Thread: Relay I/O Current
View Single Post
  #6   Spotlight this post!  
Unread 08-02-2011, 12:26
Matt Krass's Avatar
Matt Krass Matt Krass is offline
"Old" and Cranky. Get off my lawn!
AKA: Dark Ages
FRC #0263 (Sachem Aftershock)
Team Role: Mentor
  
Join Date: Oct 2002
Rookie Year: 2002
Location: Long Island, NY
Posts: 1,187
Matt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond reputeMatt Krass has a reputation beyond repute
Send a message via AIM to Matt Krass
Re: Relay I/O Current
Quote:
Originally Posted by Al Skierkiewicz View Post
Matt,
The TI device that drives the relay outputs is speced at 16ma max source/sink per output. The relay outputs then have a 680 resistor in series with the output and parallel feed another resistor and low current LED at about 5ma.
Sorry, badly phrased, I was referring to the DIO pins, not the relay outputs. I read your post as saying neither the DIO pins OR the Relay outputs were capable of driving an LED.

Sorry for any confusion,
Matt
__________________
Matt Krass
If I suggest something to try and fix a problem, and you don't understand what I mean, please PM me!

I'm a FIRST relic of sorts, I remember when we used PBASIC and we got CH Flightsticks in the KoP. In my day we didn't have motorized carts, we pushed our robots uphill, both ways! (Houston 2003!)