Robot Building for Beginners, Third Edition

CHAPTER 7 ■ NINE-VOLT BATTERIES Realistically, many consumer devices stop performing adequately when their 9 V battery falls bel ...

CHAPTER 19 ■ WHEELS Although LEGO no longer sells these particular wheels, there are plenty of other sources. If you don’t happe ...

CHAPTER 7 ■ NINE-VOLT BATTERIES When purchasing NiMH 9 V-size batteries, look for the rated voltage and the rated capacity (mAh) ...

CHAPTER 19 ■ WHEELS By using 22 cm circumference wheels instead of 16 cm circumference wheels, the linear speed increases propor ...

CHAPTER 7 ■ NINE-VOLT BATTERIES The disadvantages of lithium-polymer batteries are that they are more expensive and that you mus ...

CHAPTER 19 ■ WHEELS Table 19-2 lists some of the kits that include the 42.2 x 22 ZR wheel. Table 19-2. Some Kits That Contain 43 ...

CHAPTER 7 ■ NINE-VOLT BATTERIES Figure 7-12. Non-rechargeable lithium 9 V batteries Lithium 9 V batteries have a couple of downs ...

CHAPTER 19 ■ WHEELS Ultrasonic cleaning machines vibrate with ultrasonic (above human hearing) waves. Millions of tiny bubbles f ...

CHAPTER 7 ■ NINE-VOLT BATTERIES Heavy-duty battery capacity is seriously eroded at higher discharge rates, so the respectable 40 ...

CHAPTER 20 Coupler A coupler connects two things together. This chapter consists of step-by-step instructions for making a coupl ...

CHAPTER 7 ■ NINE-VOLT BATTERIES Battery Brand Names Stiff competition has ensured that there’s no performance difference between ...

CHAPTER 20 ■ COUPLER Matching wheels screw onto the hubs. The wheels are available in a variety of sizes and colors. The two-inc ...

CHAPTER 7 ■ NINE-VOLT BATTERIES Alternatively, another robot was a little too slow and a little too weak in a robot Sumo contest ...

CHAPTER 20 ■ COUPLER Choosing Between Brass and Aluminum Tubing You can make the couplers out of either brass or aluminum (see F ...

CHAPTER 7 ■ NINE-VOLT BATTERIES There are a number of ways to physically connect a 9 V battery to a device. Most consumer produc ...

CHAPTER 20 ■ COUPLER The tube walls must be 0.014-inch thick. “Wall size” is the thickness of the metal. K&S Engineering man ...

CHAPTER 8 ■ Chapter 8: Clips and Test Leads The components on Sandwich’s circuit board are permanently soldered together. You’ll ...

CHAPTER 20 ■ COUPLER Fitting the LEGO Cross Axle into a Tube A LEGO cross axle must fit into one side of the coupler. By inserti ...

CHAPTER 8 ■ CLIPS AND TEST LEADS Obtaining Hook Clips Clips are available in many sizes and colors (see Figure 8-3). Beyond the ...

CHAPTER 20 ■ COUPLER This explains how the wall size and two of the four tube sizes were determined. The other two tubes have la ...