Robot Building for Beginners, Third Edition

CHAPTER 14 ■ VARIABLE RESISTORS As the floor in front of the robot becomes darker, the photoresistors increase in resistance. If ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER I cut a hole in the center of the paper with an ordinary paper punch. The switch bushin ...

CHAPTER 14 ■ VARIABLE RESISTORS The voltage at TP1 and the voltage at TP2 vary based on the amount of light seen by the pair of ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER With the line-following switch in the center (off ) position, place the powered-on (ye ...

CHAPTER 14 ■ VARIABLE RESISTORS The trimpot (R2) will probably be marked “203,” which represents “20” followed by three zeros, w ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER If the headlights and sensors are too near the floor, only fringe amounts of light (if ...

CHAPTER 15 Comparators You’re in the midst of prototyping a line-following robot on a solderless breadboard. At this point, the ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER The other two jumper leads should be hooked to TP1 and TP2, respectively. If you didn’t ...

CHAPTER 15 ■ COMPARATORS Examining the LM393 The LM393’s full title is “Low Power, Low Offset Voltage, Single Supply, Dual, Diff ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER The results of these experiments are not applicable if you lift up the robot from stand ...

CHAPTER 15 ■ COMPARATORS The pinout of the LM393 comparator chip is shown in Figure 15-2. There’s a notch and/or a dot atop the ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER The lower resistance of the photoresistors on the right side has a voltage-reducing ef ...

CHAPTER 15 ■ COMPARATORS Recall that a circuit turns off if either end of its power is disconnected. Therefore, if you connect t ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER The first frame shows the robot perfectly centered over the black line. Both sets of se ...

CHAPTER 15 ■ COMPARATORS The letter ”N” follows each part number in Table 15-1. The final letter(s) in a part number usually sig ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER The robot proceeds in the same manner as it did for following a dark line. The vital di ...

CHAPTER 15 ■ COMPARATORS In a schematic, the dual comparators would not be drawn as a chip package. Instead, each comparator wou ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER Solving Steering Problems If the robot is struggling to complete certain turns, there a ...

CHAPTER 15 ■ COMPARATORS A hop in a wire appears just above pin 5. The hop indicates that those wires aren’t connected. Some sch ...

CHAPTER 25 ■ LAUNCHING THE LINE-FOLLOWER Potential Improvements Line-following robot: Several potentially beneficial changes to ...