--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ub-timer/main.py	Tue Dec 24 21:36:53 2024 -0800
@@ -0,0 +1,101 @@
+'''
+pin 11 = ws2812 ring
+pin 39 = sw 4
+pin 37 = sw 3
+pin 35 = sw 2
+pin 33 = sw 1
+pin 40 = audio trigger 0
+pin 38 = audio trigger 1
+pin 36 = audio trigger 2
+pin 34 = audio trigger 3
+
+pdm run ampy -p /dev/ttyACM0 put ub-timer/ ./ && pdm run ampy -p /dev/ttyACM0 reset --hard
+minicom -b 115200 -D /dev/ttyACM0
+'''
+
+import time
+from machine import Pin
+from neopixel import NeoPixel
+import random
+
+from colorsys_local import hsv_to_rgb
+
+
+def rand_color():
+    value = .1
+    sat = 1
+    hue = random.random()
+    return tuple(int(x * 255) for x in hsv_to_rgb(hue, sat, value))
+
+
+pin = Pin(11, Pin.OUT)
+switch_pin = [
+    Pin(33, Pin.IN, Pin.PULL_UP),
+    Pin(35, Pin.IN, Pin.PULL_UP),
+    Pin(37, Pin.IN, Pin.PULL_UP),
+    Pin(39, Pin.IN, Pin.PULL_UP),
+]
+audio_trigger = [
+    Pin(40, Pin.OUT, value=1),
+    Pin(38, Pin.OUT, value=1),
+    Pin(36, Pin.OUT, value=1),
+    Pin(34, Pin.OUT, value=1),
+]
+song_duration = [
+    121.47,
+    2.16,
+    1,
+    1,
+]
+num_leds = 12
+np = NeoPixel(pin, num_leds)
+audio_start_ms = 1
+audio_end_ms = 0
+last_sw_pressed = [0, 0, 0, 0]
+
+
+def startAudio(index, now):
+    global audio_start_ms, audio_end_ms
+    audio_trigger[index].value(0)
+    audio_start_ms = now
+    audio_end_ms = now + song_duration[index] * 1000
+    for fr in range(num_leds):
+        np[fr] = rand_color()
+        np.write()
+        time.sleep(.02)
+    audio_trigger[index].value(1)
+
+
+def rand_fill(start):
+    for fr in range(num_leds):
+        if fr > start:
+            np[fr] = rand_color()
+        else:
+            np[fr] = (0, 0, 0)
+    np.write()
+
+
+def scan_buttons(now):
+    for index in range(4):
+        pressed = not switch_pin[index]()
+        if pressed != last_sw_pressed[index]:
+            last_sw_pressed[index] = pressed
+            if pressed:
+                startAudio(index, now)
+
+
+def update_leds(now):
+    frac = (now - audio_start_ms) / (audio_end_ms - audio_start_ms)
+    if 0 < frac < 1:
+        cur = max(0, min(11, int(frac * num_leds)))
+        rand_fill(cur)
+    else:
+        np.fill((0, 0, 0))
+        np.write()
+
+
+while True:
+    now = time.ticks_ms()
+    update_leds(now)
+    scan_buttons(now)
+    time.sleep(.05)