Over 6ft tall? Very ambitious indeed... .... The only thing you can use regular sized servos for is maybe fingers, eyebrows, eye movement etc...You will need some seriously powerful servos/actuators for all other joints... The ezb4 would work well, but it sounds like it will be a very expensive project, though...

To expand on what Richard said, for a robot of that size, standard servos like those in the development kit won't work for the legs and arms or even for turning a head (assuming you want to turn the head and the head is the helmet).

The standard size servos would be good for moving small things and sensors.

To get some ideas of how you might build arms for a larger robot I would recommend you check out the LEXI project page:
https://synthiam.com/Community/Questions/4626

As for walking legs for a full size humanoid, I don't know what to suggest other than in general you'll need some very powerful motors and gearing systems. Most robot builders with larger robots opt for a wheels drive train instead of legs because it removes many design problems and wheels systems to support a larger robot are numerous. Most folks obtain a powered wheel chair. PowerWheels children's cars also make good wheeled bases for larger robots.

RoboMicke, Looks like a very interesting build, a 6 ft. Humanoid. I also have a mannequin body I would some day like to use with EZB. I like your ambition, but I plan to use a wheeled base platform, like IRobot Create. Smaller biped robots are more practical, but don,t stop thinking big if that is your dream! Larger requires many more resources, power, time for specialty fabricating, and a much larger budget. The kit servos maybe can be used for wrist or hands. The helmet/head may be too heavy? HD DC motors may be a better choice. servo City has HD slower, stronger low geared servo units. Daves B9 build utilizes some HD DC motors. You will like EZ Robot, it is very versatile and advanced, with support for many platforms. Thanks for sharing and post any updates. Steve S

Looking at it, you'll want a very strong, sturdy frame to mount servos and circuits on.

The helmet head will need to be lightened to make it easier for servos to manipulate it.

Heavy duty servos from the store for a minimum for this project if you ask me. You'll need a lot of torque in this build, which means more expensive servos.

You would want it to be very light.

And personally, if you want to make it walk have it as a robot bottom with big feet to help it be balanced.

I've been (kinda) secretly working on a life size biped for the best part of 2 years now, it's still in the planning stages and there have been a lot of "problems" to solve, more which have yet to be solved and most likely a bunch more I haven't even considered.

To be blunt, the servos used are a fair way down the road yet, unless you have already designed the framework and know the strength and weight of every limb on the robot. If you had done that already you certainly would know that standard servos are not near capable of lifting the mass of the arms or the legs.

Even once the frame is worked out, the servos figured out etc. you need to look at stabilising the 6 foot monster. Humans, by nature, can walk without consciously thinking about it, a robot can't. You need to think about how to program it to counter the shift in weight and centre of gravity while carrying out any programmed movements but you also need to figure out how you can counter those same shifts if it bumps in to something, trips, slips or gets knocked. You need to think about how it would protect itself as best it can when it falls... The list is huge!

There are many reasons why some robot makers will opt for a wheel/track based drive train over biped.

My hat is off to you for such a big project and as always I will be offering help when needed as will the community but I want you to be aware it is a mammoth project (I have pages and pages of sketches, calculations etc. for mine already, for the past 6 months to a year it's looked less and less likely it'll actually come to anything more than just theoretical plans due to the insane costs involved). But good luck!

Wow, I love your enthusiasm and foresight. I will be following your build with a mixture of envy and excitement. Dont let the hiccups thst you may encounter discourage you from you goal. Good luck

Hi,

thanks everyone. I would like to try it with strong servo s recommended to move the legs get moving. but those servo´s can be connected to the EZ-b v4? I have a lot of sketches created on what I hope to work. also, I have seen a youtube movie how I can best run the robot. If the robot walks I start with the arms. so can i see what is doing whit the gravity centre. and where can i find the right servo , that is strong enough?

thanks again

best regards Michael

Here are some high powered servos Torxis servo

You're going to need quite a few of these... Yes, they can be controlled by the ezb4, however they should be powered directly via a large 12V SLA battery...

Have you considered starting small scale with the EZB4 developer's kit? Get a grasp of how this will work and then upscale from there? Your 6ft robot is already pushing $2500 (plus) in servo motors alone....

Not trying to discourage you, but as @Rich mentioned projects like yours can get seriously expensive....