Trinkey Dance Party : fun pulsing colors for NeoTrinkey

trinkey_dance_code.py

# Trinkey dance party
# 2021 @todbot
import time
import board
import neopixel
import random
leds = neopixel.NeoPixel(board.NEOPIXEL, 4, brightness=0.3, auto_write=False)
bpm = 130
ms_per_beat = int(60e3 / bpm / 16)
i=0
while True:
    leds[0:] = [[max(i-8,0) for i in l] for l in leds] # fadeToBlackBy(8)
    leds.show()
    i = (i+1) % ms_per_beat
    if i==0:
        leds[0:] = [int(random.random() * 2**24) for l in leds] # each LED gets new random color
    time.sleep(0.01)  

How would you write this script so that pushing the buttons increases and decreases the BPM?

How would you write this script so that pushing the buttons increases and decreases the BPM?

Here's how I would do that today:

# Trinkey dance party, now with changeable BPM
# 16 Jan 2023 - @todbot / Tod Kurt
#
import time, random, board, neopixel, rainbowio, touchio

leds = neopixel.NeoPixel(board.NEOPIXEL, 4, brightness=0.3, auto_write=False)
touch1 = touchio.TouchIn(board.TOUCH1)
touch2 = touchio.TouchIn(board.TOUCH2)

bpm = 130
i=0
while True:
    ms_per_beat = int(60e3 / bpm / 16)
    leds[0:] = [[max(i-8,0) for i in l] for l in leds] # same as "fadeToBlackBy(8)"
    leds.show()
    i = (i+1) % ms_per_beat
    if i==0:  # at the beat, each LED gets new random color
        leds[0:] = [rainbowio.colorwheel(random.random()*255) for l in leds]
    # touch pads change BPM up or down
    if touch1.value:
        bpm = bpm - 1
    if touch2.value:
        bpm = bpm + 1
    if touch1.value and touch2.value:  # reset BPM if both are touched
        bpm = 130

    time.sleep(0.01)

Thanks, this is great! Much appreciated. I'm getting started with simple coding and this has been really helpful. ae.

…

On Mon, Jan 16, 2023 at 11:30 PM Tod Kurt ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ How would you write this script so that pushing the buttons increases and decreases the BPM? Here's how I would do that today: Trinkey dance party, now with changable BPM# 16 Jan 2023 - @todbot / Tod Kurt#import time, random, board, neopixel, rainbowio, touchio leds = neopixel.NeoPixel(board.NEOPIXEL, 4, brightness=0.3, auto_write=False)touch1 = touchio.TouchIn(board.TOUCH1)touch2 = touchio.TouchIn(board.TOUCH2) bpm = 130i=0while True: ms_per_beat = int(60e3 / bpm / 16) leds[0:] = [[max(i-8,0) for i in l] for l in leds] # same as "fadeToBlackBy(8)" leds.show() i = (i+1) % ms_per_beat if i==0: # at the beat, each LED gets new random color leds[0:] = [rainbowio.colorwheel(random.random()*255) for l in leds] # touch pads change BPM up or down if touch1.value: bpm = bpm - 1 if touch2.value: bpm = bpm + 1 if touch1.value and touch2.value: # reset BPM if both are touched bpm = 130 time.sleep(0.01) — Reply to this email directly, view it on GitHub <https://gist.github.com/8c31150b373c8d2eb5d6c5f8fcafca12#gistcomment-4439259> or unsubscribe <https://github.com/notifications/unsubscribe-auth/A5IABKEQIVIZHH5P2XOUOJDWSY4B5BFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTAOJSGY3DMMJTU52HE2LHM5SXFJTDOJSWC5DF> . You are receiving this email because you commented on the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .

-- Andres Esparza 915.740.5178 http://lazymanadventures.wordpress.com/

Awesome, let me know if you have any other questions.
If you're just getting started, the above is using a Python trick called "list comprehensions" to do things in one line.
So for instance this line:

    leds[0:] = [rainbowio.colorwheel(random.random()*255) for l in leds]

is the same as:

    for i in range(len(leds)):
      leds[i] = rainbowio.colorwheel(random.random()*255)