custom movement panel If you choose #2, there's a $speedleft and $speedright variable which you can use. You'd have to use a little math to determine the speed for each direction.

onedayflie2 · Answer

It has been a long time, but i am back on this project So i have made a custom movement panel. Everything works...  But it's just one speed...   i managed to found out if i set lower numbers in the script the speed will be lower...  But the 2 shuffles for speed won't work. Would be nice if the sabertooth script was editable or viewable so i can compare  I found Gwen's question... about "ramping" As i understood this was to build up te speed instead of only 1 speed that stops abrubtly (https://synthiam.com/Community/Questions/Movement-Scripting-Help-Please-2983) I loaded the latest script and changed some perimeters to be compatible with this controller. But it doesn't seem to work for me...

onedayflie2 · Answer

I think my problem is...  Where the sabertooth increases the speed from a stop. 0-10-9-8-7-6-4-3-2-1-0-1-2-3-4-5-6-7-8-9-10 The Smartdrive Duo increases otherwise 0-1-2-3-4-5-6-7-8-9-10-0-1-2-3-4-5-6-7-8-9-1-0 example smartdrive duo  vs Sabertooth

DJ Sures · Answer

Use your controller in RC mode and it'll solve all your troubles. Use the Continuous servo rotation movement panel instead of the sabertooth one. Read here: https://synthiam.com/Products/Controls/Servo/Continuous-Servo-Movement-Panel-16096

onedayflie2 · Answer

Thanks for the fast response I was reallly mindboggling about what to do.  Going to try that and let you know my results. But if i look at the manual that should do the trick THANKS!

DJ Sures · Answer

They did all the planning for you ahead of time it seems. It makes most sense to re-use the continuous rotation movement panel since it's created for this use-case...

onedayflie2 · Answer

It works! THANKS! I only need to adjust the speeds and sensitivity, but how that works i allready know Is driving with the RC option also possible in autonomous mode?  And what is the diffrence exactly between Simplified Serial and RC mode for robotics? I thought i really needed Simplified Serial... (because everyone goes for that with sabertooth in the R2D2 world)   I am trying to understand that part

DJ Sures · Answer

There’s no difference. The outcome is the same. You want a robot to move. So how it moves is irrelevant with our software.  long as it moves with a movement panel, all movements are supported. Read about movement panels here in the manual: https://synthiam.com/Products/Controls/Overview/Movement-Panels-17372

onedayflie2 · Answer

Ok, good enough for me Thanks for your guidence

onedayflie2

Does Anyone Have A Cytron Smartdrive Duo 30 And What Are The Diffrences?

Stop

Forward

Motor 1, 63 is full speed forward.

Motor 2, 191 is full speed forward.

Differential Turn Right

Motor 1

Motor 2

Differential Turn Left

Motor 1

Motor 2

Reverse

Motor 1, 127 is full speed reverse.

Motor 2, 255 full speed reverse.

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