THE ROBOT BUILDER’S BONANZA pot

... there is the question of the number of legs and how the legs provide stability when the robot is in motion or when it’s standing still. Then there is the question of how the legs propel the robot ... the design of a robotic arm . . . ■ At a county fair, it’s the robot experimenter who studies the way the “egg-beater” ride works, watching the various gears spin in...

Ngày tải lên: 27/06/2014, 15:20

... Appendix A, “Further Reading,” for more information. 12 ANATOMY OF A ROBOT Ch02_McComb 8/29/00 8:39 AM Page 12 PART 1 ROBOT BASICS Ch 01_ McComb 8/ 21/ 00 3 :16 PM Page 1 Copyright 20 01 The McGraw-Hill Companies, ... it accordingly. The teleoperated robot of today is a far cry from the radio-controlled robots of the world’s fairs of the 19 30s and 19 40s. Many te...

Ngày tải lên: 10/08/2014, 04:22

... Get the plain stuff: it’s 10 to 25 percent cheaper. Two particularly handy stocks are 41/64-by-1 / 2- by-1/16-inch channel and 57/64-by- 9/16-by-1/16-inch channel. I use these extensively to make the ... assortment of the small PC-mount pots (about 80 cents each retail) in the 1-megohm and 2. 5K-, 5K-, 10K-, 50K-, 100K-, 500K-, and 25 0K-ohm values. You’ll find that 500K-ohm and 1-...

Ngày tải lên: 10/08/2014, 04:22

... wire-wrap IC sockets to the board and insert the com- ponents into the sockets. Bend and cut the leads so they fit into the socket. If the compo- nent is large or wide, use a 2 4-, 2 8-, or 40-pin ... in dual in-line packages (DIPs), as shown in Fig. 5.6. The illustration shows several sizes of DIP ICs, from 8-pin to 40-pin. The most common are 8-, 1 4-, and 16-pin. T...

Ngày tải lên: 10/08/2014, 04:22

... Base: 1 10-inch-by-10-inch plywood (3/ 8- or 1/2-inch thickness) Misc 1-inch-by-10/ 24 stove bolts, 10/ 24 nuts, flat washers Motor/drive: 2 DC gear motors 2 5- to 7-inch rubber wheels 1 1 1 / 4- inch ... 1 / 4- inch caster 2 2-by -4 - inch lumber (cut to length to fit motor) 1 Four-cell “D” battery holder Misc 3-inch-by-10/ 24 stove bolts, 10/ 24 nuts, flat washers (for motor mount...

Ngày tải lên: 10/08/2014, 04:22

... Velcro (otherwise known by the generic term “hook-and-loop”). Get the kind with self-sticking adhesive backing. Put the hook material on one piece and the loop on the other. Press them together for ... at the servo top down, with the output shaft on the top). For the other servo, glue the plate to the left side. Be careful to align the plates on the servos so they ar...

Ngày tải lên: 10/08/2014, 04:22

... to make a 6- volt pack. You can, if you wish, take the pack apart, unsolder the cells, and use them separately. Although lead-acid batteries are powerful, they are heavy. A single 6- volt pack ... with the old, run-of -the- mill batteries used in everyday applications. 15 ALL ABOUT BATTERIES AND ROBOT POWER SUPPLIES 189 Ch15_McComb 8/29/00 8:37 AM Page 189 Copyright 2001 The McGr...

Ngày tải lên: 10/08/2014, 04:22

... design in either of two ways: ■ Reduce the height of the robot to better match the area of the base, or ■ Increase the area of the base to compensate for the height of the robot. (There is also ... The current capacity of the 78 00 and 79 00 series that come in the TO-220 style transistor packages (these can often be identified as they have no suffix or use a “T” s...

Ngày tải lên: 10/08/2014, 04:22

... travel speed once the robot is all put together may be lower than this. The heavier the robot, the larger the load on the motors, so the slower they will turn. Round Robots or Square? Robots can’t ... the force the motor exerts upon its load. The higher the torque, the larger the load can be and the faster the motor will spin under that load. Reduce the torq...

Ngày tải lên: 10/08/2014, 04:22

... step- pers and learn how to apply them to your robot designs. 19 WORKING WITH STEPPER MOTORS 2 79 Ch 19_ McComb 8/ 29/ 00 8:36 AM Page 2 79 Copyright 2001 The McGraw-Hill Companies, Inc. Click Here ... encoder discs. They are about perfect for the average small-or-medium-size robot. Ch18_McComb 8/18/00 2:11 PM Page 273 cuit every 7.2°. Stated another way, if the robot is out...

Ngày tải lên: 10/08/2014, 04:22

... 305 1-inch-by-3/8-inch corner angle irons. Use 8/32 by 1/2-inch bolts to attach the iron to the beam. Connect the angle irons to the risers using the 8/32 by 1 1/2-inch bolts installed ear- lier. ... (refer to the parts list in Table 21.1). Do the same with the 9 1/8-inch stock. Assemble the pieces using 1 1/4-by-3/8-inch flat corner irons and 8/32 by 1/2-inch nuts and bolt...

Ngày tải lên: 10/08/2014, 04:22

... 1 / 2- inch-by-1 / 2- inch corner angle iron 1 3 1 / 2- inch-by-1/4-inch 20 stove bolt 2 1/4-inch 20 locking nuts, nuts, washers, tooth lock washers 2 1 / 2- inch-by-8/ 32 stove bolts, nuts, washers 1 1-inch-diameter ... DESIGNS TABLE 27 .3 PARTS LIST FOR WORM DRIVE GRIPPER. 2 3- inch lengths 41/64-inch-by-1 / 2- inch-by-1/16-inch aluminum channel 2 1-inch-diameter 64-pitch pl...

Ngày tải lên: 10/08/2014, 04:22

... inter- face. +V Q1 Q2 Q3 Q4 40 11 (1 /4) +12V 1 2 3 4 5 6 g g d d g d s s s 7 14 0.1 C1 0 1Forward Reverse Direction control g d s M1 40 11 (1 /4) D1 D3 D2 D4 D1-D4: 1N40 02 Q1-Q4: n-channel MOSFET FIGURE 29 .5 Discrete component H-bridge interface. Ch29_McComb 8/18/00 2: 16 PM Page 44 1 In the “Wizard of Oz,” the Scarecrow ... ANALOG INPUT 44 5 +12vdc 3 12 2 4 5 R2 10K...

Ngày tải lên: 10/08/2014, 04:22

... (8) Input Select Digital outputs +5V 21 MSB LSB 20 19 18 Q1 Q7 Q6 Q5 Q4 Q3 8 Q2 15 14 Q0 17 IN1 IN0 IN2 IN3 IN4 IN5 IN6 IN7 26 27 28 1 2 3 4 5 1 2 3 4 5 6 7 0 A1 A2 A4 Sc Start Conversion 500kHz In Eoc End ... applied to the input of the HT-12D encoder. The Holtek Web page provides data sheets and circuit recommendations for the HT-12D chip. There are five important...

Ngày tải lên: 10/08/2014, 04:22

... in, 26 5 26 8 odometry with, 27 0 27 6, 628 –631 power MOSFET for, 26 2 relay control in, 25 5 torque in, 24 0 24 2 transisitor control of, 25 7 26 2 travel speed of, 23 1 versus other motor types, 23 5 23 7 differential ... 94903 (415) 49 1-4 600 www.robotstore.com Mr. Robot 8 822 Trevillian Road Richmond, VA 23 235 (804) 27 2- 5 7 52 www.mrrobot.com Norland Research 8475 L...

Ngày tải lên: 10/08/2014, 04:22