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README.md

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+[Adafruit Circuit Playground Bluefruit](https://learn.adafruit.com/adafruit-circuit-playground-bluefruit) motion-sensitiuve "bling".
+The RGB levels of neopixels around the circuit are affected by X/Y/Z acceleration.
+
+Controls:
+
+ *  slider switch: normal/standby mode
+ *  button a: increase brightness
+ *  button b: decrease brightness
+
+Physical design by [Impulsiva](https://www.impulsiva.com/)
+
+![Movalite](movalite.jpg)

code.py

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+"""
+Movalite by The Dod:
+Adafruit CircuitPlayground Bluefruit motion-sensitiuve "bling"
+The RGB levels of neopixels around the circuit are affected
+by X/Y/Z acceleration
+
+Controls:
+    slider switch: normal/standby mode
+    button a: increase brightness
+    button b: decrease brightness
+"""
+import math
+import time
+from adafruit_circuitplayground import cp
+
+NUM_PIXELS = 10
+# Like a clock, with connectors at 12 (USB) and 6 (power)
+LED_ANGLES = [
+    i*math.pi/6.0
+    for i in [11, 10, 9, 8, 7, 5, 4, 3, 2, 1]]
+
+minx = miny = minz = -5.0
+maxx = maxy = maxz = 5.0
+
+cp.pixels.brightness = 0.1
+
+is_standby = cp.switch
+last_click = 0
+DEBOUNCE = 0.25
+
+def angles2level(led, val):
+    led_angle = LED_ANGLES[led]
+    val_angle = val * 2.0 * math.pi
+    angle = led_angle - val_angle
+    while angle > 2 * math.pi:
+        angle -= 2*math.pi
+    # the pow() makes sin() values sharper
+    return int(255*pow(math.sin(angle/2), 4))
+
+while True:
+    if time.monotonic() > last_click+DEBOUNCE:
+        if is_standby != cp.switch:
+            is_standby = cp.switch
+            last_click = time.monotonic()
+            if is_standby:
+                for i in range(NUM_PIXELS):
+                    cp.pixels[i] = (0, 0, 0)
+        if cp.button_b:
+            last_click = time.monotonic()
+            cp.pixels.brightness = max(0.05, cp.pixels.brightness*0.9)
+        elif cp.button_a:
+            last_click = time.monotonic()
+            cp.pixels.brightness = min(0.95, 1.0-(1.0-cp.pixels.brightness)*0.9)
+    if not is_standby:
+        x, y, z = cp.acceleration
+        if x < minx:
+            minx = x
+        if y < miny:
+            miny = y
+        if z < minz:
+            minz = z
+        if x > maxx:
+            maxx = x
+        if y > maxy:
+            maxy = y
+        if z > maxz:
+            maxz = z
+        vals = (
+            (x-minx)/(maxx-minx),
+            (y-miny)/(maxy-miny),
+            (z-minz)/(maxz-minz))
+        for i in range(NUM_PIXELS):
+            cp.pixels[i] = (
+                angles2level(i, vals[0]),
+                angles2level(i, vals[1]),
+                angles2level(i, vals[2]))
+    time.sleep(0.01)