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Step up3v3 to 5v
Moderators: adafruit_support_bill, adafruit

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Step up3v3 to 5v

by r00n on Fri Dec 14, 2018 4:32 am

Hello,
I am a learner, please be patient.

I am wanting to run 19 ws2812b leds from teensy 3.6 using the ws2812serial lib to get some visual feedback for an audio project.

I believe problems have arisen from different voltages of the 2 seperate systems so i am going to try to step up the voltage.

I have purchased a ic adafruit 74AHCT125 - Quad Level-Shifter (3V to 5V) - to do the job but I am failing to find a diagram of the required circuit to step up the volts. It's just the chip only, no shield.


Searching has unveiled a few circuit diagrams but I remain uncertain.
Would Yu please assist me to find a diagram that will show me how to integrate teensy, 74AHCT125, and ws2812 b leds?

r00n
 
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Joined: Fri Dec 14, 2018 4:30 am

Re: Step up3v3 to 5v

by adafruit_support_bill on Fri Dec 14, 2018 6:51 am

To start with, what will you be using to power the components in this system?

adafruit_support_bill
 
Posts: 71779
Joined: Sat Feb 07, 2009 10:11 am

Re: Step up3v3 to 5v

by r00n on Mon Dec 17, 2018 12:33 am

Teensy 3.6 is powered by USB but and runs at 3v3
The led chain is running of desktop power at 5v
Data line is 3.3 v

r00n
 
Posts: 2
Joined: Fri Dec 14, 2018 4:30 am

Re: Step up3v3 to 5v

by adafruit_support_bill on Mon Dec 17, 2018 7:03 am

Do you have a signal ground between the processor and the first pixel? Some photos showing your wiring and connections would be helpful.

adafruit_support_bill
 
Posts: 71779
Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.