How to wire / setup Neopixel on the Duet 2 Wifi?

alankilian

@thebaseddoge Here's a picture from your link showing how to connect 3.3 Volt, 5 Volts, Ground, your signal from the Duet and your signal to the LED string.

However, people in the comments say this device does not work with their LED strings, so you might not be able to get it working either.

dc42

A faster level shifter would be one quarter of a 74HCT08 quad gate. Connect both the inputs of the gate to the Duet output, and connect the gate output to the Neopixels. Power the 74HCT08 from +5V and ground. It's good practice to connect the unused inputs the other 3 gates to ground.

TheBasedDoge

@alankilian Yeah it didn't work. I will order the 74HCT08 and try again

tekstyle

@thebaseddoge
Can you Share the source of the sketch you used for your arduino?

A Former User

@tekstyle said in How to wire / setup Neopixel on the Duet 2 Wifi?:

@thebaseddoge
Can you Share the source of the sketch you used for your arduino?

I'm interested too!

A Former User

@dc42 said in How to wire / setup Neopixel on the Duet 2 Wifi?:

74HCT08

Just for confimation, you mean that I have to connect the AND input to the Duet and the related AND out to adafruit, right? It's not clear for me if an Arduino is needed or not....in case how to interface it with the Duet?

dc42

@thedragonlord you don't need the Arduino if you use firmware 3.3 and the level shifter. However, there is the limitation that on Duet 2 the print will be suspended for small fraction of a second whenever you use M150 to change the colours. So if you change the colours frequently while the machine is printing, then print quality could be affected.

A Former User

@dc42 said in How to wire / setup Neopixel on the Duet 2 Wifi?:

@thedragonlord you don't need the Arduino if you use firmware 3.3 and the level shifter. However, there is the limitation that on Duet 2 the print will be suspended for small fraction of a second whenever you use M150 to change the colours. So if you change the colours frequently while the machine is printing, then print quality could be affected.

Uh ok....well, for now I wanted to use the RGBW ring (not strip) just to make a sort of "progress bar" for the heating before printing...I was als thinking to use it during the print to make always a sort of progress bar for the printing process but I have to study the object browser to see what information are available...I was thinking to base the progress on the actual layer number/total layers number but I still don't know if and where those informations are available...in any case I'll change colors only once per layer group..My rgbw ring has 24 LEDs so any LED would represent the 4,17% of the whole...

dc42

@thedragonlord if you can arrange to change the colours while the filament is retracted, perhaps in a layer change script, then there should be no impact on print quality.

A Former User

@dc42 said in How to wire / setup Neopixel on the Duet 2 Wifi?:

@thedragonlord if you can arrange to change the colours while the filament is retracted, perhaps in a layer change script, then there should be no impact on print quality.

yes, that's exactly what I meant to do, thanks!

zapta

@dc42, is it OK to Have two 60 led stripes fed in parallel from the duet signal out? Or any other serial / parallel "tree"?

mattyo

Would some one be able to give me a simple diagram on how to wire a 74HCT08 I am a noob with electronics at this level. I would really appreciate some guidance. I won’t to hook up some neo pixels to a duet wifi. But I have no idea how to use a level shifter. Thanks very much Matt.

dc42

@zapta said in How to wire / setup Neopixel on the Duet 2 Wifi?:

@dc42, is it OK to Have two 60 led stripes fed in parallel from the duet signal out? Or any other serial / parallel "tree"?

Yes, assuming your have sufficient 5V power to run both strips.