Neopixels and nanos

So after a lot of trying different things it seems if I load the RGBW test file from adafruit into a nano with the newer boot loader all the pixels come come on white and nothing seems to work

When I change it to a nano with an old boot loader it works fine

Am I missing a driver or something for the newer boot loader?

You can always burn the old bootloader into the Nano with the new bootloader; it will more than likely proof that it's not bootloader related.

Originals or clones. Clones only follow the original's design but can differ; e.g. the power circuit of one clone can be different from another clone.

How many LEDs? How are they powered?

Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project :wink: See About the Installation & Troubleshooting category.

Thanks for the reply
They are actual nanos not clones

I have tried 6 different nanos with the new boot loader and have the same on all of them

Two old bootloaders nanos have no problems

Only thing I can think of, the newer optiboot bootloaders will detect what caused the chip to reset, and go directly to your sketch from a power-on reset, while the older bootloaders will wait a couple of seconds to see if there is an upload attempt.

Ya lost me
Lol

I’m
New to this stuff

@david_2018 is trying to think of anything that could cause this to work on old bootloader Nanos but not the new bootloader ones, because, in theory, the bootloader should make absolutely no difference at all to neopixels. To answer your question, no you are not missing a driver. The driver is the neopixel library, and I assume you are using the same version of that with all your Nanos.

Correct they are all the new RGBW ones ordered last week

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