Other possible Agriculture projects-
Soil moisture control,
food grain quality testing machine,
farm house automation,
canal edge diversion using sensor,
iriigation control system using mobile Bluetooth,
motor security with calling using gsm,
farm birds keeps away system,
automatic pesticide sparyer,
wirless pesticide tank controller,
pesticide prayer using quadcopter
In this project we can control any electrical MOTOR through mobile or landline from any part of the country. In this project one base unit is connected to the basic landline in parallel with the land line phone.. When we want to control any electrical motor through outer phone then first we dial the connected mobile no., bell is ringing and after few bell phone is automatic on and switch on the base unit to operate. Now we press the single digital excess code, if the excess code is ok then unit give a tone pulse and switch on the base unit. Now again we press the switch on/off code to on/off any electrical motor. With the help of this code unit is on and base unit give a acknowledge pulse for on and off separately. in this project we can control number motors and different electrical functions through mobile.
In dtmf decoder circuit we use ic 8870 ic. IC 8870 is a dtmf decoder ic. IC 8870 converts the dual tones to corresponding binary outputs.
DTMF SIGNALLING. Ac register signaling is used in dtmf telephones, here tones rather than make/break pulse are used fro dialing, each dialed digit is uniquely represented by a pair of sine waves tones. These tones ( one from low group for row and another from high group fro column) are sent to the exchange when a digit is dialed by pushing the key, these tone lies within the speech band of 300 to 3400 hz, and are chosen so as to minimize the possibility of any valid frequency pair existing in normal speech simultaneously. Actually, this minimisator is made possible by forming pairs with one tone from the higher group and the other from the lower of frequencies. A valid dtmf signal is the sum of two tones, one from a lower group ( 697-940 Hz) and the other from a a higher group ( 1209-1663 Hz). Each group contains four individual tones. This scheme allows 10 unique combinations. Ten of these code represent digits 1 through 9 and 0. . tones in DTMF dialing are so chose that none of the tones is harmonic of are other tone. Therefore is no change of distortion caused by harmonics. Each tone is sent as along as the key remains pressed. The dtmf signal contains only one component from each of the high and low group. This significaly simplifies decoding because the composite dtmf signal may be separated with band pass filters into single frequency components, each of which may be handled individually.
Look around. Notice the smart “intelligent” systems? Be it the T.V, washing machines, video games, telephones, automobiles, aero planes, power systems, or any application having a LED or a LCD as a user interface, the control is likely to be in the hands of a micro controller!
Measure and control, that’s where the micro controller is at its best.
Micro controllers are here to stay. Going by the current trend, it is obvious that micro controllers will be playing bigger and bigger roles in the different activities of our lives.
The world of Micro controllers
What is the primary difference between a microprocessor and a micro controller? Unlike the microprocessor, the micro controller can be considered to be a true “Computer on a chip”.
In addition to the various features like the ALU, PC, SP and registers found on a microprocessor, the micro controller also incorporates features like the ROM, RAM, Ports, timers, clock circuits, counters, reset functions etc.
While the microprocessor is more a general-purpose device, used for read, write and calculations on data, the micro controller, in addition to the above functions also controls the environment. We have used a whole lot of technical terms already! Don’t get worried about the meanings at this point. We shall understand these terms as we proceed further
For now just be aware of the fact, that all these terms literally mean what they say.
- Low cost
- Flexible due to microcntroller
- Easy to use- system is very easy to understand
- Against currption- System is against corrupt police. It will help to reduce corruption in police. Because challan’s will be in electronics records.
- Protection- it will also help in protecting from bank and home robbery’s.
- Wireless system
- LCD display
- RF technology
8051 programmer universal kit
ORCAD for PCB design
Proteus for simulation
DTMF DECODER CM8870
DECODER IC 74LS154
RELAYS- 180 OHM 12V
TRANSFORMER 12 V
DECADE COUNTER IC 4017
COPPER CLAD BOARD