42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
# Copyright 2015 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Demo that shows all the colours of the rainbow."""
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from __future__ import division
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import ser2neo
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import colorsys
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def main():
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port = ser2neo.open_port('/dev/ttyUSB0')
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neo = ser2neo.NeoPixels(port)
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offset = 0
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anim = ser2neo.Animator()
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while anim.run_for(5):
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neo.clear()
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for i in range(neo.nleds):
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hue = offset + i / neo.nleds
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hue %= 1.0
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neo.set(i, ser2neo.RGB(*colorsys.hsv_to_rgb(hue, 1, 0.1)))
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offset += 0.003
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neo.send()
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neo.wait()
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if __name__ == '__main__':
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main()
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