基础机器人制作与编程课程.ppt

* Discuss the PBASIC commands required for the RCTIME command. Explain graphically what they do to the voltage. Explain how the time variable can then be displayed using the DEBUG command. Explain how the time variables value can be massaged and then used by the pulsout command to control a servo. Emphasize that they can run this program and watch their servo turn as they turn the dial. Reiterate that this is the last activity in the dial chapter, and its another example of a “fun” end of chapter activity. Make sure to explain the + 330. If time permits, delve into scaling. * Introduce controlling lights and motion was just done. This and a myriad of other applications often require a digital display of some sort. Mention that the board can be cleared for this exercise, but that they will need to keep it on the board for the following exercise as well. * Explain that there is a manual exercise that allows students to manually connect each segment and make it light up individually. We will skip to the programmed version. Challenge them to guess how this program will effect the lights, in what sequence. * Introduce OUTL and OUTH, DIRL, and DIRH, and their relationship to IN3 and IN4 INL and INH . Apologize for turning the picture and map upside-down. * Explain that OUTH is a variable, and can store a binary number. Explain how LOOKUP works. check value of index, place corresponding bit pattern in OUTH . Debug is not part of the text. Explain the learn by doing approach. EMPHASIZE that they pay attention to the bit patterns that are displayed, and how they correspond to the value of index and the way LOOKUP works. * Introduce Frequency and Sound chapter as having a simple circuit, but the most complex of the programming techniques. * Explain what each of these routines does and point out a programming technique. * Emphasize that most musical programs are best heard with the piezospeaker close to your ear. Explain mixing two frequencies together and tell them wha