Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Joker94 on December 15, 2009, 02:30:14 AM

Title: Adding an led to $50 robot
Post by: Joker94 on December 15, 2009, 02:30:14 AM

Hi

can i use the snsor bus power to power and LED.  I would assume to use a resisotr and all but all i want to clarify is will it damage my robot.

The reason i am being so carefull was due to my last run in with my power problem.

Thanks Joker94

Title: Re: Adding an led to $50 robot
Post by: GearMotion on December 15, 2009, 06:18:49 AM

Yes. Actually any of the pins could be set to output to drive the LED.

Title: Re: Adding an led to $50 robot
Post by: Joker94 on December 15, 2009, 04:41:55 PM

great thenks for that  ;D

Title: Re: Adding an led to $50 robot
Post by: rollingrobot on December 15, 2009, 05:03:25 PM

There is no point in taking room of a pin, just put it on the side of extra holes in your PCB and solder it under the board. Unless you want to actually control it, that is a different story. I don't understand your question entirely, do you want to be able to control it?

Title: Re: Adding an led to $50 robot
Post by: Joker94 on December 15, 2009, 05:12:30 PM

 No sorry, i dont want to control it i just want to use the power from the sensor bus. It is for the automated putting ball return i am making and i just need a powered led, and to save having cable running every where and the fact that i have 6 sensor buses and only need 2 at the most for this project i figured i'll use and on board power source.

and i suppose i could do the same with the servo power to?

Title: Re: Adding an led to $50 robot
Post by: rollingrobot on December 15, 2009, 05:33:37 PM

Just remember the voltage for each bus and use the correct resistor  ;)

Title: Re: Adding an led to $50 robot
Post by: Joker94 on December 15, 2009, 05:45:02 PM

done that :D, used one of those resistor clculators.