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11
Mechanics and Construction / robotic toy
« Last post by mklrobo on August 14, 2021, 12:03:52 PM »
 8)  excelsior!!   8)

     Hello robot superheros!!

     In my plight for using stepper motors for "relative" precision required for my robot,
I have decided to try to use the Easy Driver stepper motor driver. With just a few pins from
the raspberry pi, you will be able to control 2 stepper motors with enough accuracy to
use the robot effectively. ;)
    I wanted to use the adafruit stepper motor hat, BUT, you have to download the library
and use their code; not bad, but will stray away from true python programming. I would like
to keep the programming language as pure as possible, without getting entangled with other
languages that might not even be in existence in 3 years, not to mention the stepper hat might
not even be available.  >:(
    I would like to keep this robot working for the long term, in which more applications can be
intuitively installed without involving a convoluted mess of languages, which only serve to
kill the learning curve and progress of the robot.  :'(
   You will always have the option to use other languages as add ons to your own apps, but the
basic cores (I think) should be a pure building block that can serve the future as well as
retro apps.  :-*
   I have attached the picture of the servo controller, in which I have heard good things about.
I am going back to the drawing board to accommodate these drivers, which will involve some
soldering skills, BUT, will be worth in the future, for simplicity of diagnostic and control.   ;D

  ;D see you same robot time, same robot channel!   ;D
   
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Mechanics and Construction / New Humanoid Robot Project!
« Last post by Diorthotis on August 14, 2021, 10:06:00 AM »
Hello, I have started a full scale humanoid robot project. Check out the progress, I am currently finishing a leg to begin working on the sensors and electronics. I will be using brushless DC motors, MPU6050 and ultrasonic sonar sensors. I am printing the parts on an Ender 3.


https://www.youtube.com/naeyoGTbT9c
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Mechanics and Construction / Robot toy
« Last post by mklrobo on July 28, 2021, 05:57:12 AM »
 :) excelsior!!   :)

   Hello, True Believers!  8)

   In my preparations to make this project as simple as possible, I
have found a company that sells the raspberry pi, the LCD screen, camera, AND freeware already installed!!!  ;D

     All you have to do, is build the mechanical, load my control program, and VOLIA! instant robot toy!!!   :D

     I had to do it this way, to simplify the programming issues that (believe me) would frustrate anyone. Loading
and compiling some of the freeware can be a task, and could take away from enjoying the robot.  :'(

     Although, slugging through these issues is what robotic  8) superheros do; but, that is one less thing you will
need to do.

     I am working with the company to make sure it works properly; if so, this will simplify the project greatly, and
reduce the cost of the project by approx $50 - $100 dollars!!!   ;D

 Thank you for reading this post!!  8) see you next  post, same robot channel, same robot time!!!!   8)
14
Mechanics and Construction / Re: New robotic toy coming out!
« Last post by mklrobo on July 21, 2021, 07:55:22 AM »
 8) excelsior!   8)

I would like to recommend a book that will help you with my new robotic toy!

 "Beginning Robotics with Raspberry pi and Ardunio"

This book gives a quick reference to all the main points that will make your
life easier with robotics, especially with my toy!!

 ;D see you same robotic channel, same robotic time!!!!  ;D
15
Electronics / Re: New Humanoid robot project update - cloning Atlas
« Last post by mklrobo on July 18, 2021, 02:48:04 PM »
 8) excelsior!   8)

  I see you added another video on to your original one - about using global variables exclusively.
When I am making small programs, making all variables global can be a great help. But, when my
program starts getting large, I find I must enclose local variables to functions, to keep from overwriting
other information on other variables. I used them so much, I have a variable overload, which wrote into a memory block in which it was not supposed to; and crashed my computer.
   Having learned that lesson, I got an experience of why functions are important, besides being cool.  8)

    So, there you have it!!

    If you want really powerful code, with very little statements, try FORTH. It is challenging, and not many programmers use it today. It is used in all the cool space stuff, so have a look at it!!

 :)  good luck   :)
16
Electronics / Re: New Humanoid robot project update - cloning Atlas
« Last post by mklrobo on July 15, 2021, 07:53:37 AM »
 8)  excelsior!!!   8)

   Interesting video, very nice. Gyroscopes are important to the robot walking, no doubt.
I would venture a suggestion about looking into other raspberry pi products that already
use a gyroscopic module, but without the actual physical structure.

    Keep up the good videos!!!   ;D
17
Electronics / New Humanoid robot project update - cloning Atlas
« Last post by Diorthotis on July 13, 2021, 09:37:56 AM »
Greetings, I have been working a lot on my new robot project. Today I discuss the electronics. I will be using a lot of MPU6050 gyroscopes. I discuss a scheme to control up to x16 MPU6050 modules with a single Arduino.

https://www.youtube.com/watch?v=njzNClFSzSI
18
Electronics / Re: 12v dc motor off and on continuously
« Last post by Diorthotis on July 13, 2021, 09:28:26 AM »
You need a sufficiently large capacitor across the power rails. It will provide a boost of power when the motor starts. You also need a back-emf schottky diode also across the power rails, but in reverse polarity.
19
Mechanics and Construction / Re: Robot Construction Log
« Last post by mklrobo on July 12, 2021, 08:12:07 AM »
 8)  Excelsior!!   8)

     Hello again!

     In reference to your high level language, may I humbly suggest Python?
Reason being, Python is "bound" to about every language there is, and
a language that you use on you robot would set the stage for other
people to access and build a robot like yours in a friendly, familiar
platform.
    This would allow you to access other resources as your robot project grows!   ;)

 :)  Good luck!    :)
20
Mechanics and Construction / Re: Robot Construction Log
« Last post by FIFO on July 10, 2021, 12:18:53 PM »
Thank you! I took a lot of time to make things really clear. Now I'm trying to figure out what to make next. I was considering trying to develop a high level language and compiler so that it would be easier to program the robot. I don't know very much about that, but it seems like it would be fun.
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