Robot TANK - Two H-Bridge IBT2 + PS3 Controller.

Other Hardware Motors, Mechanics, Power and CNC
1

Hello friends, I'm using Google Translate!
Maybe the translation is not very good.

I am needing help developing code to control 2 DC Motors + 2 Bridge-H IBT2 + PS3 Joystick.
My Robo is TANK type

The problem is that I want to control both using only 1 Analog Stick (Left), then using the X and Y Axis.

The Right Stick will remain to control the paintball gun.

The problem is that as I push the joystick forward (Y-axis) the two motors go forward!
BUT if I push forward and to the right (Y axis + X axis) the right motor needs to slow down, and the left one to increase! So that it turns to the right.

H-Bridge Link (1 for each Motor) = Http://www.hessmer.org/blog/wp-content/uploads/2015/06/IBT-2-Input-Ports.jpg

If someone can help me with the code, thank you very much!

IBT-2-Input-Ports.jpg
IBT-2-Input-Ports.jpg662×575 96.7 KB

2

HELP!

3

You can get som ideas from this project.

4

pagoto:
The problem is that I want to control both using only 1 Analog Stick (Left), then using the X and Y Axis.

The problem is that as I push the joystick forward (Y-axis) the two motors go forward!
BUT if I push forward and to the right (Y axis + X axis) the right motor needs to slow down, and the left one to increase! So that it turns to the right.

Conceptually this is simple, you need to linearly combine the X and Y values appropriately like:

  int X = read_joystick_X () - X_centre_value;
  int Y = read_joystick_Y () - Y_centre_value;
  int left_drive = Y+X ;
  int right_drive = Y-X ;

Note all values are signed, which you'll have to take account of when converting to outputs for a motor driver.