Page 228 - Robots Androids and Animatrons : 12 Incredible Projects You Can Build
P. 228

position, or the video camera can be mounted on top of a servo
                                       motor  for  camera  movement  and  tracking.  The  servo  motor
                                       mounting is naturally more complex and requires the building of a
                                       separate R/C control for panning the camera left and right. In a high-
                                       fidelity  system,  the  camera  panning  would  be  linked  to  a  head-
                                       tracking unit. So if the operator turned his or her head left or right,
                                       the camera on the mobile robot would also pan left or right in sync
                                       with the operator’s head. To make this work properly, the operator
                                       should be wearing a VR-style head-mounted display (HMD). This is
                                       a lot of work. I advise using a fixed camera position first, to keep the
                                       construction simple.

                                       Fixed mounting
                                       You need a small section of Velcro secured to the bottom of the cam-
                                       era’s battery pack. The mating piece of Velcro is secured to the chas-
                                       sis of the R/C car. The finished Golem robot is illustrated in Fig. 9.8.
                               Driving via telepresence

                                       You can drive the car remotely using the radio controls while looking
                                       at the TV monitor. The camera is equipped with a microphone, so
                                       you can hear audio from around the R/C car when you are driving.
                                                                                                          207

































                                         9.7 Color camera with battery pack ready for mounting on R/C car
                                                       Team LRN                               Telepresence robot
   223   224   225   226   227   228   229   230   231   232   233