I am making a line follower with arduino
so here is my setup
moter driver have 8 pins for
now some strange stuff
when i attach grd then every thing is okey but when i attach vcc it takes power which is provided for motor to arduino. i dont know arduino runs or lit up led only
second thing is when i pwm pins it light up sensors and ALL led ( exept pin 13) pwr tx and rx and sensors which are taking power from 5v and gnd on arduino
when i attach pwm nothing works
please anybody help me
when i attach grd then every thing is okey but when i attach vcc it takes power which is provided for motor to arduino
What is "grd"?
Could you maybe rephrase your question, post a sketch, show a schematic?
As above although it does sound like you're trying to run 5 motors from the arduino?
now its okey. when i power motor driver it lit up arduino led but not arduino
But main problem is i can power teds for sensor they are dim when powered with 9 v no problem in usb
Its problem when there are more than 2 sensors
is there problem arduino for providing power
is it possible to provide power to arduino throgh it 5v pin because when i connect vcc pin to arduino then arduino start up. And circuit can i run without connecting both ground
Main thing is please suggest that do i need to provide seprate power to sensors
No sorry, it isn't making any sense.
You don't say what the sensors are, though unless they're taking an awful lot of current, it seems unlikely they're causing problems.
A schematic would be a great help.
Have you got grounds connected?
Have you double and triple checked your wiring?
Could this be a decoupling problem?