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zoesn89 / WLED_PCB_D1_Mini

PCB for WLED with WeMos D1 Mini and SN74AHCT125N level shifter
MIT License
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[Question] SN74AHCT125N level shifter #2

Closed Noschvie closed 3 years ago

Noschvie commented 3 years ago

Hello why is this "SN74AHCT125N level shifter" needed ? Thanks Norbert

zoesn89 commented 3 years ago

Hey Norbert,

its needed, when you have a bigger distance between the ESP and the first LED. The ESP is working with 3,3V IO and the Strips often with 5V data signals. For short distances 3,3V is often enough, but on bigger distances the voltage drop is too big. So the level shifter puts the 3,3V signal to a 5V signal ;)

Noschvie commented 3 years ago

Hi Felix do you have a list of the parts to be ordered online like conrad.at or reichelt.at ? Thanks, Norbert

Noschvie commented 3 years ago

... Device is "up and running" , thanks again.

zoesn89 commented 3 years ago

... Device is "up and running" , thanks again.

Nice! Have fun with it 😉 P.S.: If you need an enclosure, I have a 3D printable one now :)

Noschvie commented 3 years ago

P.S.: If you need an enclosure, I have a 3D printable one now :)

are these files accessible ? Thanks

zoesn89 commented 3 years ago

are these files accessible ? Thanks

not yet, I'll upload them later ;)

zoesn89 commented 3 years ago

Hey,

I added the files ;) see https://github.com/zoesn89/WLED_PCB_D1_Mini/tree/main/Enclosure