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Asked — Edited
Resolved Resolved by Xuven!

Need Some Help /Wire Diagram To Go By

I have taken a couple of years off of this omnibot 2000 build. I kind of get stuck, frustrated and quit. Then every no and then I comeback and look at it again. I have watched a lot of the videos people/bot have recommended and I'm still stuck. Mostly this is because I'm not an electrical engineer...LOL I know how to take things apart and monkey with stuff. I can solder and follow instructions but this project has stalled. My main issue is that the videos go to fast and are not detailed enough for my limited knowledge. So here is where I'm at. How do I wire the hbridge to the ezb and battery and how do I wire the 8 motor wires to the hbridge? Here are a couple pictures to show what I have going. Thanks in advance for any advice.
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Related Hardware EZ-Robot EZ-B v4
Related Controls EZ-B v4 Info Dual HBridge
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#19  
ah the 3 ports on the ezbv4  is 12 c is ( sda, scl )thanks learn some.
#20  
No dice! HELP!!!

I have the three pins on the right soldered in. S1, +5, and GND. I tried putting it on a d10 an ADC0. Obviously, I have no idea what I'm doing but no light.

All of the tutorials have broken links or no video on youtube.  Looking at the picture above do you think it takes all 6 pins? I'm stumped.

If anyone has any advice on what pins to connect to and what control to add I would appreciate it. All I want to do is give this bot some eyes.

Thanks,

CMC

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#22  
@CMC206
I assumed when you mentioned I2C it was an I2C device.

Looking to the specs that is a neopixel and you cant connect directly to the EZB.

you need a neopixel controlller and or  an arduino or a parallax controller with custom firmware.

Search for neopixel to get an idea of what it is.
#23  
Thanks I will look in to that. I thought it was worth a shot because they were cheap.
#24  
The Parallax LEDs were a bust. I got some BlinkM LEDs and now I'm waiting for the camera extender and IC2 cables from EZ-Robot. In the meantime, I'm looking at putting a servo in the head to do just left to right movement. I'm going to put the camera in between the eyes to do movement tracking. What I'm looking for are any pics or advice on how to mount the servo in the Omnibot 2000 head. What parts to toss and what parts to cut and the alignment of the servo. From pausing DJ's video it's not quite enough and it looks like the head would be a weak point if someone was to pick it up by the head. I know there might not be a way around that but I want to start off in the right direction.

Thanks,

CMC
#25   — Edited
I used https://www.ebay.com/itm/Servo-Bracket-2-DOF-Short-Pan-Tilt-Sensor-Camera-Mount-Kit-Camera-Gimbal-MG996/152696892625?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649. 2 servos for up/down and left/right.  Mounted the bracket on a piece of cardboard with a lot of hot glue. This is just a place holder til I i finish the 3d model for something more solid. I cut away part of the neck to try to keep it stock looking and still use the original hose. The top of the pan/tilt bracket is glued to the bottom of the head. I left enough of a gap to run the servo leads from the eyes down to the EZB
#26  
Thanks Xuven,

I just got the idea to use one of my Disc Golf mini markers to make a frame for the servo. What I was getting at is which way do I mount it? Sideways or front to back? Or does it matter? The ultrasonic servo I can set the radius that it can turn. I'm not sure if that applies to the motion tracking so I want to get it right before I break out the hot glue.  =)


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Front to back?
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Sideways?
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#27  
Sorry in advance for the poor images but it was hard to get a good picture. In the collar I have 2 layers of cardboard glued together.  In the middle is a cutout for one of the servos to sit in. The other servo sits sideways on top in the bracket linked above. It's really close to the opening in the collar and the top of the bracket is glued to the bottom of the head piece.
#30  
Perfect. Thank You!
#31  
That is pretty sweet! You convinced me to do the same thing. I got the 2 servo mounts on amazon for 14 bucks this morning. Do you have any other pics of the neck/ bottom of the head? I looked at the project pics on your profile and the video link you posted. That is giving me ideas on how to do it. Thanks again, my friend!

CMC
#32  
I had the same issue of finding pictures. I told myself I would take some and document along the way...never happened lol. If you can post a picture of the bottom and top of the collar. I should be able to use paint and draw something up to help you get started
#34  
Thanks, EZang60. I got the hbridge figured out. Tonight I got the I2C cables, camera extender and jumper cables set so I was able to connect the BlinkM leds to the eyes and mount the camera. I'm waiting for the servo mounts that Xuven suggested and I will get his head right. Baby steps but I'm happy with our progress. Here are some pics of the eyes working. Cheers! CMC

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#35  
Very good, have a nice week end
#36  
I had some difficulty doing the verticle servo so I just opted for the left-right movement only The good news is that I will be able to use the other servo in one of the arms. I was worried that I might burn out a servo or my kid might if we didn't hit an init script before starting. Even then every time I plug in the EZB the servos they all make a move to the right or a 0 position. So I did this repeatedly and that's when I got worried about the vertical servo that might get hung up. I figured that the left to right I won't have to worry.




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#38  
I got the same one as you linked. No worries. Moving on. Head is done and now I'm going to do an arm.