Johan Link

Same problem for me.

Yes it's correct.

Hi,Here is an explanation drawing(it misses the screw on the drawing)

Bonjour,Merci pour le commentaire.Voila les versions des librairies que j'utilise:Python : 3.6.4Numpy : 1.14.5OpenCV : 3.3.0Tkinter : 8.5PIL : 5.1.0imutils : 0.4.6serial : 3.4 N'hésite pas à m'envoyer une photo du projet, ça m'intéresse :)

Hi, Thank you very much for the picture.I may know where your problems come from.- Is there 18cm between the end of each arm. (see picture)- If you press the "Ranger les bras" button, all arms should be lowered as much as possible. (see picture)

Hi,You have to right click with the mouse on the ball so that the program detects the color of the ball. Did you do this right click? I hope it helpsFeel free to send me a picture of the project, I'm interested :)

Hi,Thanks for the comment. I just added two .step files in step 2. I hope it will work.Good luck for the construction of this project. :)

Hi,The program "solveEquation.py" generates the file "data.txt". You can find it here: https://github.com/JohanLink/Ball-Balancing-PID-System/tree/master/additional%20codes

Hi,At the beginning you have to put each coefficients (pid) to 0. Then you can slightly increase the coefficient p. At this point you have to put the ball in different places on the board and check if the board tilts in the right direction (no need to throw the ball, you can just hold it on top of the board). If the board moves in the right directions, you can increase the coefficient d. Then you have to do some tests by varying the value of p and d. Once this works you can increase the value of the coefficient i which is very sensitive. (the coefficient i is not necessary. You can set it at 0).I hope it helps!Do not hesitate to send me a picture of your construction. I'm interested :)

Yes!

Hi,If you want to have exactly the same pcb as me you can buy it here: https://www.pcbway.com/project/shareproject/Ball_B...Do not forget that you will receive a pcb without the components. You will have to buy and solder all components. If you want, you can do my project using just an arduino uno.

Hello,The part below the print3times.stl part is just an error on the drawing. Here are two images that should help you. The print3times.stl part and the magnet are glued to the bottom of the tray.

Hi, Thanks for the comment. I realized that the text on the pcb contains false information about the name of the servo pin. Here is an image that explains on which pin each servo must be connected.

Thank you for this modifications that will help many people !

Hello,Which libraries you can't install? What error messages you have when you run the program? Maybe I can help you.

Hello,I think the problem is the opencv version. Personally I have python 3.6.4 and I use version 3.3.0 of opencv. Try to use the same versions as me. I hope it helps :)

Bonjour, vous pouvez mettre le pdf sur dl.free.fr puis m'envoyer le lien de téléchargement, merci.

Merci beaucoup pour les liens. Je suis heureux de voir que mon travail puisse vous aider à compléter vos cours. Vos schémas m'ont l'air parfaitement corrects et correspondent bien à mon système.

Thank you!

You are right there are plenty of pieces that are not necessary. I made these pieces because I wanted to create a well finished and beautiful object. I used a camera because I wanted to learn how to use OpenCV.

You're right, I forgot them !! I will add the files. Thanks

I bought my servos here : https://www.brack.ch/fr/futaba-servo-s3003-analogi...Don't buy Chinese copies of this servo model.

Yes it's exactly the right servo.

Thank you for this useful information! This camera would have been perfect for this project. I’ll use it for future projects. Thanks!

Yes, you can replace my PCB with a Arduino Uno.

You can download this (https://www.python.org/downloads/) to run my code.And you have to install all the libraries:import cv2import numpy as npimport timeimport imutilsimport tkinter as tkimport tkinter.messageboxfrom PIL import Image, ImageTkimport serialimport serial.tools.list_portsfrom math import *

Thank you so much for your comment. You are absolutely right, I didn't put much detail in the Instructable but I will try to add more explanations in the coming days. Unfortunately, the code I wrote is not very understandable because there is a mix of English and French... The mouse can do only one thing:With the Python program you can see live video of the webcam. Before starting the system you have to put the ball in front of the camera and on the computer you have to right click on the ball to indicate to the computer the color of the ball. (image in Step 5)

I never tried running the Python program on a Raspberry, but I'm sure it can work.

Thank you so much!

Merci !

Thank you!

Thank you. One day, I saw a video with a similar system. So I wanted to create my own machine :)

Thank you for your comment. I didn't use any formulas to determine the size of the shapes, I just did several tests with different sizes.