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#1
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Re: small superbright green LED panels?
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#2
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Re: small superbright green LED panels?
The LED. They need something with good thermal conductivity to keep pulling the heat out of them. But that can be as easy as mounting it against some aluminum.
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#3
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Re: small superbright green LED panels?
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These baby's get hot enough to make you think twice before touching them a second time! |
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#4
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Re: small superbright green LED panels?
Dave, we used the white version of those LEDs on our underwater ROV Babs. They work pretty well. Heat sink...we want a heat sink..but we have some aluminum we can use to make that.
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#5
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Re: small superbright green LED panels?
What did you use to mount it? As far as I can tell, they don't have any mounting holes per-se. Presumably you'd want something that is a good thermal conductor. I could see using bolts through the cutouts in the star, but I'd be worried about putting stress on the PCB that way. Or zip ties through the star loops and thermal paste between the PCB and the aluminum?
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#6
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Re: small superbright green LED panels?
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#7
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Re: small superbright green LED panels?
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#8
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Re: small superbright green LED panels?
We used 4-40 screws with a nylon washer under it, and insluating material between the aluminum LED base, and the chunk of aluminum they are attached to. This is in Babs, aka Stanford in the movie Spare Parts.
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#9
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Re: small superbright green LED panels?
Can anyone explain how to connect the LED driver to the RoboRio?
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#10
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Re: small superbright green LED panels?
get a Spike relay, and use it to switch power on or off, if that's what you are trying to do.
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#11
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Re: small superbright green LED panels?
Spikes are no longer sold - so long as you are not using it to control motors or other actuators, you can get an off the shelf relay for controlling any sort of lights on your bot.
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#12
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Re: small superbright green LED panels?
Thanks for the update on Spikes...we have been using them for a long time, and have plenty, so I wasn't aware that you can't buy them.
Also interesting about the power supply, that makes life easy |
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#13
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Re: small superbright green LED panels?
Depending on the current draw, you may be able to use the PCM to power these. I'd have to verify the legality of that for a competition robot thought. I believe the PCM can source around .6 amps for relays.
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#14
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Re: small superbright green LED panels?
The RIO won't be able to provide enough current to drive one of these directly. If you want the ability to turn the LED on and off, you'll need to use a relay module. The only legal one is the Spike. IF you're not worried about that current draw, you can just plug them straight into the PDP.
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#15
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Re: small superbright green LED panels?
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Because the driver is a constant current source, you can provide power to it directly from the PDB, there is no need to use a VRM to power it. The connection to the RoboRIo is as simple as connecting the "CTRL" (D+), these are the dimmer inputs, input on the LED Driver to a digital out on the RoboRio. There is no need to connect the "DGND"(D-) as GND is provided by the power GND. Setting the digital output low turns the LED off, and high turns it on. EASY PEAZY! |
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