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How to use SPI with AVR.mp4

on November 14, 2014

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How to use two servo motors simultaneously in opposite directions.

Controling of two servo motors : when we work on Servo ,in most of the cases a challenge comes with arduino that how t o work on two different servo motors simultaneously in opposite direction rotations . I have used one solution .now available here . in servo motor we use gears and DC motor . if we think in deep then dc motor is capable to work on CW and CCW directions . following are the steps which I have used .: · from two servo choose any one and open it from back side with the help of screw driver . · change the motor wire with each other ( 1st wire will replace 2nd wire and 2nd will replace 1st ) · now change the 1st and 3rd pin connection of servo potentiometer with each other ,if you want to change it . This is the direct solution to operate both servos in opposite directions on single time . interfacing with arduino : make any one GPIO pin as output for arduino . · let suppose we are takin

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Init.d Script File What is init directory ? I nit is the parent of all processes on the system, it is executed by the kernel and is responsible for starting all other processes; it is the parent of all processes whose natural parents have died and it is responsible for reaping those when they die. Steps used to make init script fie: I. login to root user command: sudo su password: system password give 2. Now go to the init.d directory. Command : cd /etc/init.d 3. using vi /gedit editor write a script file with extension .sh. command : vi anil.sh "WELCOME TO EmbeddedForus " 4. For use as script file do the following changes . #!/bin/sh echo " " echo "WELCOME To EmbeddedForus " echo " " 5. Save the file Command : :wq 6. Execute the script f

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Basic steps used to install Tool chains of ARM and AVR http://www.ethernut.de/en/documents/cross-toolchain-osx.html download X code from this link. Installing xcode $ gcc –version If the response is similar to powerpc-apple-darwin9-gcc-4.0.1 (GCC) 4.0 then GCC is already available and probably there is no need to install it again. However, if the response is -bash: gcc: command not found,,,,,,,,,, then GCC is already available and probably there is no need to install it again. However, if the response is-bash: gcc: command not found. Download tool chain sources: $ makdir toolchain cd toolchain Now use the following commands to download the sources. $ curl -O ftp://gcc.gnu.org/pub/binutils/releases/binutils-2.18.tar.bz2 $ curl -O ftp://gcc.gnu.org/pub/gcc/releases/gcc-4.2.2/gcc-core-4.2.2.tar.bz2 $ curl -O ftp://gcc.gnu.org/pub/gcc/releases/gcc-4.2.2/gcc-g++-4.2.2

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Steps use to execute c code on Embedded Linux platform Open Terminal: login to Super user : sudo su password: system password make a folder on Desktop : (Location where you want to make) cd Desktop/ mkdir abc cd abc make .c file using your vi editor or gedit editor: vi 1stfile.c or gedit 1stfile.c compile the code : gcc -o foldername file.c check the output: ./foldername or ./a.out Posted by Embeddedforus

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How to use SPI with AVR.mp4

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