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Gael Langevin posted a new activity comment 4 years, 3 months ago
@juerg, this part is not motorised yet
@smattachai-p, You need to adjust the level of the top bolts on the threaded rods that are within the legs, if the torso leans a little backward, it’s okay. This will counterbalance, when the robot extends it’s arms forward.
Thanks for the video! you did a great job with the Myo armband.
About 5 years ago (2014), just after the Myo came out, I did some research along with Alessandro (Italian friend) to get the InMoov2 hand responding to the armband to be used for prosthetic purpose.
At the time it was very difficult to find…[Read more]
Hy Gael. well it’s hard for me to judge how much it did evolve or how easy it is. one day i stumbled over this website; http://www.fernandocosentino.net/pyoconnect/ where i found a linux alternative to the myo software myoconnect. this software could be used on a raspberry pi to collect the myos data and do something with it. all i could do with…[Read more]
Very interesting how we all get to find solutions.
Both study competences are required in robotics, but it mainly depends in what kind of company you will work later.
Some robotics company will hire a specialized electrical engineer, while another company might need an engineer that has more self discovering solutions which wouldn’t need to be…[Read more]
Marten de Groot posted a new activity comment 7 years ago
Please read this post from @juerg
An error in a script and an unreachable neck position – just burned another HS805BB so badly, it burned a hole into the case and I can still smell the odor of death when entering the house.I have added now readjustable fuses for all of my large servos (PFRA 160, Reichelt.de).Hope this prevents future smoke!- juerg (@juerg) July 24, 2016
Give it a try and see if this will solve your problem.
Which servo’s are you using in combination together, which gives you this “Jitter” problem ?
Do you have a oscilloscope ?
If yes, could you make and share some screenshots, when you…[Read more]
Gael Langevin posted a new activity comment 7 years, 6 months ago
@Juerg, I’m guessing Amby sees it for the torso and stomach displacements.
The two armonics drive must be for the shoulders. Though when you know how much an armonic drive cost, you back off a little. 🙂
@Amby, yes, it is on that U-joint principle that I had designed the stomach rotations.
Gael Langevin posted a new activity comment 8 years ago
@juerg, the servos won’t break parts, at least it never did on any of the hands I have assembled. In MyRobotLab you set the Min and Max for each servo, this avoids the servos to force further than necessary.
The pulleys mounted on the HK15298, even though it rotates only 90 degrees, can actuate fully all fingers, only the Majeure finger is…[Read more]
Thanks for posting the spring design. I think springs has to be part of the solution, since turning the wrist will pull on both sides of the servos. A different design of the pulleys may decrease the length that the springs need to flex.
Springs will the best/easiest way to solve the problem.
I will use this Pully, including a spring to let the finger go down again.
I haven’t springs at home to test, so here some different views from my drawings and a mounted pully at a servo:
This Pully size is fine for the Index finger, when the servo makes a…[Read more]