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Misc / Re: Hello everyone at Society of Robots!
« Last post by cyberneticdreams on May 20, 2016, 11:50:21 PM »
Hi Mklrobo,

I really like your reply! So your favorite is Data! That's awesome...any episode he's in is fascinating to watch what he does and how he communicates. Glad to hear he's your favorite.

I remember watching Star Trek: The Next Generation with my Dad when I was little (so this was back in the early 1990s). It was when I watched this show that I learned the word "android," and then "humanoid."

And CHAPPiE! OMG I love Chappie. For a long while I,Robot was my favorite robot film but now CHAPPiE is pretty much tying with it now. To list, my top 3 are I,Robot, CHAPPiE and Big Hero 6.  If someone asked me what is a movie I can't stop thinking about, it would be CHAPPiE. It's unlike any other robot movie I've ever seen. I may have empathized too much with Chappie (but I'm actually an empath, that's probably why). His robotic design is… it's very unusual, but the character is captivating to watch because of how he deals with his consciousness and experiences. Though, I should see Elysium in its entirety too... just because of the robots (I'm so bad!).

Mklrobo, do you have a favorite Data-centered episode of Star Trek: TNG? I haven't seen all episodes, but I've seen "Brothers", "The Offspring" and "Inheritance" on BBCA all within the last several months, so let's see what happens… ;)
Electronics / Re: Looking for a Small High Torque 12V DC Motor
« Last post by bdeuell on May 20, 2016, 07:49:43 PM »
superdroid robots has a good selection of geared BDC motors you could check out their selection.

i would be very cautious of any ebay china items. i definitely wouldn't trust the engineering data they provide ... but it seems like you figured this out
Electronics / Re: Looking for a Small High Torque 12V DC Motor
« Last post by dbassman on May 20, 2016, 10:52:44 AM »
It sounds like you have already tried some motors with these specs, what did not work?

First off, I have to admit I don't know a lot about this, but I'm trying to help my partner find a more powerful motor for our needs.

We got a couple different ones from China off ebay & they did not have the power of our current motor with lesser specs...  We're currently using this motor , but would like one that's a little stronger (more torque). Were also afraid with our current motor that the planetary gear pins will begin to fracture.

The other issue we're having is trying to find them at a reasonable cost, trying to stay around the $15-$30 range. If we have to spend more, we will Just trying not to!

Any help would be greatly appreciated!
Electronics / Re: how to turn servo controller right with 555 IC ?
« Last post by bdeuell on May 18, 2016, 04:08:39 PM »
what is the value of the capacitor you used? the capacitor in the breadboard picture looks like an electrolytic cap which typically have higher values than the 100nF specified in the schematic.

i didn't check the values specified in the schematic but assuming they are appropriate for the signal the hobby servo needs i think the circuit should work.

other suggestions
- double check all your wiring
- replace the 555 timer IC (ensure it is installed in the correct orientation)
- check the voltages at different points in your circuit and make sure they are what you expect
- (if you have access to an oscilloscope) check the output signal and capacitor voltage 
Electronics / how to turn servo controller right with 555 IC ?
« Last post by converge on May 17, 2016, 09:28:08 PM »

Im very new to eletronic and Im trying to control a servo controller. Im able to turn it left, but how to turn it right ?

This is the diagram i followed:

And this is how I think it should be on breadboard:

Did I do something wrong ?
Misc / If you had a programmable robotic arm, what would you do with it?
« Last post by VIRGIL-Arm on May 16, 2016, 12:00:37 PM »
Hey Guys,

I'm trying to plan a few summer electronics projects that I can keep busy with.  I'm looking for some cool, useful applications that a robotic arm could be used for.  An example of an application would be an automated dog-fetch toy that can identify a ball, pick it up,and proceed to throw it.

If you have any cool idea, feel free to let me know!
Misc / Re: Hello everyone at Society of Robots!
« Last post by mklrobo on May 15, 2016, 11:53:39 AM »
 :) Hello!  :)
I thought I would respond to your insights in the robotic world.
My favorite robot, of course, is Data, on Star Trek's Next Generation.(surprised?)
The science fiction on the interaction of Data with the Crew of the Enterprise is one that
always intrigues me, and has given me lots of entertainment.
Robotics in movies like Chappie, Silent Running, Elysium, Forbidden Planet, and Star Wars provide
different perspectives on how robotics are used in different situations.
Real world robotics, of course, will be different, but indispensable. Technology can provide greater
resources for more people.(human work being converted into tech work/studies). In this exchange,
robotics offers great hope in resource management, where only impossibilities existed before.
Have not heard of Android Karenina, but will look into it. Thanks!!  ;) :) :D ;D
Misc / Re: Hello everyone at Society of Robots!
« Last post by cyberneticdreams on May 12, 2016, 11:00:19 AM »
Hi Gina,

No, I haven't read Android Karenina. I looked it up a little bit. I'm actually more inclined to read robot stories where someone has a robot friend like in the movies Big Hero 6 or The Iron Giant  ;D. I tend to get quite emotional about those types of stories :'(, but I love them. There's a story that I recently learned about it's existence, called The Runaway Robot written by Lester Del Rey. I found out for that one, I'd need a box of tissues too. I would like to read that one sometime, even though some might call it a children's book, but I want to read it to know the story. I guess I'm a sucker for "robot friend" stories...

But thanks for asking about Android Karenina. I didn't know that book was around and now I know. :) I noticed you liked Lost in Space and The Jetsons in the other topic. Are any of those robots your favorite?
sorry about the weird title not sure how to word it, BUT, here's the thing.

I'm working on a project for which I need a way to create a resistance in the hands, It would be the kind of situation where without actually having any materials one would do a grabbing movement and it could feel as if it was grabbing a metal cup (limited give)

Drawings and/or photos of your existing setup would help.

It will probably be hard to find a narrow (i'm guessing you are thinking ~1/4") timing belt pulley with a 2" bore. You may need to modify or otherwise manufacture a custom pulley to go this route.
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