Electrical Specifications

LED Specifications

Parameter	Value
LED Type	WS2812B-compatible (XL-1010RGBC-WS2812B)
Package Size	1.0 × 1.0 mm
Protocol	Single-wire NZR (800 kHz)
Color Channels	RGB (3 × 8-bit = 16.7M colors)
Supply Voltage	3.5–5.5 V
Per-LED Current	~2.3 mA per channel (measured)
Max Per-LED Current	~7 mA (full white, measured)

Board-Level Power

Condition	Current Draw	Power (at 5V)
All LEDs OFF	~34 mA	~0.17 W
Full white, brightness=255	~0.68 A	~3.4 W
Full white, brightness=128	~0.56 A	~2.8 W
Typical animation	0.1–0.4 A	0.5–2 W

Multi-Board Power Scaling

Boards	Max Current	Recommended PSU
1	0.68 A	USB-C or 5V 1A
2	1.37 A	USB-C 1.5A or 5V 2A
3	2.05 A	5V 3A
4	2.74 A	5V 3A

Default Firmware Settings

The shipped firmware sets MAX_BRIGHTNESS = 150 (out of 255), which is approximately 60% brightness. At measured draw levels, even full brightness (255) stays well within USB-C limits for a single board. The default of 150 remains a conservative choice for multi-board setups.

#define MAX_BRIGHTNESS 150  // Safe for USB-C, ~60% brightness

Tip: If you're using an external 5V power supply rated for sufficient current, you can safely increase MAX_BRIGHTNESS up to 255.

Data Signal

Parameter	Value
Data Pin (default)	7
Signal Voltage	3.3V or 5V logic
Protocol Speed	800 kHz
Refresh Rate	~30 fps typical (depends on number of LEDs and MCU speed)