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Step 2Circuit Description
Figures shows the block diagram and cicuit diagram of the microcontroller- based robot. The important components of this robot are DTMF decoder, Microcontroller and motor driver.
An MT8870 series dtmf decoder is used here. All types of the mt8870 series use digital counting techniques to detect and decodeall the sixteen DTMF tone pairs in to a four bit code output. The built -in dila tone regection circuit eliminated the need for pre- filtering. When the input signal given at pin2 (IN-) single ended input configuration is recognized to be effective, the correct four bit decode signal of the DTMF tone is transferred to Q1 (pin11) through Q4(pin14) outputs.
The atmega 16 is a low power, 8 bit, cmos microcontroller based on the AVR enhanced RISC architecture. It provides the following feature: 16kb of in system programmable flash memory with read write capabilities, 512bytes of EEPROM, 1KB SRAM, 32 general purpose input/output lines. 32 general purpose working registers. All the 32 registers are directly connected to the arithmetic logic unit, allowing two independent registers to be accessed in one signal instruction executed in one clock cycle. The resulting architecture is more code efficient. Outputs from port pins PD0 through PD3 and PD7 of the microcontroller are fed to inputs IN1 through IN4 and enable pins (EN1 and EN2) of motor driver L293d respectively, to drive geared motors. Switch S1 is used for manual reset.
the notations are :
ic1 - mt8870
ic2 - atmega16
ic3 - l293d
ic4 - cd7004
r1,r2 - 100k resistances
r3 - 330k resistances
r4-r8 - 10k resistances
c1- 0.47 micro farat capacitor
c2,c3,c5,c6 - 22pfarat capacitor
c4 - 0.1micro farat capacitor
xtal1 - 3.57 mhz crytal
xtal2 - 12mhz crystal
s1 - push to on switch
m1,m2 - 6v 50rpm motor
batt- 6v
An MT8870 series dtmf decoder is used here. All types of the mt8870 series use digital counting techniques to detect and decodeall the sixteen DTMF tone pairs in to a four bit code output. The built -in dila tone regection circuit eliminated the need for pre- filtering. When the input signal given at pin2 (IN-) single ended input configuration is recognized to be effective, the correct four bit decode signal of the DTMF tone is transferred to Q1 (pin11) through Q4(pin14) outputs.
The atmega 16 is a low power, 8 bit, cmos microcontroller based on the AVR enhanced RISC architecture. It provides the following feature: 16kb of in system programmable flash memory with read write capabilities, 512bytes of EEPROM, 1KB SRAM, 32 general purpose input/output lines. 32 general purpose working registers. All the 32 registers are directly connected to the arithmetic logic unit, allowing two independent registers to be accessed in one signal instruction executed in one clock cycle. The resulting architecture is more code efficient. Outputs from port pins PD0 through PD3 and PD7 of the microcontroller are fed to inputs IN1 through IN4 and enable pins (EN1 and EN2) of motor driver L293d respectively, to drive geared motors. Switch S1 is used for manual reset.
the notations are :
ic1 - mt8870
ic2 - atmega16
ic3 - l293d
ic4 - cd7004
r1,r2 - 100k resistances
r3 - 330k resistances
r4-r8 - 10k resistances
c1- 0.47 micro farat capacitor
c2,c3,c5,c6 - 22pfarat capacitor
c4 - 0.1micro farat capacitor
xtal1 - 3.57 mhz crytal
xtal2 - 12mhz crystal
s1 - push to on switch
m1,m2 - 6v 50rpm motor
batt- 6v
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plz reply soon
(or mail me at littlegenius95@gmail.com)
couldnt see the numbers written before on the not gates
this is my id
zealotzshams@hotmail.com
If you want to rotate it than connect a dc motor vertically and fit camera on it move that motor with the signal coming from microcontroller.
To know how to build mobile controlled robot and its program you can refer to my blog robolabz.mutiply.com
so we can locate the position using a computer
the diode is a silicon diode so a drop of 0.7V will be their and the controller gets around 5.3V,which is sufficient for it.........
i saw your project at instructables.com,
its amaizing project i like it.
can u send me this project's report or documentation of this project ?
please mail to vijapurnikhil@yahoo.co.in