This project is the main part of all RGB-LED-Strip-Projects: It finally displays the LEDs (WS2812) using neopixel-library
Commands are sent via serial:
- Baudrate: 115200
- StopBits: 1
- Parity: None
- DataBits: 8
Considering you have the old protocol (only shows one color to all LEDs).
The protocol is quiet simple: 7 byte each message
(R,G,B)
Every character above is one byte.
You want to show Yellow (Red 255, Green 255, Blue 0)
| Byte0 | Byte1 | Byte2 | Byte3 | Byte4 | Byte5 | Byte6 | |
|---|---|---|---|---|---|---|---|
| Hex | 0x28 | 0xFF | 0x2C | 0xFF | 0x2C | 0x00 | 0x29 |
| Description | Start ( | R | , | G | , | B | ) End |
This protocol support the LED-Strip where each LED is individually controllable.
The message length depends on the amount of LEDs on one strip. The amount has to be programmed manually into the Arduino/ESP in serialRGB.h under #define NUMPIXELS.
The protocol is similar to the old protocol, but the commas are missing, as they are not really needed. The protocol-start and -end is like the old protocol. A ( at the start and a ) at the end
The amount of bytes sent is: AmountRGB * 3 + 2.
For this example let's consider that there are three LEDs on the RGB-Strip. The amount of bytes sent are: 3 * 3 + 2 = 11
(RGBRGBRGB)
If you want to show it 0LightGreen, 1Orange, 2WeirdBlue:
| Byte0 | Byte1 | Byte2 | Byte3 | Byte4 | Byte5 | Byte6 | Byte7 | Byte8 | Byte9 | Byte10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hex | 0x28 | 0x80 | 0xFF | 0x80 | 0xFF | 0x80 | 0x00 | 0x20 | 0x50 | 0xD5 | 0x29 |
| Description | Start ( | R0 | G0 | B0 | R1 | G1 | B1 | R2 | G3 | B4 | ) End |