HD108
SPI RGB · Dongguan Shiji Lighting · apa102
- Channels
- RGB
- Bits / channel
- 16
- Supply
- 4.5–5.5 V
- PWM
- 27 kHz
- Backup data
- no
- Packages
- 1
16 bits per channel. The reason to care is dimming: with 8 bits, the bottom of a fade is a handful of visibly distinct steps before black. Genuinely different from everything else in this catalogue rather than another clone.
Refresh & flicker
The headline feature is 16 bits per channel rather than 8, which is what makes smooth low-level fades possible - 8-bit parts visibly step and then cut to black at the bottom of a fade.
Timing
| Source | T0H | T0L | T1H | T1L | Period | Rate | Reset | ± |
|---|---|---|---|---|---|---|---|---|
| datasheet | — | — | — | — | — | — | — | — |
Clones & compatibility
“Compatible” is never stated bare here — each relationship carries how strong the claim is, and what bites if you assume too much.
-
protocol compatible
APA102
Same SPI framing concept, but each pixel carries 16 bits per channel, so an APA102 driver will not produce correct output without explicit HD108 support.
Library support
- FastLED
HD108↗- WLED
HD108
FastLED has a dedicated hd108.h chipset implementation.
Parts using this protocol
Dating evidence
Evidence, not a release date. A library commit proves the part existed by that date and says nothing about how long before.
- 2025-10-30 first library support FastLED — first commit introducing HD108 ↗ day