*: initial toying with gpiozero python3

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

.gitignore

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+*~

README.md

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 # bathroom-timer
 
+Problem: the kids take showers or are "on the can" for longer than 30min.
+
+Solution: make an alarm that goes off when the door has been closed for 30min.
+
+## Notes
+
+Started with this kit: [Huzzah! Adafruit.io Internet of Things Feather ESP8266 - WiFi Starter Kit](https://www.adafruit.com/product/2680)
+
+But I needed a clock to measure 30min, so I am now using an old, low-voltage RPI Model A+ v1.1.
+
+Still considering the solder kit: [Ladyada's Electronics Toolkit](https://www.adafruit.com/product/136)
+
+- [python GPIO zero](https://gpiozero.readthedocs.io/en/latest/installing.html)
+- [MagPI article on programming GPIO on the RPI](https://raw.githubusercontent.com/raspberrypipress/released-pdfs/main/simple-electronics-with-gpio-zero.pdf)
+

blink.py

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+#!/usr/bin/env python3
+
+from gpiozero import LED
+from time import sleep
+
+led = LED(25)
+
+while True:
+    led.on()
+    sleep(1)
+    led.off()
+    sleep(1)
+

button.py

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+#!/usr/bin/env python3
+
+from gpiozero import LED
+from gpiozero import Button
+from time import sleep
+
+led = LED(25)
+button = Button(21)
+
+def pressed():
+    led.on()
+    print("button pressed. LED on")
+
+def released():
+    led.off()
+    print("button released. LED off")
+
+button.when_pressed = pressed
+button.when_released = released
+print("ready")
+
+while True:
+    sleep(0.2)
+
+

door.py

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+#!/usr/bin/env python3
+
+from gpiozero import Button, Buzzer
+from time import sleep
+from datetime import datetime
+
+# https://docs.python.org/3/library/datetime.html#datetime.datetime.now
+
+# the door sensor
+door = Button(23)
+btn = Button(19)
+bz = Buzzer(26)
+#bz.on()
+#bz.off()
+
+def alarm():
+    bz.beep(0.5,0.25,8)
+
+def doorClosed():
+    t = datetime.now()
+    print(f"{t} - door closed. LED on")
+
+def doorOpen():
+    t = datetime.now()
+    print(f"{t} - door open. LED off")
+
+def whenPressed():
+    bz.toggle()
+
+btn.when_pressed = whenPressed
+door.when_pressed = doorClosed
+door.when_released = doorOpen
+
+print("ready")
+
+while True:
+    sleep(0.2)
+
+