Question about the SEQ tutorial for the SCOUT

Lynxmotion Legged Robots
1

Okay, I am trying to follow the tutorial here: lynxmotion.com/images/html/build109.htm

It’s a supplement for the BRAT tutorial here: lynxmotion.com/images/html/build106.htm

You’ll note, in the BRAT tutorial, it shows you how to calibrate the servos. This one at 90, that one at 45, etc, and it also shows you what the correct min/max travel should be for a servo.

For the SCOUT version… nothing. You get a screenshot showing some sliders and a comment about how your values will be “different, but should be similar.”

Unfortunately I don’t seem to be having much luck guessing at values. I set one leg as close as I could, then set the other leg to match, and when I try to use the walk gait, the bot crouches down really low and falls over. What I’d like to know is what am I actually shooting for when I set each servo? Most of them seem self explanatory, 90 degrees for the ankle roll, hip rotation, but the up/down and knee servos? I have no idea.

Any help, from anyone, would be appreciated.

2

The BRAT has a detailed tutorial because it is a kit we sell as a plug and play type of kit. The Scout is not sold as a fully functional kit. It’s sold as a DIY starting point. All of the documentation on the website reflects this. The BRAT stuff is more popular so we took the time to document the process. We did have code for it, but it was lost when a laptop died.