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Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi!
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Connectivity of ws2811 with wled by adding 74HCT125N #1220

Closed shankerrhce closed 3 years ago

shankerrhce commented 4 years ago

I have issue with ws2811 led strip. i see a solution in the issues by connecting the level shifter 74HCT125N .

I am a newbie to electronics. is there any referral diagram or document which I can follow.

huggy-d1 commented 4 years ago

You are in luck. You can purchase devices with level shifters integrated into the circuit board. Some of the better ones have protective circuits and fuses to keep from burning up things like the LED strip, microcontroller, and house.

shankerrhce commented 4 years ago

I am from INDIA, I don't think I will get it here

Def3nder commented 4 years ago

Hi @shankerrhce, just connect the level shifter VCC pin to +5V and the the /OE (output enable) + GND pins to ground.

Then connect the LED pin to 1A and from pin 1Y to the LED data.

Look here: https://learn.adafruit.com/neopixels-on-raspberry-pi/raspberry-pi-wiring#raspberry-pi-wiring-with-level-shifting-chip-3006459-2

This way the WS2811 will get 5V data rather than 3,3V data.

henrygab commented 4 years ago

@shankerrhce, You should get the datashseet for your particular chip. This will help you understand the names for each pin on your chip. In particular, many have a DIR or direction pin.

To configure the A pins as input, sending to the corresponding B pin:

PIN Connect To
Vcc +5V
GND ground
/OE ground
DIR +5V

Also, connect any unused inputs to ground also. This will allow you to transmit from A1 to B1, A2 to B2, ... A8 to B8.

Connect the pin you are using for LED output (from the ESP module) to a corresponding A pin. Connect the corresponding B pin to the LED strip data pin (on the input side, of course).

In other words, other than forcing some pins to either ground or +5V, this chip just sits in the middle of the communication between the ESP module and the LEDs.

stale[bot] commented 3 years ago

Hey! This issue has been open for quite some time without any new comments now. It will be closed automatically in a week if no further activity occurs. Thank you for using WLED!