Searching Transistor which transforms 3.3v to 12v (level shifting problem)

MrSalts

Joined Apr 2, 2020
2,767
Pin 7 on the Chip determines if you have to use Vdd or logic level signals.
Most manufacturers are using pin 7 = no connection for logic level switching. For logic level shifting, logic low is less than 0.3v and logic high is above 0.7v. Super easy. I hope you bought lights with pin 7 floating (not connected) which is known as High Speed Mode.

C68A969F-3C83-4B2E-9023-69F4C123879A.jpeg
 

Thread Starter

noname1234

Joined Feb 20, 2021
8
I was able to control a ws2811 strip with a Raspberry pi using Python code directly from 3.3v pins. No need for 5-volt logic.
Connect the 12VDC power to the power pins on the ws2811, connect the ground of the Raspberry pi to the (-) pins of your 12VDC supply and then drive the logic pin of the strip from your pi.
Could you please send me your code?
 

sparky 1

Joined Nov 3, 2018
759
In this simulation first the voltage level then the current if necessary. The mosfet circuit is very efficient.
There are modules IRF520 (IRF520 Module) There is always something not quite the way you want it.
The breakout board has V1 V2 supply at the top and 3 pins at the bottom to fit a solderless bread.

signal level shifter 2N7000.JPG
 
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