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Electronics / Use closed loop stepper motors instead of open loop stepper motors
« Last post by ben25 on April 07, 2024, 02:17:07 AM »
Hello everyone,
My 3D printer has a slow printing speed. Once the speed is increased, the motor will easily lose synchronization, and the accuracy and success rate will drop significantly. If I want to solve these problems, can I use a closed loop stepper motor instead of an open loop stepper motor? A motor similar to this: https://www.oyostepper.de/goods-533-Nema-17-Closed-Loop-Schrittmotor-09-Grad-44-Ncm-mit-Encoder-1000CPR-Schrittmotoren-mit-Geschlossenem-Regelkreis.html
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Misc / Re: Articulated Robot Question
« Last post by grindiffer on March 06, 2024, 08:15:11 PM »
Quote from: meilingerwooddesign on January 06, 2022, 05:46:46 PM
Does a cylindrical robot with 2 vertical rotary joints (one on base, one on arm) make it articulated?
If so, when I remove one rotary joint (base or arm), does that make it non articulated?
Thanks
At the present time, this is completely possible. I believe that in the future robots will become even more flexible.
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Mechanics and Construction / Re: Trumpet Playing Robot... how does it work?
« Last post by piesobese on February 11, 2024, 03:15:47 AM »
Quote from: T0110100101101101K on January 07, 2010, 11:17:45 PM
All they have to do is vibrate the air entering the trumpet at the frequency they want to influence the pitch.  Lips do this for humans, but my guess is that they used some sort of flapper inside the mouth of the robot.

Here is a better view of a couple Aerophone playing robots.  Toyota's Robot Quartet Band.  You can see there is nothing protruding from the mouth, and the orifice is smooth.
I was truly enlightened with this new perspective.
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Misc / American Robots 1978 robot build plans $200 reward
« Last post by crmfghtr on January 30, 2024, 10:57:24 AM »
I had these plans from American Robots in 1979 that would still hold up today!  I lost them.  They were for a 5 foot robot that resembled Robby The Robot, with working claws motors etc.  I lost them when I moved once and have been hunting for them ever since.  Going to be hard to recover something that old but here is hoping!
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Electronics / B-Robot EVO 2 Circuit Board Replacement
« Last post by shdo1937 on January 18, 2024, 09:40:22 AM »
Hello, I am working on constructing the B-Robot EVO 2, however, I can not find the control board they list:

https://jjrobots.com/product/devia-robo ... oard-v1-0/

I need a control board with the same capabilities to replace this one and move forward. Does anyone have any suggestions? Anything will help because I am new to this, thank you!
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Misc / Re: Hello from Brisbane Australia looking to connect with locals
« Last post by faxprayer on January 18, 2024, 04:00:44 AM »
It's great that localities have so many competitions. I hope my product will be launched at a local exhibition soon.
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For Sale / Tracked lawn mower robot with engine and 12v 250w track motors
« Last post by Saso on December 18, 2023, 04:42:39 AM »
For sale
Tracked robot lawn mower remote control

12 v 250w motors
200ccm 6 hp engine
Electric start
40amp battery
45amp generator

https://youtu.be/zv21078iIw4
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Robot Videos / Tracked robot with engine and 12v 250w tracks motors
« Last post by Saso on December 14, 2023, 06:52:40 AM »
Hej
Here is video of tracked robot
Aprox 90cm long, 100cm wide
Huge pulling power
3,5km/h speed

https://youtu.be/YxzEJLNGbfg?si=t1Ucj0dRnVzyrqaV

With headlight
https://youtu.be/bkoVwxcySC4?si=8KEQmbZMPL1HvyL8

Cutting big grass
https://youtu.be/zv21078iIw4


Thanks

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For Sale / Tracks 900mm long, weigjt 25kg each, motors 12v 250w
« Last post by Saso on December 14, 2023, 06:38:49 AM »
Hej For sale tracks complete with motors
900mm long
Weight 25kg each
Motors 12v 250w
Speed 3,5km/h
Huge pulling power

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Mechanics and Construction / Re: Trumpet Playing Robot... how does it work?
« Last post by Filip on November 21, 2023, 05:31:47 PM »
Can you text to me I want to go down to the rabbit hole like you said :)


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