Forum Replies Created
-
AuthorPosts
-
D.V.G. KrishnaParticipant
hello
buddy
even im not a good programmer
im working on same concept too
recently i came to know that we can handle eeprom
using “eeprom.h” headerfile
include
#include<avr/eeprom.h> (im using winavr ,avr studio4)
this consists of several functions
to write and read data at run time
im still working on it
D.V.G. KrishnaParticipantif you are using SINAPROG to program AVR microcontrollers
it very user friendly
in its window it displays saparate buttons for programmig
fuse bits
D.V.G. KrishnaParticipanti dont know much about ZIGbee
how many channel it can provide
January 10, 2012 at 1:58 am in reply to: How to interface RF transceiver with ATmega16 using HT12E and HT12D #7013D.V.G. KrishnaParticipanthi
you are saying that to transmit 10 digit num
is it binary or decimal ?
actually
HT12E is a 4bit binary encoder
HT12D is a 4bit binary decoder
there are 8bit and 12 bit encoder and decoder are avilable
try “google”
you will get it
if you got 8bit encoder please send me the details of the shop
November 28, 2011 at 6:57 pm in reply to: RF module wireless data transmission without encoder and decoder using 8051. #6885D.V.G. KrishnaParticipanthave you checked the tranmit enable pin low in ht12e ic
you can refer EG lab circuits
October 30, 2011 at 2:38 pm in reply to: program to control the speed of a Servo Motor using potentiometer #6763D.V.G. KrishnaParticipantif u want to control a servo with potentiometer
i think you do not need a microcontroller
you can use 555 timer IC in astable mode
i tried this it is working
choose the R1 and R2 resistance and capasitor values according to your servo, it works.
try in google
555ic.com(i forgot exact name)
the circuit is vary simple
refer the following BOOK
“PRACTICAL ELECTRONICS FOR INVENTORS”
D.V.G. KrishnaParticipanti tried using VS1 servo motors from vegarobokits
but the motors are not working up to the mark
i need a prefect servo
i made a servo tester using 555 timer ic but it is not working with this servo
so
anay body suggest me any servo controller at very low cost
August 13, 2011 at 4:36 pm in reply to: wireless remote controlled car without the use of microcontroller #6606D.V.G. KrishnaParticipantto make a car ther is no need of microcontril
you connect D0,D1,D2,D3pins of ht12d
decoder to L293d motor driver
her all pins are by default HIGH
to move forward or backward you need to press
two switches simultaniously
i tried it and its working
use the circuit in EGLABS
connect d0,d1,d2,d3 to L293Dmotor driver
instd of leds
use this
http://www.engineersgarage.com/electronic-circuits/wireless-rf-remote-control-circuit
D.V.G. KrishnaParticipanti want ti interface an IR sensor to atmega16
the sensor is active high
if i write
DDRD=0x00;
PORTD=0xff;
the pins will be by default high
when sensor detects object it gives high
the mc cannot detact a change in input
can i write PORTD=0x00;
what will happen?????????
D.V.G. KrishnaParticipantim using usb programmer from robotech labs
im not using uart or twi
July 24, 2011 at 5:05 pm in reply to: rf control toy car working …and doubt on its circuit and i ant get 5v battery and 750k resistor #6512D.V.G. KrishnaParticipant********first’1′-************–
u canot find a 5 volt battery
insted u can use a 7805 regulator ic and
9v battery as input
it will give you 5volt suppluy
*******second*********
u will never find axact 750K resistor
so you can use “preset”(small potentiometer)
or
use 680K and 68K resistors in series.
i prefer you to study the the book
“practical electronics for inventors”
you can find it free pdf online
D.V.G. KrishnaParticipantthanks for your reply
my doubt is
how to stop water entering throuh
shaft of servo motor
in some vedios i saw that they r opening servo and applying greez to gares and
plastic on circuit
if u hav any idea about it please tell me
and another problem is i need a battery
that can drive up to six 2kg torque servos
D.V.G. KrishnaParticipantu can use RF modules
and
HT12E encoder ic
HT12D decoder ic
u need a motor driver
L293D
connect the (d0,d1,d2,d3)pins of decoder to the
control pins of motor driver
u can control 2 motors with L293D driver
refer to the EGLAB column circuits
D.V.G. KrishnaParticipanti’m using 555 ic to generate appropriate pwm wave form
it is working good
here im not using any mc
i want to know is can i connect 3rd pin of 555 to
tx and rx to the servo
D.V.G. KrishnaParticipanti got it
the problem is not with the mc
the problm is with the rs232 cable used for interfacing
i used 9 pin cable then it worked
when i pressed the reset button the popup box just disappeared and code was dumped into mc
so i prefer 9 pin cable insted of rs232
-
AuthorPosts