Robot Building for Beginners, Third Edition

CHAPTER 4 ■ DIGITAL MULTIMETER Figure 4-13. Meter transitioning through logic states Figure 4-14. Rubber boot (edge cover) for m ...

CHAPTER 17 ■ DC MOTORS Most DC motors spin at 3000 RPM to 8000 RPM. At the high end, that means the motor can rotate its shaft a ...

CHAPTER 4 ■ DIGITAL MULTIMETER If a rubber boot is available but not included with the meter, it might be best to purchase the b ...

CHAPTER 17 ■ DC MOTORS However, you can measure even tens of thousands of RPM very accurately by a device called a tachometer. F ...

CHAPTER 4 ■ DIGITAL MULTIMETER A pair of hooks can be more perilous in that the multimeter becomes physically attached to the ci ...

CHAPTER 17 ■ DC MOTORS Mounting putty is available at local hardware stores, office supply outlets, and even some supermarkets. ...

CHAPTER 4 ■ DIGITAL MULTIMETER Display: 1999 Means the same thing as 3½ digits. DC Volts: 200mV Lowest DC voltage setting is 200 ...

CHAPTER 17 ■ DC MOTORS Contrast the electric screwdriver with a computer fan. The computer fan has lots of speed, but the fan bl ...

CHAPTER 4 ■ DIGITAL MULTIMETER Figure 4-17. Moderately-priced digital multimeter There are some features that I’d miss if I had ...

CHAPTER 17 ■ DC MOTORS I find gf-cm the most graspable torque unit for small robot motors. Table 17-4 lists other common torque ...

CHAPTER 4 ■ DIGITAL MULTIMETER 3¾ Digit This meter can display numbers up to 3999. Large display and units Easier to read, parti ...

CHAPTER 17 ■ DC MOTORS The example of a soda can connected one centimeter away isn’t totally accurate because the can itself is ...

CHAPTER 4 ■ DIGITAL MULTIMETER 40,000 count display The display has five digits, which is quite a lot. The high number of digits ...

CHAPTER 17 ■ DC MOTORS The escap motor was received second-hand, so I don’t know the nominal voltage. Assuming 12 V, this high-q ...

CHAPTER 4 ■ DIGITAL MULTIMETER Optical USB data output This meter has a USB cable, unlike older multimeters that require a PC wi ...

CHAPTER 17 ■ DC MOTORS To be fair, the escap motor costs 10 times as much, weighs 2.5 times as much, has ¼ the RPM at 3 V, and i ...

CHAPTER 4 ■ DIGITAL MULTIMETER Examining Other Meters Visit http://www.robotroom.com/Multimeter-Reviews.html to see descriptions ...

CHAPTER 17 ■ DC MOTORS Luckily, it’s not that bad. There’s a property called inductance that doesn’t like to see a sudden change ...

CHAPTER 5 ■ Chapter 5: Numbers and Units Here is the last building block before you’re introduced to the line-following robot. T ...

CHAPTER 17 ■ DC MOTORS Load Current As force is added to the shaft of the motor, by attaching wheels or driving a robot uphill, ...