Autonomous tennis ball retrieval robots

A device comprising:

• a housing;
• a first wheel coupled to the housing;
• a ball collection portion configured to receive a plurality of balls;
• a net removably coupled to the ball collection portion;
• a first arm removably coupled to the housing;
• a second arm removably coupled to the housing, wherein the first arm and the second arm together guide balls towards a ball inlet disposed on the housing;
• a ball direction device configured to direct balls from the ball inlet to the ball collection portion;
• and
• a first sensor, wherein the device is configured to detect obstacles using the first sensor;
• wherein the device is configured to retrieve balls and is configured to be transported in a rolling mode using the first wheel.

A tennis ball collection device comprising:

• a housing comprising a ball inlet;
• a first wheel coupled to the housing;
• a ball collection portion coupled to the housing and configured to receive a plurality of balls;
• a first arm removably coupled to the housing;
• a second arm removably coupled to the housing, wherein the first arm and the second arm together guide balls towards the ball inlet;
• a ball direction device configured to direct balls from the ball inlet to the ball collection portion;
• a first sensor coupled to the first arm, wherein the autonomous tennis ball retrieval robot is configured to detect obstacles using the first sensor;
• and
• a controller configured to:
• cause the roller to move in a first direction;
• detect a ball jam in the ball direction device;
• cause the roller to move in a second direction;
• determine that the ball jam is cleared;
• and
• cause the roller to move in the first direction;
• wherein the tennis ball collection device is configured to retrieve balls disposed in an ambient environment, and is configured to be transported in a rolling mode using the first wheel when the first arm and the second arm are removed from the housing.