Dancer Board is a low-cost, infrared-based, beacon-and-sensor
system that allows a robot to sense the distance between
itself and a nearby robot, as well as the nearby robot’s
relative bearing. It is used
in Teaching a Robot How to Dance.
When operated as an omnidirectional beacon, Dancer Board turns
on its four infrared (IR) emitters—aimed to the left, to the
right, forward, and backward—to transmit a signal in all
When operated as a sensor, Dancer Board “listens” on four IR
receivers, also aimed to the left, to the right, forward, and
backward. Each receiver is most sensitive to IR that arrives head
on (on axis); it has less sensitivity to IR light that arrives at an
angle (off axis). Therefore, based on the strengths of the four
received signals, one Dancer Board can determine its orientation
to and distance from another board operating as a beacon.
The first version of Dancer Board, otherwise known as the IR
Sensor/Beacon printed circuit board (PCB), is 4" x 4".
Click on any of the thumbnails below to see close-up views, and
us to learn more.