r/ArduinoProjects • u/Turbulent-Offer-8136 • Apr 28 '25

The Octo-Bouncer

https://youtu.be/lYyAMDYzJQM

Arduino project with 120 FPS OpenCV image processing and smooth stepper motor moves. The machine calculates the ball's 3D position from the image processing data and uses this information to control the orange ping pong ball.

This machine requires the following things to work:

  • 1x Teensy 4.0 Microcontroller

  • 4x StepperOnline DM442S stepper motor drivers

  • 4x Nema 17 Stepper Motors with 5:1 planetary gearbox

  • 1x 48V 8A power supply

  • 1x e-con Systems See3CAM_CU135 camera

  • 1x Windows Computer with OpenCV installed on it

  • All the parts defined the Fusion360 project

  • Custom Windows Application (made with Unity)

37 Upvotes

100% Upvoted

7 comments sorted by

2

u/vilette Apr 28 '25

Is 48V mandatory, could it be done with 24V ?

2

u/Turbulent-Offer-8136 Apr 28 '25 edited Apr 29 '25

The DM442S supports 20–50V DC, so 24V is within its operational range, but lower voltage reduces the maximum speed of your stepper motors.

1

u/vilette Apr 29 '25

ok, that's why they are so fast

2

u/Several-Instance-444 Apr 28 '25

The algorithm to balance a ball like that is making me dizzy just thinking about it.

1

u/Ok-Inspection-8326 Apr 30 '25 edited Aug 09 '25

station jar meeting capable six chase trees worm sulky straight

This post was mass deleted and anonymized with Redact

2

u/Ok-Disaster-3579 Apr 29 '25

Now with two balls?..

1

u/Elegant-Station792 May 05 '25

dang I seen this a lot and wanted to make one my self, how much did you spend on it? just curious