Additional Servo in RN arms

[hivemind]

Your bracket looks very nice Matt, although it seems like that bracket would be a different design from the one I am using (I wonder why we all have different designs... hmm, weird...). Fate of the universe? Calvinism? Random chance? We both have a little too much free time? Or is it that you are correct and we are both able to make bracket? Wonder I do...

I am curious however Matt, why do you bother having all the holes inserted arund the servo horn hole-instead of just four-? From what I see in your picture it also seems that we have reversed the brackets from my deisgn (my triangular U-bracket contains the four screw holes you inserted into the stock U-bracket)-but thats just an observation. So my final question will be, have you found any significance to pushing the servo down to one side (in your new bracket). Because I have mine centered and it works really well. Just curious how your experience has been Matt.

*raises hand*

[Chrisbie]

"If we ignore things, they tend to go away"

I totally agree with this. I guess Im not the only one who feel the same thing. but mine was worst @-$$$$$-!!!. I should have done that before "IGNORE THINGS and HOPE IT GOES AWAY"..

Comes worst to worst, you will feel harrased, so better take the advice... I have nothing against him now but obviuosly you know the reasons:

"It's about your general negative and know-it-all insulting attitude in the forum"

"Your 3D designs in your signature look pretty good and if you remember the initial response to your designs was positive (http://robosavvy.com/modules.php?name=F ... opic&t=442), but from then onwards your attitude just put people off"

"The Capt obviously has some major problems."

"Oh God, it's nothing like your pathetic piece of cardboard nonsense, Capn. Now I know why your sites URL is 'brainless.org'"

[tempusmaster]

My goodness...

Come on, show of hands... who's having fun w/ their robot? Remember fun?

Okay. I'm having fun with my robot(s). You asked for a show of hands - how about this one:




or, if you like simplier, more straight forward designs, then I'll raise this hand:



or, better yet, how about this one?

[bauermech]

why do you bother having all the holes inserted arund the servo horn hole-instead of just four-?

Well, thats probably where the 'I have too much time on my hands' thing comes into play. No really, I was concerned about an arm being ripped off during ROBO-ONE. Same holds true with the leg rotation brackets. If the horns were aluminum it'd be another story.

From what I see in your picture it also seems that we have reversed the brackets from my deisgn (my triangular U-bracket contains the four screw holes you inserted into the stock U-bracket)-but thats just an observation.

Yup, you're right. The 'ol flip-a-roo

have you found any significance to pushing the servo down to one side (in your new bracket). Because I have mine centered and it works really well. Just curious how your experience has been Matt.

Hmmmm. I should really take some pics to help explain this... I'll get some around after I get done putting Pawn back together. I'll do my best now though...

I moved them off-center to: #1 keep 'em aligned, #2 when in their 'home position' there is an ample amount of surface area on both the modified servo casing and bracket to help support the rest of the arm. However, when they turn, they (the horns and shafts) are on their own to support the weight of the arm (not that there's a lot).

I doubt there is a significant difference in overall functionality between the two.

The second generation of Rook's Pawn consumed all 24 servo ports with the rotating arms in place. It's functionality was nice, but made him a little extra top-heavy for me. I ended up scrapping the arm rotation in the end (at least for now). The leg servos really dig the extra support, so it's staying like it is.... like I said, i'll get some pics around.



Nice hands Tempusmaster! Some one needs to make some shooting Gundam rocket fists

[1UpCheatachu]

I really the extra DOF on the arms. There's a lot of possibilities with that... Perhaps I will do that someday. I don't know how to fabricate, but it looks as if a U-Bracket would work, but I could be wrong... Would a U-Bracket work? I can't possibly fabricate a part....

[beermat]

Here's the arm mod I'm currently working on:

[hivemind]

awesome! you should rotate that hand servo 90 degrees so it can actually spin that blade and chop up some... other robots. Of course

That is pretty nice looking attachment you have there.

keep up the nice work.

[bauermech]

That gives new meaning to the term 'Rollerblade' huh

[tempusmaster]

Nice hands Tempusmaster! Some one needs to make some shooting Gundam rocket fists

You may run into some sooner than you think. 8O

At the last ROBO-ONE competition in Korea "Gadget-1" defeated Dynamizer by using a spring loaded 'rocket-punch' arm design.



I haven't been able to find any closeup details of the arm, but have been told that it has a motor that winds up a heavy duty spring. The punch is deadly, but it may take some time for them to rewind and reset it. They haven't shown up on the ROBO-ONE 10 entry list yet - but there are still a few more days for players to enter.

[beermat]

That gives new meaning to the term 'Rollerblade' huh

lol, 'rollerblade'. lol.

The blade is attached to a DC motor, although not too well. I just noticed the blade in Home Depot today, and the thought crossed my mind! It spins nicely, with a bit of vibration, but I need a more secure way of attaching the blade to the motor shaft. Also, as you can see, the bracket attaches to only one side of the servo, with a longer piece of aluminum wrapped around the motor and screwed back to the bracket. Strong enough to hold in place whilst spinning, but might not prove to be strong enough to be able to use the blade for cutting. Still, that's my first ever home-made aluminum bracket, so I'm chuffed

[bauermech]

You might be able to use a Hitec HSR-5995TG servo (333oz.in. of torque - .11sec/60degs. @6.0v), remove the pot and servo stops on the drive gear. That'll give you a fast & powerful continious drive motor. As for attaching, there's a third-party after-market aluminum over-sized servo horn for Hitec servos... may want to look into it.

[1UpCheatachu]

Hehe, nice arm thingy, Beermat. You could do some serious damage with that! Consider entering it in Combots!

I'd like to do the rotating arm mod at some point, but I can't/ don't know how to fabricate parts. I was thinking that mabye a U-Bracket could work? It looks a lot like it's just a U-Bracket....