vb.net barcode reader tutorial ' ' ' ' BS2 Robot Move This Program Moves the Toy Based Robot Randomly in Software

Printer QR Code JIS X 0510 in Software ' ' ' ' BS2 Robot Move This Program Moves the Toy Based Robot Randomly

' ' ' ' BS2 Robot Move This Program Moves the Toy Based Robot Randomly
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HACKING TOYS
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FIGURE 11-10 The PCB is cut underneath the current limiting resistors, which pass the receiver s control signals to the toy s motor drivers.
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FIGURE 11-11 Add extension wires to the motor driver resistors and bring them out to a connector.
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11.3 ROBOTS FROM CONVERTED VEHICLES
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4 5 6 7 8
BASIC Stamp 2
Right Forward Right Reverse Left Forward Left Reverse
9 10 11 12
Connector to Toy
FIGURE 11-12 The BASIC Stamp 2 control circuit for providing computer control of the hacked toy. More information about the BS2 and its operation can be found in 15.
FIGURE 11-13 Pieces of phenolic PCB material were cut down, drilled for 6-32 nylon bolts, and epoxyed into the toy s plastic chassis to provide mounting for the BS2 PCB.
HACKING TOYS
' myke predko ' ' 05.09.19 ' '{&STAMP BS2} '{&PBASIC 2.5} ' I/O Ports RightForward RightReverse LeftForward LeftReverse ' Variables i VAR Byte ' Mainline LOW LOW LOW LOW DO RightForward RightReverse LeftForward LeftReverse ' Make all the Motor Drives Output
PIN PIN PIN PIN
4 5 6 7
Loop Forever
FIGURE 11-14 Ready to roll! The modifications to the toy are complete and the BS2 has been added and is ready for programming.
11.4 FROM HERE
HIGH RightForward HIGH LeftForward PAUSE 1500 LOW LeftForward PAUSE 750 LOOP
Move Forward for 1.5 Seconds
Turn Left for 0.75 Seconds
This program simply moves the robot forward for a second and a half and then turns left before repeating. The BS2 PCB and mounting hardware weigh quite a bit less than the original toy s chassis, and the toy, which was already quite fast, is extremely fast with the lighter modifications in place. To be able to effectively use the robot, a PWM will have to be put in place to throttle down the motors to get a more realistic and controllable operating speed for the robot. It should be noted that you will find figuring out the wiring of a hacked toy will rarely be as straightforward as the prototype shown here. Often, toys will use surface mount technology (SMT) components, which are much smaller and harder to trace than the oldfashioned pin through hole (PTH) components found in this toy. Remember that the radio circuitry is always separate from the motor driver circuitry on the PCB and the regular nature of the motor driver circuitry (consisting of multiple transistors and resistors) makes it quite easy to identify. Once you have identified the motor driver circuitry, you should be able to find the current limiting resistors for the motor driver transistors; from here it should be quite easy to work through the robot modification.
11.4 From Here
To learn more about . . . Brains you can add to robots made from toys Using the BS2 Microcontroller Overview of DC Motors Read 12, An Overview of Robot Brains 15, The BASIC Stamp 2 Microcontroller 20, Working with DC Motors
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PA R T
COMPUTERS AND ELECTRONIC CONTROL
Copyright 2006, 2001, 1987 by The McGraw-Hill Companies, Inc. Click here for terms of use.
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CHAPTER
AN OVERVIEW OF ROBOT BRAINS
rain, brain, what is brain If you re a Trekker, you know this is a line from one of the original Star Trek episodes entitled Spock s Brain. The quality of the story notwithstanding (it is universally regarded as one of the worst, yet paradoxically one of the most popular), the episode was about how Spock s brain was surgically removed by a race of temporarily hyperintelligent women who needed it to run their underground environmental control system. Dr. McCoy was able to create a control mechanism that would allow somebody to operate Spock s brainless body in order for it to be present when the brain was found. Without its brain, Spock s body was not much more than a remotely controlled model car; capable of performing some operations under direct human control, but not able to operate autonomously. The brains of a person or robot process information from the environment; then based on the programming or logic they determine the proper course of action. Without a brain of some type and the ability to respond to different environmental information, a robot is really nothing more than just a motorized toy. A computer of one type or another is the most common brain found in a robot. A robot control computer is seldom like a PC on your desk, though robots can certainly be operated by most any personal computer. And of course not all robot brains are computerized. A simple assortment of electronic components a few transistors, resistors, and capacitors is all that is really needed to make a rather intelligent robot. Endowing your robot with electronic smarts is a huge topic, so additional material is provided in the following chapters to help you understand how electronic sensors and actuators are interfaced to computers and how decisions are made on which actions to take.
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