Thanks guys. I really like this version.
You decided to extend the arms then, keeping the cg the same but extending your reach...that works, I'l be curious to see how it fares against the other roboone robots.
I'm curious too. He's got a decent range. His pivoting torso extends his forward reach considerably... we'll se if it's enough
I am curious why you have the heat sinks?Are you running at about 6v? and if so what are you running at?
Heat is my enemy. I was running straight 7.4v (unregulated around 8.3v full).
I knew better, but got greedy for the extra speed and torque it produced. Worked great with the voltage just below 8v. The microcontroller... no problem. The servos on the other hand would get pretty hot, thus the heat sinks. I cycled through my batteries (that have been dormant for a month +) w/o any problems. I tossed on a fresh, fully charged pack and turned him on. Whether it was coincidence or the cause, I flipped the switch to my camera (I removed its in-route regulator and powered off 5v from the 3024 ...probably not the wisest move there either) a moment later plums of bitter-sweet smoke hit my nose. I don't know, maybe the H-Bridges just had enough of the over-volting, or the camera's transmitter consumed so much on power-up that it dropped the voltage and bumped the amps. Whatever the case, it didn't work. I lost three servos. On a good note, none of the servos equipped with heat sinks fried...
All servos replaced. The camera is back to having its own power source and the Li-Poly's are regulated at about 6.7v (still pushing it some). No, still not using a DC/DC converter, but will surely do so upon my return. Oh, and it was definitely the H-bridge that cooked... I know there was another debate about the motors themselves failing.
Have you found that the additional height in the feet due to these batteries makes a big difference, or is it similar to the stock?
Well, with Rook's Pawn's first moon boots he was sporting, the servo axis was so far from the foot sole... I don't think it produced any major problems... maybe a little. The batteries did lower his COG enough to notice. The extra weight at the base helped.
He's now got one Li-Poly cell in each foot instead of the two cell pack/foot. They're wired in series up in his torso. I rigged up a special charging harness w/ balancing leads so I can charge and equalize them together as one pack.
What's his weight 'n height?
He's about 2.1kgs and somewhere around 38cm if I remember correctly...
Matt, this is a Robonova forum. Your post is off-topic
Yeah, I was torn between posting it here as an RN or in the Home Built section... I figured he falls under both
Would love to see a vid clip of all that free movement
I would love to, but I still haven't got my camera sent back to me from RoboGames.
Can't really blame anyone but myself... I was the one that left it there. All intentions of it being returned are good; it's just that a busy life is a busy life.
post more pics and vids, pls.
I'll post some more pics whenever I get the chance.