Basic fill animation

Software
#1

I have a strip I want to use as a fill light, I’ve tried adapting a basic test script as im not a coder, and I can’t get it to work. I’ve tried using the strip fill animation, but I can’t get it to just tell the strip to light up x number of pixels x color and just… Not animate anything.
So I guess I just need advice on how to tell bibliopixel to light up a strip withouot an animation.

#2

There’s a fill animation: https://github.com/ManiacalLabs/BiblioPixel/blob/master/bibliopixel/animation/fill.py
Please provide whatever script or project file you have tried so far.

#3

NUMBEROFPIXELS = 140

import time
import bibliopixel
import bibliopixel.colors as colors
bibliopixel.log.setLogLevel(bibliopixel.log.DEBUG)
from bibliopixel.drivers.serial import *
driver = Serial(num = NUMBEROFPIXELS, ledtype = LEDTYPE.WS2812B, device_id = 0)
from bibliopixel.layout import *
led = Strip(driver)

try:
led.set_brightness(50)
for i in range(0,NUMBEROFPIXELS):
led.set(i,colors.White)
led.update()
time.sleep(0.01)
led.all_off()
led.update()
except KeyboardInterrupt:
led.all_off()
led.update()

And I know that gives me a sequential test updating the pixels white.
I tried inserting the fill animation lines instead of the last lines in this, but I just get syntax errors, which i’m not really sure how to correct.

#4

Can you please show what those syntax errors are?

You can also just use led.fill(colors.White) to fill everything the same color.

#5

driver = Serial(num = NUMBEROFPIXELS, ledtype = LEDTYPE.WS2812B, device_id = 0)
from bibliopixel.layout import *
led = Strip(driver)

try:
led.set_brightness(50)
for i in range(0,NUMBEROFPIXELS):
led.fill(colors.Red) )

Right sorry, that seems kind of obvious. I feel like this is probably an obvious coding thing, without the 2nd bracket I get an EOF error, so I thought the 2nd bracket closes the whole thing but its syntax is wrong :confused:

#6

I’m honestly not sure what you are getting at with the syntax error. If you see any errors please provide them here. Granted, I see that you have an extra ) on the led.fill line but it looks like you didn’t include all of your code here. You have a try directive but no except which would end that block. If this is, in fact, your entire code then yes, there’s a definite syntax issue as it’s missing the rest of that try block.

Also, you don’t need the for loop anymore because led.fill handles that. Just do like below:

led.set_brightness(50)
led.fill(colors.Red)
led.update()

Sorry I can’t be more specific but it’s a little hard to tell what’s up given what’s provided. A couple hints for posting code issues:

  • Always post code in a preformatted text block. There is a button in the Discourse editor that looks like </> - just paste in your code, select all of it, then hit that button. Another option is that discourse supports Markdown syntax. So you can just wrap any code in a block of triple “back-tick” marks. That’s the one under the ~ (assuming a US keyboard). More here: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#code
  • Always include the full text of all errors that you see. To you it may just be a random syntax error, but it would be really helpful to me :slight_smile:
#7

right, the try might be inappropriate, I am just copying code from the original code in my first reply that does a sequential.
NUMBEROFPIXELS = 140

import time
import bibliopixel
import bibliopixel.colors as colors
bibliopixel.log.setLogLevel(bibliopixel.log.DEBUG)
from bibliopixel.drivers.serial import *
driver = Serial(num = NUMBEROFPIXELS, ledtype = LEDTYPE.WS2812B, device_id = 0)
from bibliopixel.layout import *
led = Strip(driver)

try:
    led.set_brightness(50)
    led.fill(colors.Red)
except KeyboardInterrupt:
    led.all_off()
    led.update()

And that’s the code I just tried, it returns
WARNING - deprecated - util.setLogLevel
INFO - devices - Using COM Port: /dev/ttyACM0, Device ID: 0, Device Ver: 0
which usually turns up when it starts and asks the allpixel to reboot, but i have my strip connected and nothing happened.

#8

you have to use led.update() after led.fill() otherwise you won’t see anything.

#9

awesome, working great thanks :slight_smile:
sorry i made it more difficult, but I know for next time I need to copy all the errors and code.

#10

No worries at all! Discussing code in forums is not the most obvious thing unless you are used to it.
Glad it’s working now :slight_smile:

#11

actually I am getting the wrong colour though, I know it’s GRB so I tried this
i mport time
import bibliopixel
import bibliopixel.colors as colors
bibliopixel.log.setLogLevel(bibliopixel.log.DEBUG)
from bibliopixel.drivers.serial import *
driver = Serial(num = NUMBEROFPIXELS, ledtype = LEDTYPE.WS2812B, c_order = ChannelOrder.GRB, device_id = 0)
from bibliopixel.layout import *
led = Strip(driver)

try:
    led.set_brightness(75)
    led.fill(colors.Green)
    led.update()
except KeyboardInterrupt:
    led.all_off()
    led.update()

but that gives me the error that channelorder is not defined.
I tried finding it on these pages, but when it comes to the actual names to reference for specific order, they seem to reference each other.

Also i thought white should come up the same whatever the order, but I’m getting this amber/skin tone kind of colour.

#12

Should just need to add from bibliopixel import ChannelOrder