Merge branch 'master' of https://github.com/cogliano/Adafruit_Learning_System_Guides

Author: cogliano

PMS5003_Air_Quality_Sensor/PMS5003_CircuitPython/main.py renamed to PMS5003_Air_Quality_Sensor/PMS5003_CircuitPython/PMS5003_example.py

@@ -1,18 +1,22 @@
-import board
-import busio
-from digitalio import DigitalInOut, Direction
-
 try:
     import struct
 except ImportError:
     import ustruct as struct
 
-led = DigitalInOut(board.D13)
-led.direction = Direction.OUTPUT
-
-# Connect the Sensor's TX pin to the board's RX pin
+# Connect the sensor TX pin to the board/computer RX pin
+# For use with a microcontroller board:
+import board
+import busio
 uart = busio.UART(board.TX, board.RX, baudrate=9600)
 
+# For use with Raspberry Pi/Linux:
+# import serial
+# uart = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=0.25)
+
+# For use with USB-to-serial cable:
+# import serial
+# uart = serial.Serial("/dev/ttyUSB0", baudrate=9600, timeout=0.25)
+
 buffer = []
 
 while True:

TFT_Gizmo_Turtle_Graphics/turtle_snowflakes.py

@@ -0,0 +1,48 @@
+# Turtle Gizmo Snowflakes
+#==| Turtle Gizmo Setup start |========================================
+import time
+from random import randint
+import board
+import busio
+import displayio
+from adafruit_st7789 import ST7789
+from adafruit_turtle import turtle
+displayio.release_displays()
+spi = busio.SPI(board.SCL, MOSI=board.SDA)
+display_bus = displayio.FourWire(spi, command=board.TX, chip_select=board.RX)
+display = ST7789(display_bus, width=240, height=240, rowstart=80,
+                 backlight_pin=board.A3, rotation=180)
+turtle = turtle(display)
+#==| Turtle Gizmo Setup end |=========================================
+
+def draw_arm():
+    turtle.pendown()
+    for angle, length in arm_data:
+        turtle.forward(length)
+        turtle.left(angle)
+        turtle.forward(length)
+        turtle.backward(length)
+        turtle.right(2*angle)
+        turtle.forward(length)
+        turtle.backward(length)
+        turtle.left(angle)
+    turtle.penup()
+
+def draw_flake(arms):
+    turtle.penup()
+    turtle.home()
+    turtle.clear()
+    angle = 0
+    delta_angle = 360 // arms
+    for _ in range(arms):
+        turtle.home()
+        turtle.setheading(angle)
+        draw_arm()
+        angle += delta_angle
+    turtle.penup()
+    turtle.home()
+
+while True:
+    arm_data = [(randint(30, 80), randint(10, 40)) for _ in range(5)]
+    draw_flake(randint(5, 8)) #adjust number of arms here
+    time.sleep(5)