Add Proximity Light code

Author: dastels

Proximity_Light/LICENSE

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+MIT License
+
+Copyright (c) 2018 Dave Astels
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Proximity_Light/main.py

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+import time
+import board
+import busio
+import neopixel
+import adafruit_vl53l0x
+
+TRIGGER_DISTANCE = 500          # number of mm where the light toggles
+NEOPIXEL_PIN = board.D1
+NUMBER_OF_PIXELS = 8
+
+i2c = busio.I2C(board.SCL, board.SDA)
+sensor = adafruit_vl53l0x.VL53L0X(i2c)
+
+strip = neopixel.NeoPixel(NEOPIXEL_PIN, NUMBER_OF_PIXELS, brightness=1.0, auto_write=False)
+
+strip.fill((0, 0, 0))
+for i in range(NUMBER_OF_PIXELS):
+    strip[i] = (64, 64, 64)
+    strip.show()
+    time.sleep(0.1)
+    strip[i] = (0, 0, 0)
+    strip.show()
+
+while True:
+    if sensor.range < TRIGGER_DISTANCE:
+        strip.fill((255, 255, 255))
+        strip.show()
+    else:
+        strip.fill((0, 0, 0))
+        strip.show()
+    time.sleep(0.1)