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# Strandtest
---
This script just does some fancy patterns to show of the neopixels' capabilities.
Runs in an endless loop, take a look at the code to see what it does more
precisely.
```Python
import LuxcenaNeo as neo # Can be imported as LuxcenaNeo as well. but anything else and it will fail...
import time
def colorWipe(color, wait_ms=50):
"""Wipe color across display a pixel at a time."""
for i in range(neo.strip.numPixels()):
neo.strip.setPixelColor(i, color)
neo.strip.show()
time.sleep(wait_ms/1000.0)
def theaterChase(color, wait_ms=50, iterations=10):
"""Movie theater light style chaser animation."""
for j in range(iterations):
for q in range(3):
for i in range(0, neo.strip.numPixels(), 3):
neo.strip.setPixelColor(i+q, color)
neo.strip.show()
time.sleep(wait_ms/1000.0)
for i in range(0, neo.strip.numPixels(), 3):
neo.strip.setPixelColor(i+q, 0)
def wheel(pos):
"""Generate rainbow colors across 0-255 positions."""
if pos < 85:
return neo.Color(pos * 3, 255 - pos * 3, 0)
elif pos < 170:
pos -= 85
return neo.Color(255 - pos * 3, 0, pos * 3)
else:
pos -= 170
return neo.Color(0, pos * 3, 255 - pos * 3)
def rainbow(wait_ms=20, iterations=1):
"""Draw rainbow that fades across all pixels at once."""
for j in range(256*iterations):
for i in range(neo.strip.numPixels()):
neo.strip.setPixelColor(i, wheel((i+j) & 255))
neo.strip.show()
time.sleep(wait_ms/1000.0)
def rainbowCycle(wait_ms=20, iterations=5):
"""Draw rainbow that uniformly distributes itself across all pixels."""
for j in range(256*iterations):
for i in range(strip.numPixels()):
neo,strip.setPixelColor(i, wheel(((i * 256 / neo.strip.numPixels()) + j) & 255))
neo.strip.show()
time.sleep(wait_ms/1000.0)
def theaterChaseRainbow(wait_ms=50):
"""Rainbow movie theater light style chaser animation."""
for j in range(256):
for q in range(3):
for i in range(0, neo.strip.numPixels(), 3):
neo.strip.setPixelColor(i+q, wheel((i+j) % 255))
neo.strip.show()
time.sleep(wait_ms/1000.0)
for i in range(0, neo.strip.numPixels(), 3):
neo.strip.setPixelColor(i+q, 0)
class Main(neo.NeoBehaviour):
def onStart(self):
# Change the brightness of the strip
neo.strip.setBrightness(100)
# Do an endless loop with some default neopixel test patterns
while True:
colorWipe(neo.Color(255, 0, 0)) # Red wipe
colorWipe(neo.Color(0, 255, 0)) # Blue wipe
colorWipe(neo.Color(0, 0, 255)) # Green wipe
theaterChase(neo.Color(127, 127, 127)) # White theater chase
theaterChase(neo.Color(127, 0, 0)) # Red theater chase
theaterChase(neo.Color( 0, 0, 127)) # Blue theater chase
rainbow()
rainbowCycle()
theaterChaseRainbow()
```
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