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    Re: Attacknid, a toy hexapod Mech warfare style

    Here's a video of the early prototype. http://www.youtube.com/watch?v=_6qpSOjtB2E&feature=plcp

    A Chinese company has already cloned the design, you can buy a mini version from radio shack....
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    Re: Beginner's help reading schematic

    The resistors are not a issue. (They might limit current, I'm going off you diagram for the chip, if they say their needed, put them the right ones in).
    The chip diagram you included drives the...
  3. Re: If there was one specific rule or part of Mech Warfare that you could change, what would it be?

    I've never competed but I've seen all the videos and all the bots that have competed thru the forum for the past few years.

    The scoring system is universal. What if someone comes in with a micro...
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    Re: Help providing suficient power to my bot!

    Consider it a small investment in going the lipo route. For a few bucks more and few days wait, follow the items that tican recomended. I would say go with dean's micro plugs instead. Your not...
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    Re: Help providing suficient power to my bot!

    Cell phone batteries are a waste of money. Regular batteries are a waste as well. You don't want to limit your current. That bot will draw around 3-7 amps in a extreme case.
    What I mean by that...
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    Project Re: Robot Controller

    Final pic of the controller. Anodized black this is the final external mod of the project. Still debating on filling the push button rings with some type of epoxy/paint and deciding on a color. ...
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    Re: Chimera (RX-64 Quad)

    Great Detail. You need to make the gat gun spin.
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    Re: PC Controlled Jib Arm

    Sounds like a cool project.

    The way your starting out looks good but the one problem is your looking to go 9in per sec. That's 540in per min and that is fast, real fast.
    Stepper motors wont...
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    Project Re: Robot Controller

    All finished up.

    I added a few more pics and some with it all completed.

    I'll have a movie up in a few days.

    I just need to get it brushed and anodized.
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    Contest Entry Re: AluHex: 4DOF Hexapod on a Budget

    See if the board you made will do what you want it to. Fix the issues with jumpers.
    Your going say to yourself man I wish I added this will I was making the board. So your probably going to make...
  11. Thread: My new biped

    by Quantum
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    Re: My new biped

    I was looking at your circuit and it looks like you have a transistor before your regulator.
    Not sure how your intending this to work. Its not acting like a switch but just passing voltage thru.
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    Project Re: Robot Controller

    A PC controller is way overkill. The simpler the better.
    All you really need is something that will use an xbee to transmit the data. I'm using a propeller(parallax.com) for my main processor and...
  13. Thread: Senior Project

    by Quantum
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    Project Re: Senior Project

    A opto isolator circuit would work to control the relays.

    Just find one that fits your spec/needs and it should be available in a dip package as well.
    ...
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    Re: How does a proximity sensors inductive work?

    Do a search for NPN or PNP inductive sensors. This should answer all your questions and there should be a ton of examples.
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    Contest Entry Re: AluHex: 4DOF Hexapod on a Budget

    Don't switch to the HS-55's. They are more accurate (they don't glitch) but they were made for light weight airplanes/heli's. They have weak gearing inside that I constantly striped. I have yet to...
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    Contest Entry Re: AluHex: 4DOF Hexapod on a Budget

    Cool project. I'm a big fan of them myself and have built a few in the past.

    http://forums.trossenrobotics.com/showthread.php?2274-QR-Mini
    I switched out the HS-55 for the HXT's. Same pattern ...
  17. Thread: hobby servos

    by Quantum
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    Re: hobby servos

    I have used the HS485's(mainly on the hip joint) there o.k. but after a while the Karbonite gear inside will crack from the stresses put on them.
    I have built lots of bots using hitec servos and...
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    Project Re: Robot Controller

    Its just a little bigger than a standard PS2 controller but thinner.
    It weighs in at 360g/13ounces with batteries. A regular PS2 controller weighs about 160grams.
    My Turnigy 3S 5000 20C Lipo...
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    Project Re: Robot Controller

    I want to control all of my bots with it.
    I have a bunch of hex's, quad's, a biped, a rover, a ax-12/standard servo arm hybrid and a quad copter I'm working on. All Xbee controlled.

    The...
  20. Thread: Bricked XBEE's

    by Quantum
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    Bricked XBEE's

    I had a couple of these and fixed all but one.

    I have one left that is a 1mW chip antenna and is actually the one I want the most to work.
    http://www.sparkfun.com/products/8664

    I used this...
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    Re: Gait implementations

    1. The joystick is a pot which gives of a resistance depending on its position. I believe they are 10k ohm. When the sticks are dead center horizontal and vertical values are 5K.
    using...
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    Re: RX-28 Darwin OP Based Mech: Tychus

    Do you mind telling us how much an order of that size cost? Total pieces made? And you did for you?

    Parts look great by the way.
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    Re: Free sensor ring

    Pm sent
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    Project Re: Robot Controller

    So here's another update.

    I'm finishing the circuit boards and will be ready to have them made in the next few days.
    The case has a new look and feel to it. Currently made from some type of...
  25. Question(s) Re: Dumb question, not "robot" related but robotics component related.

    Stobs the guy is trying to make something under 90 bucks.

    I agree with you point on over torque things.

    He wants the most control possible and force needed. Jack fits the solution.

    A...
  26. Question(s) Re: Dumb question, not "robot" related but robotics component related.

    Your not going to find a 5 dollar solution. Just buy the jack and call it a day.

    Really think about the amount of stress involved.

    I'll leave you with this.
    When you work on your car do...
  27. Question(s) Re: Dumb question, not "robot" related but robotics component related.

    Jack style lift like the one you posted is extremly strong for its size. Making something comparable out of motors and then fabricating a frame for it will most likely cost 2X-3X as much.
    You...
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    Re: I am so lost! Need help!

    Matt/Andrew/Alex end this thread already.

    This is a questionable liability against your shop & people's postings.

    Just delete the whole thread. I've been reading your forum for the last 3-4...
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    Question(s) Re: A Motor Controlled By Two Pins

    The circuit will work but your motors won't act like a servo. Its one way or the other. You cant control the motors like a servo. You could if you get creative with your software by a pulsing...
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    Question(s) Re: A Motor Controlled By Two Pins

    The basic program snipet would work for a servo only. Your feeding a pwm out on pins 0 and 1. If you have two motors then you either need to build a h-bridge circuit or purchase one. You wont be...
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    Project Re: Line Drawing Robot

    You could go a lot simpler route. Something like a tube with a cap on one end with a spring inside pushing on the chalk so its against the ground the whole time.
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    Project Re: Line Drawing Robot

    Scribbler Bot by Parallax might work.
    The trick would be how to keep feeding the chalk as it wears down.
    ...
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    Just For Fun Re: Which robot would you like to see?

    One that can walk and fly.

    All I have to say is lots of crashing involved.
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    Project Re: Robot Controller

    So here's an update.

    I have it all working talking between the controller and a dummy robot setup using led's to show outputs.

    I made a rough case for it yesterday. It currently has a...
  35. Thread: Regulating 12v

    by Quantum
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    Re: Regulating 12v

    Yup, Lipo Batteries.

    A 2s pack outputs around 8.4V. Probably ok for the Vex motors. But to much juice for the servos but the UBEC would bring that down to 6V which is perfect.

    You could also...
  36. Thread: Regulating 12v

    by Quantum
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    Re: Regulating 12v

    Another solution is to go the LIPO route. I think the best in your case.

    A LIPO would supply the motors without a need for a regulator. And a UBEC like Xevel posted is great. It outputs 5 & 6V....
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    Re: I'm broke...but I have a plan!

    When I plan a new bot project. I try to mimic what nature has done. Its been busy for the last few billions of years. Besides humans nothing walks on two legs. Really just think about it. Not...
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    Question(s) Re: Servo Accuracy issues

    Each PWM of a RC servo is ~.007 in degrees.
    180 total range/.07 per PWM ~= around 2600 PWM
    The max possible PWM a servo can have. This varies and can be less or more from servo to servo.
    If you...
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    Contest Entry Re: MorpHex, a sphere formed morphing hexapod

    How does the IK work on that? Do you just ignore the fact the body is expanding and the end positions are lost or do you figure that on the fly?
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    Question(s) Re: Power window motor hardened steel shaft?

    That's most likely been harden by a heat treating process. Even if you managed to drill that hole you would never be able to tap it.

    Welding would work but your right getting center would be...
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