RoboSavvy Forum

Simple 18 DOF robonova

2008-05-18T16:28:47+01:00

I have a lot of work sor i don't have enough time to play with my robot. Walking using the hips is quite difficult to get working, robobasic is not very precise and i have trouble to keep the robot balanced.

Statistics: Posted by Voelker — Sun May 18, 2008 4:28 pm

Simple 18 DOF robonova

2008-05-18T11:44:56+01:00

Voelker wrote:
Thanks for the full-bar indicator mod, it works well and looks better.

Not a problem. I'm interested to know how the 18DOF is working out. Have getting up or walking yet?

Thanks.

Statistics: Posted by tum — Sun May 18, 2008 11:44 am

Simple 18 DOF robonova

2008-05-17T22:56:40+01:00

Thanks for the full-bar indicator mod, it works well and looks better.

Statistics: Posted by Voelker — Sat May 17, 2008 10:56 pm

Simple 18 DOF robonova

2008-05-17T14:02:04+01:00

No problem with the regulator sor far. The robot is more stable as there is no voltage drop when there is Amp peaks. The voltage is also more stable along time not like with the stock battery. The regulator is little too heavy (big heatsink) but it doesn' affect the performance has the battery is lighter, just someminor changes to the balance.

Statistics: Posted by Voelker — Sat May 17, 2008 2:02 pm

Simple 18 DOF robonova

2008-05-15T23:47:38+01:00

Voelker wrote:
I have finally replaced the stock battery with a lipo + regulator. The regulator i've found can provide up to 8 amps, and you can connect tow batteries to it. This regulator is a bit big as i has a big blue heatsink, but it can fit on robot chest. I also added a voltage monito on the chest to watch the battery level.

the regulator:
http://www.verticalhobby.com/kauppa/product_info.php?cPath=21&products_id=415&language=en

I finally found the indicator you used. I've posted instructions on my blog on how to change the indicator from a dot-dot indicator into a full bar indicator.

http://www.abstractpath.com/weblog/2008 ... -show.html

BTW, how do you find the regulator? Is 8A enough to power the robot through high current moves like getting up or walking?

Thanks

Statistics: Posted by tum — Thu May 15, 2008 11:47 pm

Simple 18 DOF robonova

2008-04-09T17:25:39+01:00

Voelker wrote:
I have finally replaced the stock battery with a lipo + regulator. The regulator i've found can provide up to 8 amps, and you can connect tow batteries to it. This regulator is a bit big as i has a big blue heatsink, but it can fit on robot chest. I also added a voltage monito on the chest to watch the battery level.

the regulator:
http://www.verticalhobby.com/kauppa/product_info.php?cPath=21&products_id=415&language=en

Where did you get the meter from? I've been looking for a small prebuilt tidy looking one like your one

Statistics: Posted by tum — Wed Apr 09, 2008 5:25 pm

Simple 18 DOF robonova

2008-03-18T19:36:55+01:00

The main difference is the torque, but this servo also has the advantage to have metal gears. This servo mounting wouldn't have been possible without this servo as the stock servo has a plastic horn which would have been too weak.

Statistics: Posted by Voelker — Tue Mar 18, 2008 7:36 pm

Simple 18 DOF robonova

2008-03-18T18:43:01+01:00

Hi,

What's the difference between the HSR5498SG servo and the stock robonova servo?

Statistics: Posted by tum — Tue Mar 18, 2008 6:43 pm

Simple 18 DOF robonova

2008-02-13T10:04:40+01:00

Very good job! The video clearly shows new motion capabilities.

humanoido

Statistics: Posted by Humanoido — Wed Feb 13, 2008 10:04 am

Simple 18 DOF robonova

2008-02-10T13:46:46+01:00

The regulator is doing very well, in fact it is far better than the stock battery as it maintain a constant 6v power input, so servos as the same torque and same speed all along the run. I have craeted my first 18DOF motion today. I had many difficulties creating this move as it implies balance change.
watch the video below:

http://robosavvy.com/Builders/Voelker/turn-around.avi

Statistics: Posted by Voelker — Sun Feb 10, 2008 1:46 pm

Simple 18 DOF robonova

2008-02-07T17:35:55+01:00

This is great!

Are you able to shoot a short Video of your creation abulating about with its new DOF?

Any problems with your LiPo/Regulator so far?

Are you able to use the low current blink with the 'bot too?

Statistics: Posted by MYKL — Thu Feb 07, 2008 5:35 pm

Simple 18 DOF robonova

2008-01-30T17:03:10+01:00

"I also added a voltage monito on the chest to watch the battery level."

Statistics: Posted by NVR2FST — Wed Jan 30, 2008 5:03 pm

Simple 18 DOF robonova

2008-01-30T16:50:18+01:00

I have finally replaced the stock battery with a lipo + regulator. The regulator i've found can provide up to 8 amps, and you can connect tow batteries to it. This regulator is a bit big as i has a big blue heatsink, but it can fit on robot chest. I also added a voltage monito on the chest to watch the battery level.

the regulator:
http://www.verticalhobby.com/kauppa/product_info.php?cPath=21&products_id=415&language=en

Statistics: Posted by Voelker — Wed Jan 30, 2008 4:50 pm

Simple 18 DOF robonova

2008-01-19T19:51:40+01:00

Thanks for the extra pics you say:

I am soon gonna replace the stock battery with lipo

What regulator do you intend to use?

PS
Keep up the good work

Statistics: Posted by NovaOne — Sat Jan 19, 2008 7:51 pm

Simple 18 DOF robonova

2008-01-19T18:05:40+01:00

The HSR-5498SG seems to be perfect for hips rotation but i think that they also would be perfect replacing the other legs servo as they are more accurate. Today i have worked on the servo setting, and i modified the hardware setting by modifying the bracket position on the servo horn. My robonova is now more stable but the basic servo seems to be a little weak to handle the extras weight and height. I am soon gonna replace the stock battery with lipo to try to decrease the weight, and when i ll have a little more money, i'll replace the basic ankle and knee servo with HSR-5498SG.

Statistics: Posted by Voelker — Sat Jan 19, 2008 6:05 pm