whats the rate each led can be updated? (how many times per second)

Each LED requires three bytes of data for green, red, and blue - 24 bits total. As each bit is specified as being 1.25us, writing one LED requires 30us. The LEDs are accessed sequentially, so writing to 50 LEDs will take 1.50ms. The data timing may vary from one controller to another; these timing specs are from the WS2812B datasheet.

Is it better with 5v or 12v wiring system?

12v is the best. Especially if you will need to run wire from your controller to your lights and if you plan to control more than 50 bulbs from one “channel” on your controller. With the 5v you will have to use power injection if you connect strands together and you can’t run very long extension cables.

How do you cut these shorter? I'm wanting to cut it in half for a project I'm doing, but don't want to set anything on fire.

Simply use a wire cutters (side cutters, or whatever you want to call it). No, you won't set anything on fire, but as a good safety practice, make sure they aren't plugged in (powered) when you cut the wires. If you need to space them out, you can cut the wires and solder on longer wires between the bulbs. These are very easy to work with, and very satisfying. :-) Good luck, and please tell us about your project!

How long is the string?

The distance between the leds is 4.5 inches X 50 leds = 225 inches from first to last led, plus a little extra for connecting to the power supply and the last led extra cable to connect several strings together.

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ALITOVE WS2811 12mm Diffused Digital RGB LED Pixel Light 5V Individually Addressable Round Bullet LED Pixels Module IP68 Waterproof DC 5V 50pcs/Set for Billboard House Halloween Christmas Decor

Product ID: 23664921

Details

Brand
ALITOVE
Color
RGB (Red Green
Indoor/Outdoor Usage
Outdoor
Light Color
Multicolor
Light Source Type
LED
Occasion
Christmas

🌈16.7M colors

💧IP68 waterproof

🔗3-pin JST-SM connectors

£25.57

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Description

🌟 Light up your world with precision and waterproof brilliance!

WEATHERPROOF WONDER - IP68-rated silicone-sealed housing and UV-resistant wiring built to brave rain, snow, and underwater conditions.
INFINITE COLOR CONTROL - Individually addressable LEDs with 24-bit color depth for 16.7 million vibrant hues.
MODULAR CUSTOMIZABLE - Cuttable pixels and easy 3-pin connector design let you tailor length and power injection for any project scale.
UNIVERSAL COMPATIBILITY - Seamlessly integrates with Arduino, Raspberry Pi, and a wide range of Bluetooth & Wi-Fi controllers for ultimate creative freedom.
VERSATILE AMBIANCE CREATOR - Perfect for dynamic outdoor billboards, festive holiday displays, architectural outlines, and immersive event lighting.

The ALITOVE WS2811 12mm Diffused Digital RGB LED Pixel Light set features 50 individually addressable RGB LEDs with 24-bit color and 256 brightness levels, delivering 16.7 million colors. Encased in IP68 waterproof silicone housing with UV and cold-resistant wiring, these 5V LED pixels are designed for durable outdoor and underwater use. Easily customizable with cuttable pixels and 3-pin JST-SM connectors, they support a broad range of controllers including Arduino, Raspberry Pi, and Bluetooth/Wi-Fi devices, making them ideal for professional-grade lighting projects like billboards, holiday decor, and architectural lighting.

Specifications

ASIN	B01AG923GI
Additional Features	Color Changing , Dimmable , Waterproof
Best Sellers Rank	#88,843 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,058 in Outdoor String Lights
Brand Name	ALITOVE
Bulb Shape Size	B10
Color	RGB (Red, Green, Blue)
Connectivity Protocol	Corded Connection
Connectivity Technology	Bluetooth, Wi-Fi
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.6 4.6 out of 5 stars (520)
Form Factor	Bullet
Included Components	1x 50pcs WS2811 LED pixels light
Indoor Outdoor Usage	Outdoor
Ingress Protection Code Rating	IP68
Item Dimensions	7.6 x 5.71 x 1.89 inches
Item Length	4 meters
Item Weight	9.07 g
Light Color	Multicolor
Light Source Type	LED
Manufacturer	Shenzhen ALITOVE Electronic Technology Co., Ltd
Manufacturer Part Number	LED PIXEL
Material Type	Plastic
Model Number	WS2811-5V
Number of Items	50
Number of Light Sources	50
Occasion	Christmas
Power Source	DC 5V
Product Style	Modern
Seasons	Christmas
Theme	Outdoor Decorative Lighting
UPC	678425399193
Unit Count	50 Count
Voltage	5 volts_of_direct_current
Water Resistance Level	Waterproof
Wattage	15 watts
Wireless Communication Technology	Bluetooth, Wi-Fi
hanging_pattern_layout	Linear

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