More SES robot arm assembly questions

Lynxmotion Robot Arms
1

Hi,
This ( abm.wso.NET/Base.jpg ) photograph shows our assembly of the base for the SES robot arm when the servo is at midposition (1500). We assembled this to match figure 9 in the ARM BASE ASSEMBLY MANUAL. (Actually, I think we are off by one 15° tooth) In this orientation, the robot arm can move toward the front, left, and right. However, subsequently, we noticed that figure 3 in the RIOS manual as well as the very first figure in the ARM BASE ASSEMBLY MANUAL show the arm as reaching to the left in the servo midposition. Question: does it really matter?

Second question: you will notice in the photograph that we only used three screws to hold the aluminum bracket down to the rotating lexan disk. This is because there were only three screws of that size (2-56 1/4" steel machine screw) in the base package. (So far, this is the only kit shortage we have found). To your knowledge, is there anything else in the kit (we have the SES robot arm plus the optional wrist rotation upgrade) that we might be able to pirate and use here? I don’t have access to a hardware store.

Regards,
Joe

2

It shouldn’t matter at all, as long as the arm reaches where you want it to reach. It’s up to you where you make the centre point.

I’m not sure about the screws, as I don’t know what screws are left over in the kit. Maybe someone else can help.

3

This isn’t really a shortage - the “C” brackets in the arm kit have plenty of the 2-56 x 1/4" screws included to use for this step. Please let me know if you still have more questions. You will have hardware left over when you are done with the assembly.

4

Steve and Beth:
Thanks for the replies.
So far, the assembly is going well. The nice collection of online manuals and tutorials is extremely helpful, as or the forums (fora?).
Joe

5

Having built the BRAT chassis recently, I agree that the online tutorials/manuals are extremely helpful. It made the assembly process a breez. 8)