Overview
This pixel protocol was designed by OPSCO in China. It is an improved design of its previous version, SK6822, using a clock line to achieve faster refresh rates and improved optics to achieve a higher PWM rate, which is why SK9822 is one of the most common protocols for pixel lighting displays. The control circuit and LEDs are integrated in a 5050 SMD package, which provides a small physical footprint for each pixel.
Current Control
SK9822 has the ability to digitally control the current of the connected LEDs. Use the 5-bit global current control to lower the brightness without sacrificing resolution. This global brightness control can be set when configuring your PixLite Mk3 controller.
SK9822 pixel protocol
Specifications
PixLite Mk1 | |
PixLite Mk2 | |
PixLite Mk3 | |
Clock Type | Clocked |
Color Resolution | 8 Bits |
Current Control | Global: 5 Bits |
Physical Package | SMD5050 with integrated LEDs |
RGB | |
RBGW | |
Input Voltage | 5V |
Output Pixel Voltage | 5V |
PWM Rate | 4600Hz |
Suitable Camera | Up to 154fps |
Data Transfer Rate | N/A |
Redundant Data Line |
Colors
Color | Wavelength |
|---|---|
Red | 620 – 630 nm |
Green | 515 – 525 nm |
Blue | 460 – 470 nm |
Considerations for Use
Advantages
- Presence of a clock allows for faster refresh rates
- Very high PWM rate allows for filming these pixels with cameras up to 154fps
Disadvantages
- Only 8 bits of data for each color makes dimming curves less smooth
- Limited to 5V, causing short cable lengths
- No redundancy in data
PixLite Support
Are you looking for SK9822 pixel drivers that work with Art-Net or sACN?
All PixLite Mk2 and Mk3 products support SK9822 as an available Pixel IC type, so get in touch with us to find out how the lighting specialists at Advatek can support you in your pixel lighting project.
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