Botboarduino and Sabertooth 2 x 25

Lynxmotion Rovers, Sumo, and Tracked
1

We currently have a A6WD rover with the 6 wheels and motors and the sabertooth 2x25. I connected all the left motors to the M1A AND M1B ports and connected all the right motors to M2A AND M2B ports. When we talked to RobotShop they told us that the easiest way to control it is through a PS2 controller.

How do we connect the botboarduino (which is connected to the PS2 receiver) to the sabertooth 2x25? What would be the configuration for the Sabertooth 2x25 DIP switches?

Also, do you have a sample code for the BotBoarduino and the PS2 Controller receiver?

2

That’s correct. Ensure that the motors all rotate in the same direction, and if one of them is reserved, simply change the wires for that motor.

If you are using a BotBoarduino, then yes, a PS2 controller is one of the ways to control it remotely by hand. If you wanted it to be controlled from a computer, there are other ways.
If you just want normal R/C (without the need for a microcontroller at all), then you just need a normal R/C controller.

The Sabertooth 2x25 is quite versatile when it comes to receiving commands, but in order to use the sample code, you need to use R/C mode. The following wires will help greatly with connections:
robotshop.com/en/lynxmotion- … le-12.html

Use the code / procedures for the A4WD since the end effect is the same (step 3 onwards):
lynxmotion.com/images/html/A4WD1U-guide.html

3

So i followed the steps to remove the middle red wire and connect the connector wires to 3 and 4 on the botboarduino (black side facing out) but now I have an issue with the Sabertooth 2x25. On the Sabertooth 2x10 it has the CH1 AND CH2 inputs while the Sabertooth 2x25 has the 0, 5, S1, S2 inputs.

Diagram for Sabertooth 2x25:
robotshop.com/media/files/Im … detail.jpg

So how would I connect the 2 sets of black and yellow wires to the 0v, 5v, s1, s2 inputs on the Sabertooth 2x25

4

Assuming you have two 3-pin RC servo cables, each with yellow (signal) wire, red (5V) and black (GND / 0V) wires;

]Signal wire from the first cable to S1/:m]
]Signal wire from the second cable to S2/:m]
]Both black cables inserted into 0V screw terminal/:m]
]Both red cables inserted into 5V screw terminal/:m]

5

Do I still keep the red wires disconnected?

6

The red wires from the Sabertooth provide 5V, which is needed for normal R/C controllers, and is similar to a “battery elimination circuit” (BEC).
The BotBoarduino has its own power and as such does not need the Sabertooth to power it. Therefore yes, you should leave the red wires not connected, just as in the guide.

7

I have followed all of the instructions and the directions you gave above and it is still not working. For this setup, how would the dip switches be configured (I think that may be the issue)?

8

To confirm, you have the PS2 V3 connected to the BotBoarduino?
The BotBoarduino is connected to the Sabertooth controller
The Sabertooth controller is connected to the main battery and the motors.

You’ll need to provide some clear images showing the connections.
As for the DIP switches, it’s based on the manual, but you need to have it set to RC control.