Example for daisy chained LEDs

[andreklug]

Hi @julianschill

could you please provide an example on how the configuration would look like for daisy chained LEDs on a single PIN? For example PB0 on a Octopus 1.1 with four segments of WS2812b.

Thank you for your help!

[julianschill]

That is just one chain and effect on different segments:

[neopixel awesome_led_name]
pin: PB0
chain_count: 32
initial_RED: 0.0
initial_GREEN: 0.0
initial_BLUE: 0.0
initial_WHITE: 0.0
color_order: GRB

[led_effect first_segment_rgb]
leds:
    neopixel:awesome_led_name (1-8)
layers: 
    gradient       1 1  top  (1.0, 0.0, 0.0),(0.0, 1.0, 0.0),(0.0, 0.0, 1.0)
autostart:                             false
frame_rate:                            24

[led_effect second_segment_rgb]
leds:
    neopixel:awesome_led_name (9-16)
layers: 
    gradient       1 1  top  (1.0, 0.0, 0.0),(0.0, 1.0, 0.0),(0.0, 0.0, 1.0)
autostart:                             false
frame_rate:                            24

[led_effect third_segment_rgb]
leds:
    neopixel:awesome_led_name (17-24)
layers: 
    gradient       1 1  top  (1.0, 0.0, 0.0),(0.0, 1.0, 0.0),(0.0, 0.0, 1.0)
autostart:                             false
frame_rate:                            24

[led_effect fourth_segment_rgb]
leds:
    neopixel:awesome_led_name (25-32)
layers: 
    gradient       1 1  top  (1.0, 0.0, 0.0),(0.0, 1.0, 0.0),(0.0, 0.0, 1.0)
autostart:                             false
frame_rate:                            24

[led_effect all_segment_rgb]
leds:
    neopixel:awesome_led_name
layers: 
    gradient       1 1  top  (1.0, 0.0, 0.0),(0.0, 1.0, 0.0),(0.0, 0.0, 1.0)
autostart:                             false
frame_rate:                            24

Then start with: SET_LED_EFFECT effect=first_segment_rgb

[andreklug]

Thank you!

[andreklug]

The setup works, but after restarting Klipper I can set a new effect only once through the Console (SET_LED_EFFECT). whatever I try afterwards doesn't have any effect. Here's my current config, I am trying to switch between the first three effects. changed the blending between top and bottom to see if that does something.

pin:                     PB0
chain_count:             144
color_order:             GRB
initial_RED:             0.1
initial_GREEN:           0.1
initial_BLUE:            0.1

[led_effect lights_on]
#autostart:              true
frame_rate:             60
leds:
    neopixel:leds (1-43)
    neopixel:leds (44-72)
    neopixel:leds (73-115)
layers:
    static 1 0 bottom (1,1,1)
#    breathing  10 1 top (.5,.5,1)

[led_effect lights_off]
#autostart:              true
frame_rate:             60
leds:
    neopixel:leds (1-43)
    neopixel:leds (44-72)
    neopixel:leds (73-115)
layers:
    static 1 0 bottom (0,0,0)

[led_effect lights_dim]
frame_rate:             60
leds:
    neopixel:leds (1-43)
    neopixel:leds (44-72)
    neopixel:leds (73-115)
layers:
 #   static 1 0 top (0.2,0.2,0.2)
    breathing  10 1 bottom (.5,.5,1)

[led_effect heater_progress]
leds:
    neopixel:leds (10-1)
autostart:                          false
frame_rate:                         60
heater:                             heater_bed
layers:
    heater  50 0 add    (1,1,0),(1,0,0)
    static  0  0 top    (1,0,0)

[led_effect critical_error]
leds:
    neopixel:leds (1-43)
layers:
    strobe         1  1.5   add        (1.0,  1.0, 1.0)
    breathing      2  0     difference (0.95, 0.0, 0.0)
    static         1  0     top        (1.0,  0.0, 0.0)
autostart:                             false
frame_rate:                            60
run_on_error:                          true

[led_effect panic]
leds:
    neopixel:leds (1-43)
layers:
    strobe         1  1.5   add        (1.0,  1.0, 1.0)
    breathing      2  0     difference (0.95, 0.0, 0.0)
    static         1  0     top        (1.0,  0.0, 0.0)
autostart:                             false
frame_rate:                            60

[led_effect progress_bar]
leds:
    neopixel:leds (10-1)
autostart:                          false
frame_rate:                         60
layers:
    progress  -1  0 add         ( 0, 0,   1),( 0, 0.1, 0.6)
    static     0  0 top         ( 0, 0, 0.1)```

[julianschill]

All active Effects on one LED are summed up. So having a lights_off effect doesn't make any sense as the other effects will just run on top of it. Instead stop all effects using STOP_LED_EFFECTS or a particular effect with SET_LED_EFFECTS EFFECT=progress_bar STOP=1. After that you can start a new effect.

Also: instead of

    neopixel:leds (1-43)
    neopixel:leds (44-72)
    neopixel:leds (73-115)

you can just write neopixel:leds (1-115)

Blending mode bottom is there for completeness and is not very useful, as it ignores the top layer completely.

Your heater effect will need an additional color to switch to when the temperature is reached. Otherwise it will stay on one color and switch to the second color. (Maybe this is also what you want).

Also make yourself familiar with the documentation: https://github.com/julianschill/klipper-led_effect/blob/master/docs/LED_Effect.md

[gregspruce]

Is there a way to reverse the order on effects like chase and comet?

I tried below listing all the light indexes in reverse instead of (9-16), and it seems to work for the heaterfire effect, but not the comet effect. I suppose I could terminate new wiring and physically flip my LED bars, but maybe I'm missing a tweak:

[led_effect bar1_meshing]
autostart:              false
frame_rate:             24
leds:
    neopixel:bar_leds (1-8)
layers:
    comet  3 1 top (1.0, 1.0, 0.2), (0.3, 0.3, 1.0), (0.0, 0.0, 1.0)

[led_effect bar2_meshing]
autostart:              false
frame_rate:             24
leds:
    neopixel:bar_leds (16,15,14,13,12,11,10,9)
layers:
    comet  -3 1 top (1.0, 1.0, 0.2), (0.3, 0.3, 1.0), (0.0, 0.0, 1.0)

[julianschill]

Using a negative effect rate inverts the direction. Reversing the indexes also inverts the direction. So you inverted it twice which results in the original direction

[julianschill]

As there don't seem to be anymore questions I will close this.