"Block Diagram" and "Circuit Diagram"

 BLOCK DIAGRAM OF THE SYSTEM

The working of the system is as follows as explained through figure 1.1 and figure 1.2. This is to provide you with the basic idea about the entire quad-copter system.

Abstract Description:

When the system is switched on, the receiver starts listening to the transmitting frequency (here 2.4 GHz).The transmitter gives commands for throttle. yaw, pitch and roll which is interpreted by the 4 channels of the receiver used. The PWM signals are forwarded to an 8 channel PWM to PPM convertor. The PPM signal from the converter is send to the ARDUIMU at pin no.12. This PPM signal is processed by the IMU controller n 4 PWM outputs for the four motors are output from pin no.14, 15, 16, 17. 

This PWM signals are given to Electronic Speed Controller which also receive a battery connection each of 11 volts. The ESC switches the supply across the motor coils to run it at a specified speed. The sensors continuously monitor the orientation of the Quad copter in air. Accelerometer and Gyroscope are in build on the ARDUIMU and Magnetometer is added externally.  Whenever a tilt is encountered it is compensated using Tilt compensation algorithm. The speeds of the motors are varied accordingly to stabilize the Quad copter.

The camera transmits a video on 1.2 GHz channel which is received and displayed on a laptop or computer using a T.V Tuner card. This video can also be recorded.

ECS stands for Electronic Speed Controller. Details about ECS would be uploaded soon.

PWM and PPM stands for Pulse Width Modulation and Pulse Position Modulation respectively, details for which would be soon uploaded in upcoming pages.

FIGURE 1.1: BLOCK DIAGRAM OF THE SYSTEM

CIRCUIT DIAGRAM OF THE SYSTEM

Circuit diagram shows how different components are connected to the ARDUIMU board.

                                                            

FIGURE 1.2: CIRCUIT DIAGRAM OF THE SYSTEM