SB2209 (RP2040) Neopixel not turning on

New Voron 2.4 R2 build 350mm
MB: Manta M8P v2
Toolhead: Stealthburner via canbus

SB2209 [RP2040] head boards for stealthburner
LED lights : BIGTREETECH MSB / ESB RGB Kit V1.0

Ive complete the build with no issues yet trying to setup neopixel led on stealthburner toolhead but after research I can’t get them to turn on.
just don’t know what else to do

Ive replace both sb2209 and RP2040 boards .. no luck
I’ve replaced neopixel led strip with no luck
all boards and leds are in working order
tried generic cfg: stealthburner_leds.cfg file with no luck
tried simple cfg just to see if they turn on with no luck

[neopixel neo]
pin: RP01: gpio16

The I/O pin connected to the neopixel.

chain_count:3

The number of Neopixel chips that are “daisy chained” to the

color_order: GRBW

Pixel color order

initial_RED: 0.0
initial_GREEN: 0.0
initial_BLUE: 0.0
initial_WHITE: 0.0

########################## MACROS #################################

[gcode_macro BIB]
gcode:
{% for flashes in range (params.COUNT|default(10)|int) %}
SET_LED LED=neo index=1 RED=0 Green=0 Blue=0 White=1 Transmit=1
SET_LED LED=neo index=2 RED=0 Green=0 Blue=1 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=2 RED=0 Green=0 Blue=0 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=2 RED=0 Green=0 Blue=1 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=2 RED=0 Green=0 Blue=0 White=1 Transmit=1
G4 P200
SET_LED LED=neo index=2 RED=0 Green=0 Blue=0 White=0 Transmit=1
G4 P200
SET_LED LED=neo index=3 RED=1 Green=0 Blue=0 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=3 RED=0 Green=0 Blue=0 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=3 RED=1 Green=0 Blue=0 White=0 Transmit=1
G4 P50
SET_LED LED=neo index=3 RED=0 Green=0 Blue=0 White=1 Transmit=1
G4 P200
SET_LED LED=neo index=1 RED=0 Green=0 Blue=0 White=1 Transmit=1
SET_LED LED=neo index=2 RED=0 Green=0 Blue=0 White=0 Transmit=1
SET_LED LED=neo index=3 RED=0 Green=0 Blue=0 White=0 Transmit=1
G4 P200
{% endfor %}

Ive seen other people run into this same issue with no solution
some people commented that GPIO16 on SB2209 doesn’t work yet I’ve seen videos of same configuration working correctly.
hoping someone can point me in the right direction

Hello @wilsgarc !

Some things are missing/can be improved: How-To Ask for Help

what do you mean missing/can be improved ?

Have you read what is mentioned in the link?

In particular: How-To Ask for Help and How-To Ask for Help

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klippy.log (4.1 MB)

There is a fresh fix commited for that.
Loaded MCU 'mcu' 126 commands (v0.12.0-464-ga3b4b39ff / gcc: (15:8-2019-q3-1+b1)
You have to update your RP2040 MCUs to the 5b2f8104c or cherry-pick that change.

Hope that helps.

This solved my issue.. thanks for the help

1 Like