Asked — Edited

T-Hex With Ez-B

I am building my first bot. Wish me luck. Lol. I have a T-hex 3 DOF chassis with EZ-Robots HDD servos and plan to use the EZ-B as the controller. I have the EZ-B v4/2 Developer Kit on the way. Will the EZ-B be able to handle the current draw of the 6 additional servos? I am no stranger to RC or drones and thought this would be a challenging project.

Thanks, Jeff User-inserted image


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Germany
#1  

Dear Jeff, nice robot! you can use 24 Servos at the same time. all what you need is a good lipo battery or an modular power supply with enough Ampere. a powerful low-budget computer and W-LAN Connection make sure that all work perfectly.

United Kingdom
#2  

Jeff, I built a Hexapod called Ziggy’ with 3 DOF with 20 servos in total counting the head movement Servos. You do need a good battery, it’s a heavy current drain on the battery. I have two one for the EB-Z controller and the other for the Servos.

See my posting I did a while ago:

https://synthiam.com/Community/Questions/10864

Enjoy your build and working with the EB-Z controllers, there GREAT!

#3  

Thanks Smarty.
I have lipo batteries and chargers that I use for my drones so I am familiar with batteries. I have a laptop, iPad, and Android tablet to utilize for this project.

cem I have seen your post on Ziggy and that is why I picked up the T-hex. I also plan to run a dual battery setup in hope of preventing controller brownouts. I also plan on putting the camera on a pan/tilt set up. Looking forward to using the EZ-B controller. Seemed like the best solution for a beginner. I also am planning to build an R2D2.

#4  

Hi @jeff7457! Welcome! Good Luck- but it doesn't seem like you really need it :D

#5  

Thank you Chelsea for the vote of confidence. The easy part is done. I am waiting on the EZ-B to arrive to start the real work. I've also ordered a Hasbro R2D2 and want to get that converted to a working robot. Big star wars fan. :)

#6  

Lots of Star Wars fans here!;) Any special plans with the T-Hex?

PRO
USA
#7  

I really like that T-Hex frame. I made one similar of wood a few years back before I knew about the EZB controller. Makes me want to revisit it but this time with the HDD servos and the EZB Controller. User-inserted image

#8  

Wow @rz90208 that is really cool! I am very taken with the idea of using organic materials - were there any unexpected challenges besides the weight?

#9  

Chelsea Right now I just want to get it up and running. Learn about the EZ-B controller and make it walk smoothly. Then I would like to add a joystick so I could allow others to control it without handing them my phone or tablet.

rz90208 Looks nice. Sounds like a good plan. Look forward to seeing it.

PRO
USA
#10  

Using cheap servos and an old NiCad battery from my RC racing days and powering the servos and the Arduino from the same battery. It would work for a while and then would curl up like a spider sprayed with poison. But once I used separate power for the Arduino it worked nice. but did not have much for control. forward back rotate left and rotate right and that was a wired controller. But now if I would redo it with the HDD servos and the EZB, and a few sensors, I could take over the world!

#11  

Making a little progress. Working on the gates now.
User-inserted image

#12  

R2D2 has given up some old parts. Lol User-inserted image

United Kingdom
#13  

@jeff7457

Looking good, have fun creating the Gaits. It took me quite a lots of hours using Auto Position to do this, a lot of fine tuning to get the legs in sync. The fastest gait is the tripod’ gait, but I do like the other two the ripple’ and wave’ gaits.

Looking forwards in seeing the video.

PRO
Synthiam
#14  

Ah poor R2. We can rebuild him faster stronger!

The Auto Position control has quite a bit of documentation to get you started. Check it out here: https://synthiam.com/Tutorials/Help.aspx?id=180

#15  

Lol. R2 is getting a new brain. User-inserted image