The brush events shall be stored in a queue on the hardware device. Commands sent to the device are all human readable ASCII commands. All commands shall be carriage return (\r) terminated. If a command is not understood by the device, no response will come. All responses to valid commands are in binary unless otherwise specified.
example: NUM_QUEUE Description: This command reads the number of brush events still on the device Response: Single Byte containing number of events stored (up to 255)