I've been thinking a lot about how I should post my Wall-E. Whether to post the finished product and possibly a video of a dance routine or to show the work in progress. I decided to show the work in progress and my plans in hopes to give ideas to others. And also because updates may be in long intervals.
I dont have pictures yet but will soon.
Here are my plans I want to implement.
Articulate each eye using 2 HXT900 servos. Its possible that the smaller SG-50 will work too. (Completed)
Articulate neck vertically in two places using HXT900 servos. Completed. In hindsight I should have used a stronger servo at the bottom. The additional items added to the head puts it at its limit.
Give left and right movement greater than original. (Completed)
Install a pinhole type camera beneath the head. Not inside the eye because of #5. (Completed however I havent received the receiver yet so I dont know if it will work right) UPDATE Doesn't work right.
Install BlinkM LEDs inside eyes.
Make arms move up and down.
Make arms telescope in and out using flexible pushrods. (Complete...kinda...still working out servo placements.)
Use tamiya dual motor drive. Why you ask? I want to play around with the gearing so I have enough play in it for #9. (Partially installed. Need to order a hex rod to extend the driveshaft.) UPDATE I fixed the drive shaft but in hindsight once more I could have used a modified servo and it might have worked.
Make Wall-E be able to tilt forward and back like in movie. I think this may enable him to move the front of his tread in a foot tapping motion. Hope that works. UPDATE Completed. works like a charm.
Sound capability for voice clips.
High capacity battery pack installed very low to prevent tipping. (Completed)
LOL Maybe some EL wire underneath for that ghostly glow.
I feel like I forgot something. If I remember I will edit the post.
Thank you DJ for EZ-B!!!
....and thank you to the inventors of the Dremel tool and glue gun!! Both god sends!
I can't wait to see pics! I love the el wire idea, I used some for my omnibot and it really sets him off.
Wow! pics, pics, pics!
Ok but it's pretty rough right now. Hmmm image url? I dont have photobucket.
Here you can see the camera and the two servos for the neck. One is embeded inside.
I plan on replacing the lower servo because its a bit wobbly with all the weight on that servo horn. I will post the part info tomorrow.
I wish I ordered a thinner push rod. This one isnt as flexible as I wanted.
I forgot to mention that I had bought AA sized Lion batteries to install in Wall-E back plate to power the EZ-board. You can find them on Ebay really easily. However you will have to modify the wiring as each of them are rated at 3.7v. If you remove the tab that joins the middle two batteries and dremel it into two, then all you need to do is join both pos(+) and negs(-) together with additional thicker gauge wire. Dont use the original wire just in case you add more current demand in the future. I would imagine it will heat up pretty good. This should give you 7.2v to pass to the EZ regulator. I plan to only use to power non-servo electronics.
Happy New Year from Qatar. For me it was 8.5 hours ago.
PS. Of course if you go the Lion route dont forget to order the charger too.!
DJ, My video receiver doesnt seem to work in EZ-B. It is recognized as a camera option but no video shows. However it does work in other programs. As a side note though....there is a fair amount of lag with this receiver when used as a webcam. (nothing to do with EZ because it isnt even open when I tested it.)
Here is my receiver and Here is my camera.
I hope I can find a solution so that I wont have to add the camera IN the eyes. :/
hey click
any chance you can post some pics on how you articulated each eye, im having trouble with this....
thanks buddy
dont leave me hanging G-lick
Sorry for being late. Here is how i put the servo in. As you can see, with a little dremel action and hot glue the micro servo fits inside nicely. All you need is to figure how to connect a push rod to the center stalk. It doesnt show it on this pic but I used a section of thick tie wrap i had. What will work better is a thin metal rod.
I'm currently working on Wall-E's feet. It seems to work ok. I just need to refine the clearance between the servo horn and treads.
Here he is just straight and level.
Leaning back...
Leaning forward...
and my favorite...one toe up...
Here are the servos inside with modified tamiya drive...
Here it is with the track removed so you can see how i attached the servo horns. The vertical one is hot glued to the free spinning wheel on the "foot" to act as a pivot point. However i should have added 1/8" spacer first for clearance. I will fix it when i get a chance this weekend.
Im hoping this gives him the personality and choreography possibilities I want.
I fixed the pictures from previous post. I hope it helps the idea pool.
Wow! Toe up is really cool! Body tilt is now also on my list! I need to get it in gear!
IM DOING THIS, IM SOOO DOING THIS.....
My problem is i dont have the u command wall-e i have the stupid disney store remote wall e
same size diff tricks.
eyes dont articulate but the neck moves in and out of the body.....
arms dont go up and down but rather the hand,moves in and out....
so, im copying your idea, but modifying the hell out of it for this stupid wall-e
but great idea....maybe more pics of the arms that tilt him...diff. angles...
thanks man.
Glickclik - thanks for the help...i have been obsessed with this project since i saw it. can you help me out a little?
OK, i see you have to use a h bridge for that type of motor.
I'm assuming you are using the tamiya drive motors for the "slack" it gives while the "tilt" servos moves the body up and down, correct?
can i do this with modified servos instead of of the tamiya drive?
for instance
Servo one and modified servo 2 are both hot glued to the wall-e body
If servo 1 is for the tilting feature (attached to the arm attached to the free spinning wheel)
Will modified servo 2, (attached to the turning wheel) allow the movement?
or will i have to also instruct modified servo 2 to co-inside with servo 1 to allow tilting motion?
my worry is : since both servos will be "on" if servo 1 tries to tilt the body, modified servo 2 will remain stiff (since its not being told to move) thus not allowing the tilting motion.
or
will modified servo 2 allow the motion of servo 1? (again, since both servos are hot glued to the wall e body and attached to the wheels but for different purposes)
thanks.
Ya know I was operating on a hunch I needed to do it that way. I havent any experience on the modified servos. As I think on it, you may be able to use them. Anyone correct me if Im wrong but modified servos are no longer "stiff" when at a stand still because there isnt a potentiometer feedback present. Even if so you should be able to do a servo release command, then tilt. The tilting servo plus the weight of wall-e would easily overcome the gear resistance of the modified servo. I say try it. I will do it that way on my next Wall-E just for simplicity.
What kind of photo angles are you wanting?
GLICK!
thanks for the reply's man,
this is actually why i started the other thread (attaching the servo to the wheel assembly)
ok cool, so the weight alone and the tilt servo should over power the modified servo, and boom! i have tilting.
will this damage the modified servo?
if this works i can abandon the whole, servo ontowheel, idea....
im def trying it.
thanks again for the help and the great ideas....
one more thing.....are you using only 1 servo for tilting? or is there a second doing the same think on the other side o the wall e
as far as angles, maybe a straight on view or top view of the servo arm attached to the free spinning wheel....
just trying to get that arm like yours.....
thanks GLICK!
Just to be clear, you may have to give the release command to the drive wheel servos to get them to be loose enough. That means tilting while standing still too. I am using two servos for tilting. By lifting both feet, Wall-e tilts forward. I hope this helps.
A short video of it in action soon!
Click To Watch Video
nooooooooooooooo linky no workie
Fixed it. and oh yeah here are the other pics you wanted.
sick!
i just saw the pics, thanks a million man!
That is soooooooooo cool. Great job!
@hoolagen1 You're welcome! I didnt do it yet but the servo arm that's attached to the free spinning wheel needs a spacer to give it clearance from the treads. Maybe 1/8".
@bookmaker Thank you! It was a lot of trial and error. :/
I, for one, am glad you decided to show the work in progress instead of just waiting until it was done. Quick question: why are you planning on using BlinkM LEDs for the eyes insetad of just RGB LEDs? I bought a BlinkM but found that because of the EZ-B, RGB LEDs basically do the same thing for 1/10th the cost. I'm saving the BlinkM for a future Arduino project.
@choyster No reason in particular. I've been wanting to check them out and at worst I could use them in another project.
@hoolagen, Im gonna do the next Wall-e without tamiya motors just for simplicity sake and to eliminate the hbridge for space inside. @anyone who has modified servos for drive wheels: do the servos stay stiff when at a stand still? Im holding off on the extending arms until I can find thinner cables for it.
not sure if this helps but i think there is a new feature o the ezb....auto release....im assuming with will un-stiff the servo for "slack"
also, glick...are you using the relative servo motion or multiple servo motion for the body tilting.....
like you i have articulated each eye....im using the relative servo motion to control both eyes....just wondering what your doing...
thanks, Glick
@hoolagen1 I haven't worked on it in a while but I left it as individual control for the eyes and feet. I need to get back to work on the eyes. My mount point on the center came loose.
--Update-- Finished repair on eyes. Pix and video soon.
looks good man. i wish i could have gotten that wall-e instead of mine.
Dont say than man. Yours is turning out great. Plus just like you said yours has different things it can do.
epic, I am a 12 year-old-kid who is buying the ez-b right now. SOO COOL eek
Youre going to have lots of fun!
Yah this stuff rocks, kid you will love THIS!
To Glickclik:
Do you have any progress about 2.4 GHz camera and receiver, because I am thinking about the same idea to use both eyes for LEDs. Camera from DJ is little bit bigger... ?
To tell the truth I havent worked on it in a while. The next thing I was going to try and use DJs receiver with a smaller camera. I've been devoting my resources to the Omni. Eventually I will get back to him. Have you seen the other Wall-E's? There are a few great ones and they arent using LEDs. Best of luck.
Yes, I have seen maybe all of them, but only one is like yours - yours with smaller camera.... . I asked DJ, if he knows something about the others 2,4 cameras, I am still waiting.
I have one of those camera, it won't work because it is not a computer webcam, it has to be a wireless PC webcam for ARC to be able to read it and use motion/face/color tracking, nothing else will work. On my Wall-E i use the same camera came in EZ-Robot kit and can still put LEDs in the eye but i choose not to because the original Wall-E from the movie didn't have any LEDs, only the toys do, i wanted him to be true to the movie as much as possible. I'm trying to add a red laser between his eyes
It will be nice, but carefuly with power of laser LED .
I'm aware of that laser will only be on when wall-e neck tilts down to floor and have him chase the red dot, that's my imagination not sure if I can actually get it to work.
Does your Wall e speak and understand words ?
its work in progress but yes he will be able to speak and understand some phrases, look at DJ's Wall-E video and speech recognition tutorials.
What platform are thinking about, I mean name of board for sound in wall e
Check my wall-e build, details are there
@Glickclik Wow, your Wall-E project is looking nice. Giving me lots of ideas Looking forward to updates.
Gunner
You have got to see LouisT's Wall-e head. Its incredible!
Glick,you are coming along!
If you are afraid of the load being too heavy on the servos, check out D.J.'s last entry into his store. servo clutches that mean you never have to burn out a servo again. I have burned out a half a dozen in my day.
Keep up the good work,
Mel
Thank you Mel. I saw those. They would do the trick. Mainly in the little time I have I spend on my Omni2000. So its slow going.