Remote Operated Spy Robot Circuit
- 1. Remote Operated Spy Robot Circuit -Remote Control Section -Video Transmission Section LAIBA NOOR
- 2. NAME OR LOGO REMOTE OPERATED SPY ROBOT It can be controlled by using a wireless remote controller. It can capture audio and video information’s from the surroundings and can be sent to a remote station through RF signals. The maximum range is 125 meters. It overcomes the limited range of infrared remote controllers. 2 It is divided in to two sections: 1. Remote Control Section 2. Video Transmission Section
- 3. NAME OR LOGO Components Required IC HT 12E HT12E is a 212 series encoder IC (Integrated Circuit) for remote control applications. IC HT 12D HT12D is a 212 series decoder IC (Integrated Circuit) for remote control applications manufactured by Holtek. IC LM 708 7805 IC,is a member of 78xx series of fixed linear voltage regulators used to maintain fluctuations. TIP 127 TIP127 is a PNP BJT darlington transistor. it can be used for variety of general purpose applications where you have need for high gain. TIP 122 The TIP122 is a Darlington pair NPN transistor. It functions like a normal NPN transistor, but since it has a Darlington pair inside it has a good collector current rating of about 5A and a gain of about 1000 3
- 4. NAME OR LOGO Components Required S 8050 S8050 is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. Diode 1N4148 A diode is a device which allows current flow through only one direction. That is the current should always flow from the Anode to cathode. Resistor 1K A resistor reduces (or resists) the flow of current. The value of the resistance is expressed as a number of ohms (the symbol Ω is used for ''ohm''). Resistor 220E A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element Resistor 39k Resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. 4
- 5. NAME OR LOGO Components Required Resistor 1M Most resistors are too small to show their resistance as a printed number. A colour code is used instead. RF 433MHz Receiver frequency Range: 433.92 MHz Modulation: ASK Input Voltage: 5V RF 433MHz Transmitter 433MHz is a commonly used frequency band for all types of equipment that require little power, such as garage door openers, headphones, baby phones and remote controls DIP SWITCH A DIP switch is a small switch in a DIP (dual in- line package) whose position changes the operating mode of a device. DIP switches help configure computer peripherals, such as hard drives, modems, sound cards, and motherboards PUSH ON SWITCH A push switch is a momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. 5
- 6. NAME OR LOGO Components Required Gear Motor 12V DC This is a metal DC geared motor, 100% pure copper coils, high-density molecular layer, 50:1 metal reducer, small size, large torque. The maximum torque could arrive 42 kg.cm, stable and durable. Battery 12V A rechargeable 12V gel ba ttery suitable for high cyclic and stand-by applications. Constructed in sealed, rectangular high impact plastic case. Battery 9V he nine-volt battery, or 9- volt battery, is a common size of battery that was introduced for the early transistor radios. This type is commonly used in walkie-talkies, clocks and smoke detectors. CCD Camera The majority of wireless security cameras operate on the 2.4 GHz frequency. Most household routers, cordless phones, video game controllers, and microwaves operate on the 2.4 GHz frequency and may cause interference with a wireless security camera. 6
- 7. NAME OR LOGO The circuit uses HT 12E, HT 12D encoder and decoder. 433MHz ASK transmitter and receiver is used for the remote control. H-bridge circuits are used for driving motors. Two 12V DC/100RPM gear motors are used as drivers Thus the output signals that are generated controls the H-bridge which then rotates the motors.The 433 MHZ ASK transmitter and receivers are extremely small, and are excellent for applications requiring short-range RF remote controls. The transmitter module is only 1/3rd the size of a standard postage stamp, and can easily be placed inside a small plastic enclosure. The transmitter output is up to 8mW at 433.92MHz. The transmitter accepts both linear and digital inputs and can operate from 1.5 to 12 Volts-DC, 1. Remote Control Section 7 and makes building a miniature hand-held RF transmitter very easy. The 433 MHZ ASK transmitters is approximately the size of a standard postage stamp433 MHZ ASK receivers also operate at 433.92MHz, and have a sensitivity of 3uV. The receiver operates from 4.5 to 5.5 volts-DC.
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- 10. NAME OR LOGO 2. Video Transmission Section CCD In this section we are using a wireless CCD camera. It works on 12VDC supply. To know more about CCD camera, click on the link below. The 12 Volt DC supply is taken from the battery placed in the robot. The camera has a receiver, which is placed in the remote station. Its output signals are in the form of audio and video. These signals are directly connected to a TV receiver or a computer through a tuner card.
- 11. NAME OR LOGO ASK receiver receives the serial data transmitted by the transmitter and gives it decoder to convert it to the parallel. This parallel data is given to the L293D motor driver IC to control the robot motors. Here LED D5 indicates the valid transmission. RF RECIEVER L293D MOTOR L293d is a Dual H-bridge motor driver. Used as a current amplifier since it takes low current control signal and provides higher current signal as output. This output signal is used to drive the motors. This IC drives 2 motors simultaneously, both in forward direction and reverse direction. Motor 1 direction can be controlled based on logic inputs at IN1 and IN2. Motor 2 operations are controlled based on the inputs at IN3 and IN4. Here the motors are operated with the voltage applied at pin 8. 11
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- 13. NAME OR LOGO WORKING PROCESS HARDWARE • Microcontroller: Microcontroller is a microprocessor designed specifically for control applications, and is equipped with ROM, RAM and facilities Input/ Output on a single chip. The ATmega16 is a low-power, high- performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high-density non- volatile memory technology. MICROCONTROLLER MOTORS • A motor is a device which converts electrical energy into mechanical energy while a generator is a device which converts mechanical energy into electrical energy. Both use the same principle of electrical induction that is when electricity is passed through a conductor there is a magnetic field which is created 13
- 14. NAME OR LOGO SOFTWARE PROTEUS: It is an application program for simulation of system using virtual hardware component. MAIN AIM: ○ The main aim of the project is to control the robot with wireless technology. For this purpose receiver board is designed. At the transmitting end, commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right etc from a smart phone. Receiver board is placed on the robot. Here we are using wireless communication between transmitter and receiver. At the receiving end two motors are interfaced to the AVR microcontroller where they are used for the movement of the vehicle. For the movement of the robot, DC motors are used. A wireless camera is mounted on the robot body for spying purpose. The robot has the capability of sensing temperature of its surrounding. For this purpose corresponding sensor is used on the robot according to environmental condition. 14
- 15. NAME OR LOGO LIMITATIONS ○ Mobile batteries drain out early so charging problem. ○ Cost of project if Cell phone cost included. ○ Not flexible with all cell phones as only a particular cell phone whose earpiece is attached can only be used. APPLICATIONS ○ In military and police department. ○ Disaster affected area surveillance and general surveillance. ○ Search and rescue operation. ○ Maneuvering in hazardous environment. ○ Wireless security and surveillance in hot spots. ○ In Mines at high radiation situations where its threatening for a human presence. 15
- 16. NAME OR LOGO CONCLUSION ○ With the help of camera we are able to view the things that are happening in the surrounding area where the robot is hidden. This kind of robot can be helpful for spying purpose in war field. The robot will move depending on the motor direction based upon the input. By keeping the circuit easy and simple, most of the users will be able to use it without any difficulty. Our design has not caused any sort of disturbances and not for long range application it can be used as a spy robot within short distances. 16
- 17. NAME OR LOGO ○ Take a hylam sheet with (20cm*15cm) size. ○ Fix two gear motors (12VDC 100rpm) in the hylam sheet by using aluminum pieces and nut bolts as shown in the figure below. ○ Fix the ball castor ○ Then fix the battery (12VDC 1.2Ah) on the top of the spy robot. ○ Connect two motors to the PCB. The PCB is then connected to the battery. ○ Connect the wireless CCD camera to the battery. ○ Connect the camera receiver to the TV or computer. Video information’s will thus appear in the screen. ○ Switch on the remote controller and control the spy robot. CONSTRUCTION 17
- 18. NAME OR LOGO VIDEO REMOTE OPERATED SPY ROBOT 18
- 19. REMOTE CONTROL SPY OPERATED ROBOT
- 20. Thank You