Hi,
Is there a way to have the base doing 360°?
I was thinking about using the should and elbow do reach the other side, but I’m now realizing I can’t. Is there a way to have the base cover 360° instead of 180°?
Thanks,
JMS
Hum. Thinking at loud here. I’m wondering if changing the 3rd motor for one doing 270° might allow the arm to reach the other side. 270 might not be enough…
You can replace the Base Motor with a Continuous Rotation Motor. You can mount a rotary slip ring between the base and the rotating platform.
For which product exactly?
We have many robot arms available 
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Good point! I have a Lynxmotion AL5D 4DOF.
@embeddedbarsha do you have a pointer to a rotary slip ring? Also, is a Continuous Rotation Motor working similar to the servo one?
Thanks.
Any pointer to any product which might help me achieving that? The goal is to be able to access 360° of the surface around the arm. So far I can do only 180° :-/
As you indicated, the only way to get 360 degree rotation would be a slip ring at the center of the rotation, and unfortunately we don’t carry any products like that. If you need 360 degrees but won’t do multi-turn, the following base is from Lynxmotion, and the LSS (smart) servos can be used in RC mode:
To get the servo into RC 360, you’d use the button menu:
For sufficient torque, you would need an ST1 servo as opposed to an HS1.
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Ha, nice! Thanks a lot! Indeed I don’t need to keep rotating/multi turn. I just want to be able to address 360° of the plan, but I don’t mind to have to rotate 359° on the other side when needed.
I will order this updated base and probably the LSS-HT1 (As I imagine the higher torque will also help for better precision).
One more question still. The LSS-HT1 seems to have a 4-wire conector while on the SSC-32U everything is 3 wires. Is there a way to connect this servo to my existing card? Or do I need a (LSS-HUB) too? (And if so, seems that it’s my other servos that I will not be able to connect.)
Thanks,
JMS
Each servo actually include a 4-pin to 3+1 pin connector cable, where the fourth pin is effectively unused, and the 3-pin would be an RC input,
HOWEVER
The three pin connector would be: GND, 12V, Signal.
The rest of the servos in the AL5 operate at 4.8V to 6V, far lower than what the power supply you have uses.
The simplest way you be to add a 12V wall adapter, and barrel to terminal breakout:
Example:
You would need to connect the + to the middle pin, the - to the black pin (GND) of the servo, and the pulse (signal) and GND from the servo’s connector to the SSC-32 board (but NOT power).
An alternative to that approach if you are using your own software is to use the second row of headers on the SSC-32, but remove the VL=VS and VS1=VS2 jumpers so that VS2’s input can be different from VS1’s 6V.
Either way, be very safe / cautious before applying power. We’re happy to help verify connections.
Indeed, the LSS Hub would work too (and you could mount it at the back or on the sides of the servo), but you would need to understand how to make all of the connections and how to use the jumpers (you’d still need a 12V wall adapter).
Cool!!! Yes, I have indeed built my own software. Ok. I have identified all those jumpers. So far I only have power supplied to VS1 +/-. I understand what they are doing and it should be fine.
So if I remove all of those, I can connect the wall adapter to the barrel jack to terminal, and the terminal to VS2 +/- and connect the new motor there directly? Or I’m better to not power VS2 on the SSC-32U board and instead use the LSS-HUB for the 12V and only connect ground+signal to the SSC-32U?
All of this definitely looks doable to me. I like it! Thanks a lot!
Really your call which approach to take. Using a separate power source for VS2 might be the easiest, ensuring jumpers are correct.
Exciting! Thanks a lot! I order the barrel, the motor, the base and the power adapter! Can’t wait to install them!
Thanks again for your help!
Excellent. Can’t stress it enough, but be extra careful because there are two power supplies / voltages. Happy to go over any connections before you apply power. Don’t want anything to blow / burn.
Thanks for the offer. I will do a picture of the installation and post it here for your review before apply any power. Hopefully before the end of the week.
Therefore the thick black and red wires going to VS1 would be from the 6V power supply, while the small green and red (encased in grey) going to VS2 would be from the 12V power supply, ensuring that the red wire is positive.
The VS1 = VS2 jumpers seem o be moved (held in place by one pin each) and the VS = VL jumper is not there.
Yes, looks good.
Exact. Red/Green is +12V/Ground And VS1 = VS2 are move to stay in place in one pin so I don’t loose them.
Thanks for the confirmation! I now need to replace the base with the new one. That might take a few day. I can’t wait to test it! I will more than double my number of buckets for sorting and will make the things WAY faster.
Thanks again for your support here!
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Might want to get the LSS functional in RC 360 mode before you make any hardware changes. You can do so via the button menu:
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Ha yes! My first test failed, so I realized I had to do that. I’m running on Linux, so all home-made software. Therefore I used the button and the instructions you gave before and got it correct on the first try!
Now I need to figure how to fix the arm on the new base. I also ordered some extension cables to run them all under the table and allow a full 360° without having anything on the way.
Next step will be to 3D print a new wrist to get it longer and wider to be able to have 2 suction cups instead of one…
Endless hobby 
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Honestly given all of the possible configurations on the smart servo, you might have fun playing with it on its own. You can set it to stop at a specific current (which relates to torque), vary the speed or rotation, get angular feedback and much, much more. They’re very versatile in serial mode.