Add more ledboard examples

docs/examples/led_board_2.py

@@ -1,5 +1,9 @@
 from gpiozero import LEDBoard
+from time import sleep
 
-leds = LEDBoard(5, 6, 13, 19, 26, pwm=True)
+leds = LEDBoard(5, 6, 13, 19, 26)
 
-leds.value = (0.2, 0.4, 0.6, 0.8, 1.0)
+for led in leds:
+    led.on()
+    sleep(1)
+    led.off()

docs/examples/led_board_3.py

@@ -0,0 +1,8 @@
+from gpiozero import LEDBoard
+from signal import pause
+
+leds = LEDBoard(5, 6, 13, 19, 26, pwm=True)
+
+leds.value = (0.2, 0.4, 0.6, 0.8, 1.0)
+
+pause()

docs/examples/led_board_4.py

@@ -0,0 +1,11 @@
+from gpiozero import LEDBoard
+from time import sleep
+
+leds = LEDBoard(2, 3, 4, 5, 6, 7, 8, 9)
+
+leds[0].on()  # first led on
+sleep(1)
+leds[7].on()  # last led on
+sleep(1)
+leds[-1].off()  # last led off
+sleep(1)

docs/examples/led_board_5.py

@@ -0,0 +1,24 @@
+from gpiozero import LEDBoard
+from time import sleep
+
+leds = LEDBoard(2, 3, 4, 5, 6, 7, 8, 9)
+
+for led in leds[3:]:  # leds 3 and onward
+    led.on()
+sleep(1)
+leds.off()
+
+for led in leds[:2]:  # leds 0 and 1
+    led.on()
+sleep(1)
+leds.off()
+
+for led in leds[::2]:  # even leds (0, 2, 4...)
+    led.on()
+sleep(1)
+leds.off()
+
+for led in leds[1::2]:  # odd leds (1, 3, 5...)
+    led.on()
+sleep(1)
+leds.off()

docs/examples/led_board_6.py

@@ -0,0 +1,11 @@
+from gpiozero import LEDBoard
+from time import sleep
+
+leds = LEDBoard(red=2, green=3, blue=4)
+
+leds.red.on()
+sleep(1)
+leds.green.on()
+sleep(1)
+leds.blue.on()
+sleep(1)

docs/examples/led_board_7.py

@@ -0,0 +1,15 @@
+from gpiozero import LEDBoard
+from time import sleep
+
+leds = LEDBoard(red=LEDBoard(top=2, bottom=3), green=LEDBoard(top=4, bottom=5))
+
+leds.red.on() ## both reds on
+sleep(1)
+leds.green.on()  # both greens on
+sleep(1)
+leds.off()  # all off
+sleep(1)
+leds.red.top.on()  # top red on
+sleep(1)
+leds.green.bottom.on()  # bottom green on
+sleep(1)