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Surprised no-one has tried low volume water-cooling for their servo MOSFETs. Wouldn't take much flow/tubing diameter.

Well guys. I'm at an impasse. Do I print it in the bright blue, coffee, or yellow gold PLA? Thinking a mix of coffee and gold, but not quite sure.

The intent is to have the femurs sit with the tibia servo flat to the ground, which will adjust the loading angle on the servo you mention to be more of an inline pull and less of a twisting torque....

So, just got myself a 3d printer and decided to have another go at a mech.

Here's some teaser pics of the new legs:

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These are renders, as I'm waiting for the 20+ hr printing...

At max extension they are somewhat soft. They were used on a 60+mph brushless monster truck. That setup when going from full speed to max braking would drop the nose around an inch. I will likely...

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AX-12A for scale. A little long, but around the same normal length.

Edit: I already had the chassis, just can't use it for parts for my nitro version. Used everything else though

Stripped chassis with suspension intact weighs under 1 lb. Mostly plastic with a couple aluminum braces

Hello. I am working on a new quad for MW, and have some questions about leg mounting/design.

I am planning on using a 1/10th scale rc truck chassis as the main frame, and am debating on mounting...

Good idea.That way even if the main pc has crap data, the bots will still keep the good.

I suggest adding a known header and a checksum to the packet setup. For simple clearing of the damaged...

Not this year due to lack of funds/time.

I was perusing Hobbyking and noticed this:

https://hobbyking.com/en_us/turnigy-tgy-s518d-300-digital-metal-gear-intelligent-robot-servo-16-5kg-0-19s.html

It even says that it works with the...

I'm going to just leave this here.....

TX+Cam in one:

http://www.hobbyking.com/hobbyking/store/__89777__Quanum_ELITE_TX_CAMERA_COMBO_Micro_Cam_VTX_25mW_40CH_5_8GHz_NTSC_.html

Receiver:
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If the camera people are a problem, replace them with a mini-skycam and corner/building cams and/or a mini-cambot :D

The kidnapping could be solved by having there be a way to tell the robot it's...

True.

This chip might be a good option, as it could be placed underneath the xbee/other RF board to shrink the transponder a little.

I think we may need to have a list of standards for this system, such as target panel trigger signal type, transponder protocol, etc. That way we aren't running into 'Panel A won't work with...

That may actually be a good idea. Have two (or more) instances of the com port communications code available within the scoring hub's software that dumps the collated data into a buffer/registers...

The current setup has the Xbees in what? Multipoint mode? You could send a "All Reset" style packet though the network with a required confirmation to be sent back, and have Base resend if...

What about these?

https://www.sparkfun.com/products/9099

It should be a direct drop in, with minimal configuration. 900 MHz too.

A dremel also works well for Lexan/PC/Acrylic. My local Menards sells small pieces that I have used before. (one is the case window of my PC)

I use either the plastic abrasive wheel or the carbide...

Selling as I will not be working with HSW for a while(going to college).

Here's the product page for it:...

I may have to catch you for some AX-12A's when my paycheck hits in a couple days...

I was assuming an approximate 1.5ft total height, which would make for about 5in leg sections, considering the scale of RX series servos.

Looking great!

RX28 should handle it. HSW uses AX12A/+ in his legs, can walk with 7lb total weight. RX28 would increase the joint capacity to about 150% of the AX12,so one less leg should still...

One alternative to a logic analyzer would be to take a three wide set of female headers, and attach LED's to the signal and ground of each digitalIO you are using for debug. It would then be like one...

It's fine. We all learned something.

So, I extended the tibias with some aluminum bar, and that fixed the bobbing entirely. Now I have to decide if it is safe to bring liftHeight above the stock 30 to deal with the legs not clearing the...

My factory nunchuk is from shortly after the Wiis first came out. They were the original ones that came with the wii.

Little update. I uploaded KurtEck's code, and it worked perfectly with my factory chuk. Tician's code appears to use the init codes for 3rd party chuks, which could be why it didn't work right. All...

Got that fixed, and have data coming through, now just gotta figure out why all the values are pinned at the max (1023, 255, etc)

You could possibly try using something akin to a reset button on an Arduino (small clicky-dish type) as a foot sensor. Simple 1 or 0 signal, and fairly easy to set up. Just make sure it is stuck on...

What pins are you using? I tried arduino 1.6.7 with your code and my arduino uno r2, and still got no response.

Also figured out that the extra "Wire" library in the Arbotix repo was causing the...

I edit the Wire.write instances to Wire.send, and Wire.read to Wire.receive, and when I upload it I get nothing from the serial monitor

What code are you using? Everything I've found, even Arduino.cc's own code, fails to compile right.

Trying to read the milliamps that it is drawing, but not quite sure of the usage of the amp mode...

You have a logic analyzer, or a 3.3v microcontroller? (p8x32a, etc?)

If so, try using one of those. The arduino may not be reading the logic highs of the native 3.3v signal.

I have a couple...

Try powering the nunchuk directly off of a pair of AA batteries. At 1.8V when fresh, they'll provide the unit with 3.4V to work with. If the nunchuk draws that low, there's something weird going on.

I actually ran a bunch of 20lb fishing line through the bolt holes on the bottom of the coxa's in a net pattern that is always taut. It fixed a large amount of the bobbing.

What's a normal amount...

And he's walking again, with the new 3d printed parts. Just need to figure out why he bobs up and down so much. First stop, stiffening the center frame.


https://youtu.be/2mFGsS_Y3-U

It's too connected into the whole network. A lot of hacking would be involved to modify it for our uses, which would require removal of the global element.

When I have used the Nunchuk with arduino in the past, I just used jumper leads to directly connect it. It was even powered off the Arduino's regulators.

That Strider makes me think of Half Life 2....

IIRC, the Droideka used rolling (ie, Zenta's MorpHex-like) for locomotion. The pose in the picture is when they are stationary, as they are meant to...