Remote Operated Spy Robot Circuit
Here is a remote operated spy robot circuit which 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. This robot consists of mainly two sections. They are explained in detail below.
Remote Control Operated Spy Robot Circuit – Block Diagram
Remote Control Operated Spy Robot Circuit – Block Diagram
1. Remote Control Section
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. The working of the circuit is as follows.
When we are pressing any key in remote controller the HT 12E generate 8 bit address and 4 bit data .The DIP switches are used for setting the address. Then the ASK transmitter sends the 8 bit address and 4 bit data to the receiver Then the ASK receiver receives the 8 bit address and 4 bit data and HT 12D decoder decodes the data, thus enabling the appropriate output. 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, and makes building a miniature hand-held RF transmitter very easy. The 433 MHZ ASK transmitters is approximately the size of a standard postage stamp
433 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.
Remote-Control-Operated-Spy-Robot-Circuit-Remote-Control-Section
2. Video Transmission Section
In this project we are using a wireless CCD camera. Now these types of cameras are commonly available in the market. It works on 12VDC supply.
To know more about CCD camera, click on the link below.
TAKE A LOOK : CHARGE COUPLED DEVICES (CCD)
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.
Remote Operated Spy Robot – Remote Control Section
Components Required
| IC | HT 12E | 1 |
| HT 12D | 1 | |
| LM 7805 | 2 | |
| TRANSISTOR | TIP 127 | 4 |
| TIP 122 | 4 | |
| S 8050 | 4 | |
| DIODE | 1N 4148 | 8 |
| RESISTOR | 1K | 4 |
| 220E | 4 | |
| 39K | 1 | |
| 1M | 1 | |
| ASK TRANSMITTER | 433 MHz | 1 |
| ASK RECEIVER | 433 MHz | 1 |
| DIP SWITCH | 2 | |
| PUSH TO ON SWITCH | 4 | |
| GEAR MOTOR | 12V DC 100rpm | 2 |
| BATTERY | 12V 1.3 Ah rechargeable | 1 |
| 9V | 1 | |
| WIRELESS CCD CAMERA | 1 |
Construction
The steps for the construction are…
1. Take a hylam sheet with (20cm*15cm) size.
2. Fix two gear motors (12VDC 100rpm) in the hylam sheet by using aluminum pieces and nut bolts as shown in the figure below.
3. Fix the ball castor as shown in the figure below.
- Construction of Remote Operated Spy Robot Circuit
4. Then fix the battery (12VDC 1.2Ah) on the top of the spy robot as shown in the figure below.
- Construction of Remote Operated Spy Robot Circuit – Top View
5. Connect two motors to the PCB. The PCB is then connected to the battery.
6. Connect the wireless CCD camera to the battery.
7. Connect the camera receiver to the TV or computer. Video information’s will thus appear in the screen.
8. Switch on the remote controller and control the spy robot.
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Its sgmple and super circuit .I made this circuit it is succesfully working
thanks to this site
Hi This is Anand,
I understand your problem u have faced while doing this project Mr.Amit and Mr.Priyatam.
Solution;
The soln of this project is to connect D8,D9,D10,D11 pins through one NOT GATE Ic-7404.
Because it requires inverted data for your motor driver unit.
we are also facing the same problem as Priyatam …thw wheels keep on rotating after giving power supply !!! please reply soon as posssible ..we have project demo in two days
when i switch on the circuit, the wheels are rotating continuously and there is no change after pressing any of the buttons.the connections are made properly.please tell the necessary corrections if any
is this robo work .. i have don whole circuit but i did not get any out put i think i have don it correctly . but when i am operating remote the wheels are not moving at all ..plez plez plez ……..say me what is the prob in this …….. can u give me any layout of these circuit plez
how does the robo turns left and right? There is no mechanical part to turn the wheels left and right. I think it can move only straight direction. How does it traces a curved path?
thank you very much sir………………..exactly i want this only and i am happy.sir
hi
i m sagar yeldi from solapur i have 1 problem due to make this project.
is that you published this circuit diagram is correct or not?
due to i occur some problem.pease tell me your responce to my e mail address..
thank you!
please ,tell me to how much may a cost and components cost details,
programing is needed or not for this project? pls reply
this project need programming or not?,,if programming is needed,can i have the programming?
wow nice,pls send the cost of the project……..
ya its a good project and i gain idea about robotics for my project, i need how much cost this project will take?
please tell me how much it may cost? plz plz plz plz
thanks…i m thinking of constructing this one….could you please tell me about expenses…like how much it may cost
Thanks
This article helped me design my major project 
please give details of ccd cammera and how this works (vedio and audio transmissin) ,displing the vedio at pc
pls.. give details about ccd camera…
Hey,
Do you any options for CCD cameras.
And concerning the controller, you can take this idea and deploy it with a PIC controller. I have seen a circuit similar to this using a Microchip PIC controller (but i forgot where!) Just google it such as “spy robot” etc.
Hi sadiq, you can buy a separate tans-receiver module instead of making one. They are available as modules. Ask for it mentioning for the frequency of operation.. I donno whether encoding is available in that modules or not.
Sorry for bothering you but I definitely want the info I request.Thanks
I am trying out this prjoect but it seems the components are obsolete and unavailable in Nigeria.Please do you have replacements for the encoder decoder and trans/reciever or their schematic diagram?
it is nice to i take the circuit it is use full to me than you
its nice ,but do you have a transforming robot circuit and its design?