Robot Building for Beginners, Third Edition
CHAPTER 1 Welcome Robot Inventor! You’ve chosen a stimulating and rewarding hobby. It’s more expensive than insect collecting, b ...
CHAPTER 15 ■ COMPARATORS Examining the LM393 The LM393’s full title is “Low Power, Low Offset Voltage, Single Supply, Dual, Diff ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! Figure 1-1 shows a typical homemade robot. This robot is capable of finding opposition robot ...
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 1 ■ WELCOME ROBOT INVENTOR! But, all in all, the top choice for robot brains is the microcontroller chip (see Figure 1-2 ...
CHAPTER 15 ■ COMPARATORS Recall that a circuit turns off if either end of its power is disconnected. Therefore, if you connect t ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! Rechargeable batteries are preferable. Although their initial cost is higher, they’ll save t ...
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 1 ■ WELCOME ROBOT INVENTOR! As batteries are used up, they provide less and less power. Unless stabilized, this would re ...
CHAPTER 15 ■ COMPARATORS In a schematic, the dual comparators would not be drawn as a chip package. Instead, each comparator wou ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! Interestingly, solar-powered robots usually don’t have a power switch. Those robots wake up ...
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 1 ■ WELCOME ROBOT INVENTOR! Pushbuttons Switches and pushbuttons (see Figure 1-7) are a subset of sensors. They “sense” ...
CHAPTER 15 ■ COMPARATORS Connect IC1 to the sensor test points (look ahead at Figure 15-7, if necessary) using reinforced jumper ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! Action and Feedback Robots perform actions coordinated with the processing of sensor informa ...
CHAPTER 15 ■ COMPARATORS Test point 1 (TP1) connects to IC1 input B-, which is then connected to IC1 input A+. Test point 2 (TP2 ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! Indicator Lights Lots of tiny lights adorn most robots. LEDs (light-emitting diodes) indicat ...
CHAPTER 15 ■ COMPARATORS Check that positive power is being supplied to the top wire of R1, R7, R8, and IC1 V+ (pin 8). You can ...
CHAPTER 1 ■ WELCOME ROBOT INVENTOR! A lot of other stuff is needed, too! Wires, connectors, capacitors, resistors, diodes, and o ...
CHAPTER 15 ■ COMPARATORS Figure 15-9. Moving the comparator input’s jumper wire from the sensor test points (left) to the power ...
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