Dotstar 60LED Black 4m
http://adafru.it/2239
P2239B
2018-03-27
I'm having an issue with the strip where one LED on the strip is constantly white and no LEDs after this one work at all. While it is difficult to see due to the camera not picking it up easily; here is a video demonstrating the problem: https://www.youtube.com/watch?v=yqrJdzU1MIo
This issue is present even when running the strandtest dotstar example with an arduino uno with the following setup parameters changed in the default code to allow hardware SPI and the whole strip to be tested:
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#define NUMPIXELS 60 // Number of LEDs in strip
// Here's how to control the LEDs from any two pins:
#define DATAPIN 4
#define CLOCKPIN 5
//Adafruit_DotStar strip = Adafruit_DotStar(NUMPIXELS, DATAPIN, CLOCKPIN, DOTSTAR_BRG);
// The last parameter is optional -- this is the color data order of the
// DotStar strip, which has changed over time in different production runs.
// Your code just uses R,G,B colors, the library then reassigns as needed.
// Default is DOTSTAR_BRG, so change this if you have an earlier strip.
// Hardware SPI is a little faster, but must be wired to specific pins
// (Arduino Uno = pin 11 for data, 13 for clock, other boards are different).
Adafruit_DotStar strip = Adafruit_DotStar(NUMPIXELS, DOTSTAR_BRG);
I am supplying the LEDs with power from a 10A 5V adaptor that appears to be working fine. I have also checked the voltage at the end of the strip between the ground and positive wires, and there is a 5V DC difference so the power is being applied correctly throughout the entire strip. The first set of LEDs light up successfully so I am certain that the clock and data pins are plugged in correctly.
Is there anything you can suggest me doing to attempt to solve my problem? Or will the strip have to be replaced in full?
Thanks and kind regards,
Alex