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These are the build instructions for OpenROV v2.8.

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Add additional function via servo

Hello

I'm planning on adding a manipulator. It'll be operated by servo. Is there an external plug I can plug the servo to?

Regards

Chris

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3 Answers

Hello Chris,

If you have an OpenROV v2.8 it is pre-wired to accept an external servo. You can see the diagram in the electrical schematics (page 2).

https://github.com/OpenROV/openrov-elect...

It is servo4.

If you have additional questions about this I would like to direct you to the forum.

-Brian G.

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Thank you for your quick reply. Is it accessible from outside of the ROV? (prewired to external) Or will I need to do the wiring?

Regards,

Chris

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If you have an OpenROV v2.8 it is prewired to the outside already. The wires are on pins 23,24,25 on the DB-25. See the wiring diagram for the colors.

https://drive.google.com/file/d/0B3CACRX...

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I am looking for the servo and the gripper for my ROV 2.8 is there a particular servo and where I can get it it seems that you don not have theses two items in your lines of products can you guide me,

I appreciate your assistance.

Best

Nagy

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We do not sell a manipulator at this time. There are people who have made their own. The forum has these discussions and build notes by community members.

Example: https://forum.openrov.com/t/openrov-grip...

Hope this helps.

-Brian G.

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I don't know much about grippers but I am very familiar with servo's. To answer your question, any servo that fit's will work. It's just a matter of how much torque you will require if you get (or build) a gripper. You can go to just about any hobby store and get a servo. They start inexpensive, nylon geared and low torque to metal geared, high torque servo's. The only change will be the amount of current required to run the servo. I small inexpensive one won't pull much current but it won't pull much of anything else either. If you want to get something reliable I suggest a metal geared high torque servo. They are more money and will pull more current. I have a 2.6 ROV and found the servo that came with it lacking a bit (it worked but at extreme up and down it would stall and burn out. I build R/C aircraft with mechanical retracts and pulling up three wheels takes a lot of force. I use the metal geared high torques and have never had a problem with them. A servo in the "good" range will cost you about 15 bucks (micro servo size which is what the 2.6 uses). Best of luck if you take on building a gripper arm.

Steve

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