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Unread 04-02-2012, 16:36
sand500 sand500 is offline
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Spike Red Light?

I have one of the Innovation First Spikes hooked up to the PD board. Nothing else is connected to the spike, nothing to the M+ and M- and nothing to the pwm port.

When I turn on the robot, the spike has a solid red light.
According to the User Guide for the spike, red means reverse. However, if I take a multimeter to the M+ and M- terminals, i get 0V

When I take the multimeter to the 12V and GND terminals, I get 12V so the spike is definitely getting power. And definitely no chance of reverse polarity because 12V terminal is connected to the red on the PDB and GND is connected to black on the PDB.
Also, fuse looks intact.

I am really puzzled by this and I hope you guys can help.
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Unread 04-02-2012, 16:50
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Re: Spike Red Light?

I seem to remember getting a solid red light with no PWM cable attached, but I can't say for sure. See if the light goes out when you plug the PWM cable in to the Relay port on the Digital Sidecar.
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Unread 04-02-2012, 16:58
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Re: Spike Red Light?

Quote:
Originally Posted by RufflesRidge View Post
I seem to remember getting a solid red light with no PWM cable attached, but I can't say for sure. See if the light goes out when you plug the PWM cable in to the Relay port on the Digital Sidecar.
Nope, they dont change color.
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Unread 04-02-2012, 17:02
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Re: Spike Red Light?

Have you tired a different spike and got the same problems?
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Unread 04-02-2012, 17:53
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Re: Spike Red Light?

Quote:
Originally Posted by Trez View Post
Have you tired a different spike and got the same problems?
we have 3 spikes and they all do the same thing.
2 are innovation first, one is the vex pro one.

Is it maybe because we aren't sending it a signal?

The B on the spike PWM port is where the GND of the PWM cable goes right?
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Unread 04-02-2012, 18:02
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Re: Spike Red Light?

When the spike outputs +12V, the LED will be green. When it outputs -12V, the LED will be red. It will be yellow when it outputs 0V.

But IIRC, the light is red when it doesn't have signal.
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Unread 04-02-2012, 18:20
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Re: Spike Red Light?

Note that Spike Relays do NOT get connected to PWM outputs on the Digital Sidecar; instead they must be connected to "Relay" outputs. And yes, B indicates Black (Ground)

Also, actually remove the fuse and check it, or measure its continuity.
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Unread 04-02-2012, 18:57
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Re: Spike Red Light?

Quote:
Originally Posted by DonRotolo View Post
Note that Spike Relays do NOT get connected to PWM outputs on the Digital Sidecar; instead they must be connected to "Relay" outputs. And yes, B indicates Black (Ground)

Also, actually remove the fuse and check it, or measure its continuity.
In my experience the "yellow" for no signal looks very red. If it turns green when you set it to forward and red (generally a slightly different red, although I don't think I could say which is which out of context) when you set it to reverse then you're fine.

It sounds like the spike is operating correctly.
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Unread 04-02-2012, 19:37
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Re: Spike Red Light?

Actually, according to the user guide on the IFI website, the OFF state with both M+ & M- at ground is indicated by the LED glowing orange.
Is the LED really red or does it look somewhat orange?
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Unread 04-02-2012, 19:42
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Re: Spike Red Light?

I'd vote that the neutral color of the signal light just happens to appear to be a shade of orange/red.
We have debates about what color the real neutral shade is all the time.

The fuse is also good if you have a light. It goes out altogether if there's no fuse. The Spike circuits are protected by the fuse.
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Unread 04-02-2012, 21:05
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Re: Spike Red Light?

Quote:
Originally Posted by BitTwiddler View Post
Actually, according to the user guide on the IFI website, the OFF state with both M+ & M- at ground is indicated by the LED glowing orange.
Is the LED really red or does it look somewhat orange?
I guess you could say it is orange.
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Unread 05-02-2012, 12:45
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Re: Spike Red Light?

Quote:
Originally Posted by sand500 View Post
I guess you could say it is orange.
Then it's definitely that you have a lack of signal. If when you connect a motor, or whatever your desired application is, and apply a signal, you should see green/red lights. Seems like you're okay.
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Unread 20-02-2012, 13:52
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Re: Spike Red Light?

I know for our team we have one or two spikes whose "orange" is actually a bit more red than I would really like. Other than that, they work fine. Try using them, they should still work perfectly.
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Unread 20-02-2012, 23:14
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Re: Spike Red Light?

Spikes are a very random moor controller. The fuse can be intact, the PWM can be plugged into the correct relay slot, and a light may appear, but sometimes it just refuses to work. Our team has a LOT of OLD spikes and a few, that were tested, work so far without any indication. I know this because tested the same spike and compared I with the new VEX spike by changing the Relay PWMs to the new spike and got a signal. So if the problem persists, just keep testing to your heart's content.

Hope his helped and Happy Competitions!
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Unread 25-02-2012, 21:10
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Re: Spike Red Light?

Light is usually orange when powered up. We had a red light on one of our spikes when we powered up, pulled out the pwm to find it melted. Yeah, it smelled bad and was toast. Don't know for sure if the red light was indicating a fault, but I'd put a small amount of money on it.
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