BoardPilotWS2812 LED ring (16 LEDs) with ESP32
Supply 5 V
Bus GPIO
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| 5V | Power | VIN | Use VIN |
| GND | Ground | GND | |
| DI | Input (the ESP32 drives it) | D25 | Data in. Add a 330 Ω resistor |
| DO | Not wired to the ESP32 | — | Data out to the next ring. Leave unconnected |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.
Starter code (Arduino)
void setup() { pinMode(25, OUTPUT); } // DI
void loop() {
digitalWrite(25, HIGH);
delay(500);
digitalWrite(25, LOW);
delay(500);
}Sources
- Worldsemi WS2812B datasheet, Data input high level 0.7 × VDD
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.