603%20A%20DIGITAL%20PROGRAMMABLE%20ROBOT

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603 A DIGITAL PROGRAMMABLE ROBOT

• OVERVIEW
• BASED ON CONCEPT OF PLC.
• IS PROGRAMMABLE USING A KEYPAD.
• POWERED BY A 9 VOLT BATTERY.
• INSTRUCTIONS CAN BE PROGRAMMED INTO MEMORY IN A
  SEQUENCTIAL FASHION.
• OPERATING FREQUENCY(SPEED) CAN BE VARIED USING A
  CLOCK CIRCUIT.
• HAS HARDWARE AND SOFTWARE RESET FACILITY.

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BASIC COMPONENTS

• THE PROGRAMMABLE ROBOT CONSISTS OF FOLLOWING
  BASIC ELECTRONIC CIRCUITS
• VOLTAGE REGULATOR
• TO PROVIDE 5 V DC POWER SUPPLY
• USES A ZENER DIODE FOR VOLTAGE REFERECE
• CLOCK GENERATION CIRCUIT
• USES ASTABLE MULTIVIBRATOR
• POTENTIOMETER IS USED TO CONTROL THE CLOCK RATE
• OPERATING FREQUENCY OF 603 A ROBOT IS 0.45/RC
• MEMORY LOAD SEQUENCER
• CONSISTS OF FLIP-FLOPS AND FEW GATES
• LOADS INPUTS FROM KEY PAD INTO MEMORY
  SEQUENCTIALLY
• RESET CONTROLLER AND CIRCUIT
• HAS TWO RESET CIRCUITS MANUAL AND PROGRAMMABLE
• MEMORY CIRCUIT

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• ADDRESS COUNTER
• USES A CMOS BINARY COUNTER IC
• CONTAINS 12 COUNTING STAGES OUTPUTTING FROM 0 TO
  111111111111.
• ONLY 8 STAGES OF THE COUNTER ARE USED.
• AUDIO OSCILLATOR
• DESIGNED TO OPERATE AT A HIGHER FREQUENCY THAN
  THE CLOCK
• MOTOR DRIVE CIRCUIT
• HAS TWO IDENCITAL MOTOR DRIVE CIRCUITS- LEFT AND
  RIGHT
• CONSISTS OF ELCTRONIC SWITCHES
• LED INDICATOR CIRCUIT
• USED AS A WARNING TO INDICATE THE MAXIMUM NUMBER
  OF PROGRAM INSTRUCTIONS.
• MEMORY CAN ALSO BE PROGRAMMED TO LIGHT THE LED
• KEY PAD
• USED TO PROGRAM INSTRUCTIONS INTO THE ROBOTS
  MEMORY
• CONSISTS OF 5 SWITCHES AND TWO JUMPERS.

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CIRCUIT DESCRIPTION
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MECHANICS OF 603 A ROBOT

• PERFORMS TWO BASIC TASKS
• TRANSFER POWER FROM THE MOTORS TO THE WHEELS
• PROVIDE THE STEERING FUNCTION
• TASKS ARE ACCOMPOLISHED BY A SERIES OF GEARS
  CALLED THE DRIVE TRAINS.
• MOTORS RUN WELL ONLY WHEN GEARS ARE TURINING AT A
  CERTAIN SPEED.
• A PROPER COMBINATION OF THE RIGHT KINDS OF GEARS
  IS A MUST TO CONTROL THE SPEED AND PRODUCE THE
  REQUIRED TORQUE.
• STEERING IS ACCOMPOLISHED BY OPERATING ONLY ONE
  MOTOR AT A TIME.