The NTB version of the Delta has a target tool point (TCP) with a motor and a magnet. The magnet can be operated as follows (run as root):

root@beaglebone:$ cd /sys/class/leds
root@beaglebone:$ echo 1 > red/brightness

The TCP motor should turn clockwise with the command

debian@beaglebone:$ rc_test_motors -m 4 -d 1