update some code about PWM

PWM_Pulse_Width_Modulation.py

@@ -0,0 +1,17 @@
+from machine import Pin, PWM
+from time import sleep
+
+outPin = 16
+analogOut = PWM(Pin(outPin))
+
+analogOut.freq(1000)
+
+# 0 off // 65535 full on
+# this means 3.3v is devided by 65535, so you can output
+# continuous voltage
+analogOut.duty_u16(0)
+
+while True:
+    myVoltage = float(input('What Voltage Would You Like? '))
+    pwmVal = int((myVoltage / 3.3) * 65535)
+    analogOut.duty_u16(pwmVal)

dimmable_LED.py

@@ -0,0 +1,16 @@
+from machine import PWM, Pin
+from time import sleep
+
+outPin = 16
+analogeOutput = PWM(Pin(outPin))
+analogeOutput.freq(1000)
+
+while True:
+    for i in range(0, 65535, 1000):
+        analogeOutput.duty_u16(i)
+        sleep(.1)
+        
+    for i in range(65535, 0, -1000):
+        analogeOutput.duty_u16(i)
+        sleep(.1)
+        

dimmable_LED_with_a_potentiometer.py

@@ -0,0 +1,16 @@
+from machine import PWM, ADC, Pin
+from time import sleep
+
+input_pin = 28
+output_pin = 16
+
+analog_input = ADC(Pin(input_pin))
+analog_output = PWM(Pin(output_pin))
+
+analog_output.freq(1000)
+
+while True:
+    input_digits = analog_input.read_u16()
+    output_digits = input_digits - 240 if input_digits - 240 >= 0 else 0
+    analog_output.duty_u16(output_digits)
+    sleep(.1)