Merge pull request adafruit#1196 from dherrada/master

Added astrophotography tracker code

Author: brentru

Astrophotography_Tracker/code.py

@@ -0,0 +1,27 @@
+import time
+import board
+import digitalio
+
+worm_ratio = 40/1
+belt_ratio = 100/60
+gear_ratio = worm_ratio * belt_ratio
+
+steps = 200 # Steps per revolution
+microsteps = 64 # Microstepping resolution
+total_steps = steps * microsteps # Total microsteps per revolution
+
+wait = 1/ ((gear_ratio * total_steps) / 86400)
+
+step = digitalio.DigitalInOut(board.D6)
+direct = digitalio.DigitalInOut(board.D5)
+
+step.direction = digitalio.Direction.OUTPUT
+direct.direction = digitalio.Direction.OUTPUT
+
+direct.value = True
+
+while True:
+    step.value = True
+    time.sleep(0.001)
+    step.value = False
+    time.sleep(wait - 0.001)