LED Strip Stays On After SLB Shutdown – Need Help Troubleshooting

I connected the LED lights following the instructions provided in the Technical Manual under the LED Strip section. However, after installation, I noticed the lights remain on even when the SLB is turned off.

I’m using a 5V power supply to power the rail lights, and I’ve used the recommended LED strips. I also updated the firmware according to the number of LEDs I’m using.

Can someone please help me understand what I might be doing wrong?

I’ve tried some of the code, but nothing seems to work!

Rail Ring
Auto M356 P0 Q0 M356 P1 Q0
White M356 P0 Q1 M356 P1 Q1
Off M356 P0 Q2 M356 P1 Q2

Any help would be greatly appreciated.

Welcome to the group, lots of good folks and resources here. I have the same set up on my system with the same issue. I put the commands you reference in as macros to turn them off. I often forget to run the macro before I quit g-sender in which case I unplug the power 5v power supply briefly which will turn them off until the next time you fire up the SLB.

@eortiz1 So, you have set M356 P0 Q0 and they stay on all the time?

Yes ,that is correct.

I left everything unplugged last night. I’ll try powering everything back up in a few hours after work and see what happens. I’ll keep you posted.

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@gwilki They lights are staying on. After SLB is turned off.

@eortiz1 The only thing that comes to mind is the the + lead and the “signal” lead are reversed so that you are feeding the 5v directly from the power source to the leds.
I’m sure that Sienci tech support will get you fixed up.

I checked the wiring, and everything looks good. I’m wondering if the issue might be related to the firmware. I checked the voltage, and it’s reaching the lights, but they’re still not turning on. I also tested with the spare LEDs I have on hand, and nothing is happening.

At least you went from staying on even with slb off, to not going on, so something changed and that may supply a handle to grab onto.

What happened to have this digital 180 flip?

@eortiz1 I’m confused. Your title and first post say that the lights stay on even with the SLB powered off. Now, you saying that they never turn on. What changed?
@Spamming_Eddie Agreed.

Have you resolved this issue. Mine are also staying on with the M356 P0 Q2 command saying they are off, but certainly are not off.

The lights are staying on even when the SLB is powered off. I haven’t resolved the issue yet, so for now, I’ve been disconnecting the 5V power source each night. At one point, the LEDs turned off and wouldn’t power back on, but after performing a hard reset on the SLB, they came back on the next day.

@eortiz1 Have you tried connecting to the Ring output on the SLB?

Yes and it does the same. Lights stayed on after the slb it’s turned off.

@eortiz1 It was just a shot in the dark. I’m sure that Sienci tech support will resolve this. Please report back when they do.

Got this into the wrong thread.

Update 1.5.3 will turn them on if off, but will not turn them off when on.

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Good info to know! thank you

@eortiz1 after thinking this through @peter_vanderwalt made the point that since the LED strip is powered by an external PSU, when you turn off the SLB it doesn’t have the time to tell the Rail LED strip to turn it’s lights off before the SLB itself turns off, and that leaves the strip lit up. This doesn’t happen with the ring light since it’s powered by the SLB itself so it loses power and turns off like you’d expect.

We likely can’t fix this through firmware, so until we come up with a new SLB design then the current workaround would be to power off the 5V power supply when you power off the SLB, or use an LED strip that draws low enough current that you can power it from the Ring output.

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@eortiz1 I must apologize, Emanuel. As soon as I read @chrismakesstuff reply, I realized why I am not having the same issue, and why my input here was pretty much useless.

The power supply for my LED strip is plugged into a power bar. The SLB is plugged into the same power bar. I don’t use the power switch ont the SLB at all. That switch is on all the time. I kill the power to the power bar. So, I never have a situation where the SLB is off and the LED still have power.

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@chrismakesstuff Thank you!