Ok guys, I have a design for the arms of my brat figured out. What I don’t know is how the little gripper is secured to the asb-04b. I looked at the product page and I guess its via screws behind the micro servo? I just want to make sure so that I can order what I need when ready.
Anyone have one of these?
There is a Little Grip Attachment Kit that allows it to be attached to an ASB-09 or ASB-10. Attach an ASB-09 or ASB-10 to the ASB-04 in the usual way. 
8-Dale
Not sure if “micro” was a typo or not, but I wanted to make sure you know that the Little Gripper uses standard size servos, not micro servos. Dale’s right in that you need the Little Grip Attachment Kit. 
You can also use the rotate method of attaching the Little Grip to a servo, as is shown below.
I wish I had time to add some 2DOF arms to a BRAT using the Little Grip. I can’t believe I haven’t seen anyone else add the Little Grip to a Biped.
I assumed that it used a micro servo. I missed the mounting kit. Sometimes its hard to see things on this tiny 2" pda phone screen. 
I want to work with arms also, and am designing a 3DOF arm for the front of WALTER’s new body. It will have a Little Grip and some sensors at the end of it.
8-Dale
Ok I found the attachment kit. It was under the chassis section. Perhaps a suggestion link could be added to the gripper product information page. At the bottom it could say something like “Releted products” and have link(s) to all available accessories to the gripper.
I also ment to say to mount it to an ASB-09b and not directly to the ASB-04b.
This is gona be great!
Thanks guys! 8)
This surprises me. I would have never thought to use the little grip as arms for the servos. I’ve always thought they were too big. Now that I compare my little grip to an SES bracket, I see that it is a really good idea!
This is what I plan to do for the arms. It will only have 4 servos vs. 5 servos as used with the biped Pete with lexan gripping hands. The arms will be a little long on the brat when you add the little gripper, but I’m ok with that. I’m guessing the tip of the little gripper may - or - may not just touch the ground.
There is roughly 8" ground clearance (guessing) from the shoulder servo to the ground and in the picture below the assembly is around 4.5" without the little gripper. I could make the arm shorter if I use an ASB-15b, but I want it to look like robotic arm which is why I used the shortest tube to provide a more “ARM” like look to it. The arms I plan to make are not expected to function with any kind of usefulness; rather, they are more for looks.
This picture is near 1:1 scale to give you an idea of size.
Here is a picture showing a temporary arm mounted. I don’t have enough SES brackets to make a complete arm so I made do with the extra SES parts I had, and made a cannon arm. The shoulders are going to stay but I need to tinker with an arm design to mount to the shoulder servos.
Never mind about the sticky wall paper in the background. The office used to be a play room for my two girls a few years ago. I’m not in to flower wall paper! 
Wow…looks…Umm…Interesting, I guess. 
I think you’d better tinker with it some more.
The head looks good, But the arms need some improvement.
Thank you for your constructive and insightful post.
Mike- Coming along nicely man, I think thats the first picture the lynxmotion community has seen of a BRAT with arms yet. Really makes me want to go pick one up, but after all the $$ I dumped into my J5 AND my latest micro-quad, I somehow doubt I can convince the wife
Your final design calls for 3dof arms correct?
It was a joke.
It actually looks quite good though, But I need some more pics of it. Is the
right arm (my right) finished? It dosn’t exactly look to good if its not… 
Yep, going to be 3dof per arm possibly 4dof if I decide to include little grippers.
I hear about the cost of other projects you have going, this hobby aint cheap!
No, I don’t have any of the arms ready. I just threw on leftover SES brackets (only enough for one side) to get an idea for the arms design.
I was thinking about going with the design posted in the above 3D rendered picture, but I’m considering using the Biped “PETE” design. Nothing set in stone yet.
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Ah, I see. Will it have hands? If so, It looks like it’ll be putting some weight on that BRAT.
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I deffinately recommend Biped Pete hands:
They will give your biped a more human-like appearance and probably the best way to pick up an object without having to bend over too much or rotate joints to pick up the object.
Looks kinda heavy though. Unless of course, you’re using very strong servo’s.
Actualy I think the lexan isn’t that heavy. I’d go more with a custom part that could be better for picking up stuff because I think this wouldn/t work very well.
Uhh, not exactly. If Mike is using a BRAT that has been upgraded with 475 servos (which Im sure he would be), these arms would work perfectly fine and would not need powerful servos to support. These lexan arms aren’t that heavy, the bigger issue would be if they were too long for his BRAT.
please make sensible and helpful posts.
