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beijing_strbow 07-02-2017 17:05

LED Strip Issues
 
We're trying to put LED strips on our robot to signal various things to the drivers, as well as improve the look of our robot. We're using this strip

https://www.adafruit.com/products/2440, with these MOSFETs on the signal wires:

https://www.adafruit.com/product/355

We're trying to power it off of the roboRIO PWM outputs, but we're getting a weird issue where the LEDs are rapidly flashing at a lower-than-full brightness. My thought when this originally happened was that it was because our power ground wasn't connected to the signal ground (we're powering them directly from the VRM, while signal is from the roboRIO PWM pins), so we fixed that but they still don't work.

Smalls1625 07-02-2017 17:21

Re: LED Strip Issues
 
Quote:

Originally Posted by beijing_strbow (Post 1641748)
We're trying to put LED strips on our robot to signal various things to the drivers, as well as improve the look of our robot. We're using this strip

https://www.adafruit.com/products/2440, with these MOSFETs on the signal wires:

https://www.adafruit.com/product/355

We're trying to power it off of the roboRIO PWM outputs, but we're getting a weird issue where the LEDs are rapidly flashing at a lower-than-full brightness. My thought when this originally happened was that it was because our power ground wasn't connected to the signal ground (we're powering them directly from the VRM, while signal is from the roboRIO PWM pins), so we fixed that but they still don't work.

How we did it last year was off the PCM,I believe. You can then program each of the colors as a solenoid.

beijing_strbow 07-02-2017 18:31

Re: LED Strip Issues
 
Quote:

Originally Posted by Smalls1625 (Post 1641758)
How we did it last year was off the PCM,I believe. You can then program each of the colors as a solenoid.

Yeah, we could run it off of the DIO pins, but we'd like to have more colors available than that.


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