Reliability of Pixy Camera?

[electroken]

Originally Posted by Gdeaver

To teams that got the Pixy to work. Where did you shoot from? Did you shoot from the defenses? Did you have to be centered and perpendicular to the target? What did you do about getting 2 targets when positioned to the side and 2 targets were in view?

We shot from anywhere along the outer works and from along the left edge of the field (as viewed from our driver station). Our preferred and most practiced spot was halfway between the low bar and the wall along the left side.

The 2 target problem turned out to be no problem at all. Using the digital/analog X interface the Pixy gave the X position for only the largest target it saw. In every case that target was the goal most perpendicular to our catapult, and therefore the goal we wanted to be aiming at.

For clarification, we used the two signals from the Pixy as follows:
The digital output told the robot when the Pixy saw what we taught it to look for anywhere within its visual field. At that point the robot removed the yaw authority from our driver and aimed itself. A large indicator on the driver station told our operator when the robot was aligned and ready to shoot. At that same time full drive authority was returned to our driver, just in case we needed to relocate due to being defended.