McGraw-Hill - The Robot Builder''''''''s Bonanza Part 10 pptx

... 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

... 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-, 100 K-, 500K-, and 250K-ohm values. You’ll find that 500K-ohm and 1-mego...

Ngày tải lên: 10/08/2014, 04:22

... it accordingly. The teleoperated robot of today is a far cry from the radio-controlled robots of the world’s fairs of the 1930s and 1940s. Many tele-robots, like the world-famous Mars Rover Sojourner, the ... legged robot. First, 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...

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

... 1/2-inch (approx.) 10/ 24 all-thread rod 1 6-inch-diameter (approx.) clear plastic dome 1 Four-cell AA battery holder Assorted 1/2-inch-by-8/32 bolts, 8/32 nuts, lock washers, 1/2-inch-by -1 0/ 24 ... 1-inch-by -1 0/ 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 caster 2 2-by-4-inch lumber (cut to length to fit motor) 1...

Ngày tải lên: 10/08/2014, 04:22

... Pepbot travel faster. ■ The smaller the wheel, the less clearance there is between the bottom of the robot and the floor. Conversely, the larger the wheel, the more clearance there will be. This ... 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...

Ngày tải lên: 10/08/2014, 04:22

... So far, so good, but the amp-hour rat- ing is not that simple. The 5 AH rating is actually taken at a 1 0- or 20-hour discharge inter- val. That is, the battery is used for 10 or 20 hours, at a ... resistors to drop the 9 volts from the RCX to the 5 or 6 volts expected by the relay coil. ■ The MLX10402 can provide up to 500 mA to each motor (this is the specification ra...

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 ... want to recharge the batteries while they are inside the robot. This is no problem as long as you install a connector for the charger terminals on the outside of the...

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

... mounting the shaft encoders on the motor shafts, mount them on the wheel shafts (if they are different). The number of slots in the disk determines the maximum accuracy of the travel circuit. The ... lead to the same winding; a reading indicates a winding. If the motor has six wires, then four of the leads go to one side of the windings. The other two are commons and...

Ngày tải lên: 10/08/2014, 04:22