While working on a 'bot for the HBRobotics club and was thinking about what brackets to use to secure a pari of R/C servos to the 4" plastic disks, I first considered a pair of ASB04 brackets. While this would certainly work, a also recalled that I had bought the ASB13B dual servo brackets.
The ASB13B bracket works great! (where to put the 4" plastic disks, why even bother).
But I’ve got a problem, or at least a question. What’s wrong with the ASB13B in my pix?
My ASB13B doesn’t have all it’s holes! Is this an earlier version, or a mistake?
I could really use the extra holes in my brackets to attach the uP board(s). Can I get my brackets replaced? And I have a few parts to order as well (share the shipping).
Thanks!
Alan
P.S. the rubber bands are temporarily being used to hold on the 4-AA cell battery below the servos.
There is nothing wrong with the bracket. It was designed and manufactured before the additional holes were added. Right now the black anodized version has the holes and the brushed version does not.
Seems like an odd design. Are the brushed holes compatible with the black holes? (no pun intended).
Can you give me the X and Y Center-to-Center spacing of the bigger holes on the black parts? Perhaps I can add the additional holes. I have a few 'bots to build, but I really want the brushed parts, not black.
Thanks!
Alan KM6VV
Edit: I’m only finding the ASB-13 (black) part number, where is the ASB13B?
The bracket came-to-be as the shoulder for our first aluminum arm. At that point the holes that are there are all that were needed. Much later I realized the addition of 3 more hole patterns would make the bracket more useful. When the current version is depleted I will look at making the brushed version with the extra holes.
They are in the same place.
The holes are a mirror image on both axis.
Try clicking on “finish” just above Add to Wish List.
I fully see the reasoning now that you’ve explained it. And the bracket is much more useful now with all four quadrants drilled (punched?).
Any plans to update the brushed bracket at a later date?
That’s basically what I did last night when I drew the part to fix the locations of the new holes.
I came up with 1.4135" x 0.902" for the large holes. Not sure of the accuracy due to measuring off of the edges. The little holes would follow the horn pattern. Does this two-horn pattern match any other part?
I had actually grabbed a pair of ASB-04 brackets first. I’ve had them bolted up together before when I was playing around with the Mark III design.
The ASB-13B “chassis” works great! And a pair of ‘L’ brackets and a Pololu caster makes a good front/drag wheel. I can’t wait to get it powered!
The BH-02 “4 AA Flat Pack with 5.75” leads" can be attached under the R/C servos with Velcro. Nice fit!
What I’m missing (and needed precise dimensions for) is a transition board (adapter) to take the BB II on spacers, and bolt into four holes of the ASB-13B. Now that I’ve got the proper dimensions (I was off 11 tho’ on one of the dimensions), I can rework my bracket accurately. I’ll also put in holes for the Arduino UNO board to satisfy the HBRobotics club build.
Another addition that I haven’t worked out the mounting for is a solder-less breadboard from Parallax:
The IR range finders (not sonar, as previously mentioned) are currently just mounted by one hole each of one of the ‘L’ brackets, something better could be done here (and I really want them at angles.)
Thanks. I’ll just mill the extra holes, now that I accurately know their positions.
The “tongue” behind the horizontal bar slides between the R/C servos and the AS13B bracket. a 3/8" ball-bearing caster is out front.
Still waiting for the smaller Sharp GP2Y0A51SK0F sensors. Sharp GP2D120 sensors look forward.
Now that I have a card reader for the CF cards my Nikon uses, I can transfer pictures off the camera again. I’ve used the USB cable (simple serial com) for years, but it basically stopped working (yes, I reloaded the drivers).
