Initial commit

control.py

@@ -0,0 +1,72 @@
+from neopixel import NeoPixel
+from random import randrange
+import time
+import board
+from gpiozero import LED
+
+# ------------------------------------------------------------------------------
+# Control script for 3D printer fan & LED control
+#
+#
+# Raspi Zero W Pin assignment, in order from top to bottom on PCB
+#
+#  On PCB  |  Cable color    |  Raspberry PIN
+# --------------------------------------------
+#  5V      |  not connected  |  ------
+#  LED     |  grey           |  GPIO 19 [PWM]
+#  GND     |  black          |  ------
+#  DHT22   |  white          |  GPIO 26
+#  FAN1    |  purple         |  GPIO 13
+#  FAN2    |  blue           |  GPIO 6
+#
+
+SETTINGS = {
+    'fan1': board.D13,
+    'fan2': board.D6,
+    'dht': board.D26,
+    'led': board.D19,
+}
+
+fan1 = LED(SETTINGS['fan1'])
+fan2 = LED(SETTINGS['fan2'])
+
+
+def test_leds(sleep_time=0.1, num_leds_on_at_same_time=10, max_brightness=30):
+    num_leds = 120
+    strip = NeoPixel(SETTINGS['led'], n=num_leds, auto_write=False)
+
+    # switch all leds off
+    for i in range(num_leds):
+        strip[i] = (0, 0, 0)
+    strip.show()
+
+    for i in range(num_leds):
+        strip[i] = tuple(randrange(0, max_brightness) for j in range(3))
+        if i - num_leds_on_at_same_time >= 0:
+            strip[i-num_leds_on_at_same_time] = (0, 0, 0)
+        strip.show()
+        time.sleep(sleep_time)
+
+    # switch all leds off again
+    time.sleep(2)
+    for i in range(num_leds):
+        strip[i] = (0, 0, 0)
+    strip.show()
+
+def board_test(fan_on_secs=4):
+  print("Testing fan1")
+  fan1.on()
+  time.sleep(fan_on_secs)
+  fan1.off()
+
+
+  print("Testing fan2")
+  time.sleep(fan_on_secs)
+  fan2.off()
+
+  print("Testing leds")
+  test_leds()
+
+
+if __name__ == "__main__":
+  board_test()