Difference between revisions of "LED Ring NeoPixel"
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| Line 30: | Line 30: | ||
= A small Program in MicroPython = | = A small Program in MicroPython = | ||
<syntaxhighlight lang="python" line='line'> | <syntaxhighlight lang="python" line='line'> | ||
| − | # | + | import neopixel |
| − | # | + | from machine import Pin |
| + | from time import sleep | ||
| + | |||
| + | # number of leds | ||
| + | n=8 | ||
| + | # connected Pin | ||
| + | p=0 | ||
| + | |||
| + | np = neopixel.NeoPixel(Pin(p),n) | ||
| + | |||
| + | # colors the led at position in (r,g,b) | ||
| + | def color(position, r,g,b): | ||
| + | np[position]=(r,g,b) | ||
| + | np.write() | ||
| + | |||
| + | # remove all colors | ||
| + | def clearAll(): | ||
| + | for i in range(n): | ||
| + | color(i,0,0,0) | ||
| + | |||
| + | # remove color from led at position | ||
| + | def clear(position): | ||
| + | color(position,0,0,0) | ||
| + | |||
| + | |||
| + | # the color (r,g,b) should run x times like a cycle | ||
| + | def cycle(r,g,b,wait,x): | ||
| + | # before setting new colors, clear the ring | ||
| + | clearAll() | ||
| + | |||
| + | # the cycle should run x times | ||
| + | for j in range(x): | ||
| + | for i in range(n): | ||
| + | # clear the previous led | ||
| + | if(i==0): | ||
| + | clear(n-1) | ||
| + | else: | ||
| + | clear(i-1) | ||
| + | |||
| + | # color the current led | ||
| + | color(i,r,g,b) | ||
| + | |||
| + | # wait, color is displayed this time | ||
| + | sleep(wait) | ||
| + | |||
| + | |||
| + | cycle(0,255,255,0.5,4) | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 12:30, 19 August 2020
Contents
Description
Text
Image(s)
How to connect it electrically
Text
Image(s)
How to control it in MicroPython
1 import neopixel
2 from machine import Pin
3
4 # number of leds
5 n=8
6 # connected Pin
7 p=0
8
9 np = neopixel.NeoPixel(Pin(p),n)
10
11 # sets color of the led at position 0 to (r,g,b)
12 np[0] = (255,0,0)
13 # colors the leds
14 np.write()
A small Program in MicroPython
1 import neopixel
2 from machine import Pin
3 from time import sleep
4
5 # number of leds
6 n=8
7 # connected Pin
8 p=0
9
10 np = neopixel.NeoPixel(Pin(p),n)
11
12 # colors the led at position in (r,g,b)
13 def color(position, r,g,b):
14 np[position]=(r,g,b)
15 np.write()
16
17 # remove all colors
18 def clearAll():
19 for i in range(n):
20 color(i,0,0,0)
21
22 # remove color from led at position
23 def clear(position):
24 color(position,0,0,0)
25
26
27 # the color (r,g,b) should run x times like a cycle
28 def cycle(r,g,b,wait,x):
29 # before setting new colors, clear the ring
30 clearAll()
31
32 # the cycle should run x times
33 for j in range(x):
34 for i in range(n):
35 # clear the previous led
36 if(i==0):
37 clear(n-1)
38 else:
39 clear(i-1)
40
41 # color the current led
42 color(i,r,g,b)
43
44 # wait, color is displayed this time
45 sleep(wait)
46
47
48 cycle(0,255,255,0.5,4)
text
image(s)
Related Tutorial Videos
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Background
text
image(s)
