Merge pull request #162 from ladyada/master

beep boop physics!

Author: ladyada

Crickits/feynman_bot/01.wav

@@ -0,0 +1,85 @@
+# CircuitPython 3.0 CRICKIT demo
+
+from adafruit_seesaw.seesaw import Seesaw
+from adafruit_seesaw.pwmout import PWMOut
+from adafruit_motor import servo, motor
+import audioio
+from busio import I2C
+import random
+import board
+import time
+import gc
+
+i2c = I2C(board.SCL, board.SDA)
+ss = Seesaw(i2c)
+
+print("Feynbot demo!")
+
+#################### 1 Servo
+pwm = PWMOut(ss, 17)
+pwm.frequency = 50
+myservo = servo.Servo(pwm)
+myservo.angle = 180   # starting angle, highest
+
+#################### 2 Drivers
+drives = []
+for ss_pin in (13, 12):
+    _pwm = PWMOut(ss, ss_pin)
+    _pwm.frequency = 1000
+    drives.append(_pwm)
+
+#################### Audio files
+wavfiles = ["01.wav", "02.wav", "03.wav", "04.wav", "05.wav"]
+a = audioio.AudioOut(board.A0)
+
+# Start playing the file (in the background)
+def play_file(wavfile):
+    f = open(wavfile, "rb")
+    wav = audioio.WaveFile(f)
+    a.play(wav)
+
+# Tap the solenoids back and forth
+def bongo(t):
+    for _ in range(t):
+	drives[0].duty_cycle = 0xFFFF
+	time.sleep(0.1)
+	drives[0].duty_cycle = 0
+	time.sleep(0.1)
+	drives[1].duty_cycle = 0xFFFF
+	time.sleep(0.1)
+	drives[1].duty_cycle = 0
+	time.sleep(0.1)
+
+# Move mouth back and forth
+def talk(t):
+    for _ in range(t):
+	 myservo.angle = 150
+	 time.sleep(0.1)
+	 myservo.angle = 180
+	 time.sleep(0.1)
+
+
+filenum = 0 # counter to play all files
+
+while True:
+    gc.collect()
+    print(gc.mem_free())
+
+    # time to play the bongos!
+    bongo(5)
+    time.sleep(1)
+
+    # OK say something insightful
+    play_file(wavfiles[filenum])
+    # and move the mouth while it does
+    while a.playing:
+	talk(1)
+
+    # Done being insightful, take a break
+    time.sleep(1)
+
+    # If we went thru all the files, JAM OUT!
+    filenum += 1   
+    if filenum >= len(wavfiles):
+	bongo(20)
+	filenum = 0