Battery Powered LED Strip

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USB LED strip

Add ambient lighting to your computing atmosphere with a USB LED strip. This add-on LED lighting promotes relaxation and calmness for your work or gaming area. In addition it serves as a low power solution back-light

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WS2812B/APA102 LED STRIP

WS2812B led strip is powered by a 5V power supply and is controlled by a single data line from a suitable controller, for example Teensy 3, Arduino, Raspberry Pi, BeagleBone Black or similar microcontroller/computer. APA102 is a type of three color-dimming IC,it has two signal cables:one data cable and one independent clock cable,which make the signal very fast and stable quality. and the strips can be 30/32/48/60/72/120 leds per meter,even as high density as 144led/m,the effect can be smooth transformation.

WS2812B/APA102 LED STRIP

275nm UVC LED

275nm UVC LED(UV275A-3535) is sealed in full aluminum packages with a choice of UV-transparent optical window. It can be Purification system,Disinfection,Analytical instruments,Sensor,and Medical Instruments.

275nm UVC LED

APA102 LEDS will replace WS2812B LEDS

2015/12/21 17:10:21

The original inner_face used WS2812B (NeoPixel) integrated RGB LED/controllers. These are great in that they only need one control line to work, update at a decent speed, and are relatively cheap.


Since assembling that project, a new RGB LED + controller solution has emerged on the market – the APA102(C)*. This chip uses an SPI-like interface with both a clock and data line. While consuming more IO, an interface with both clock and data can be driven with far less timing precision than the WS2812Bs which relied on precise delays.

Comparing the two, it seems clear that the APA102(C) is superior in all aspects but price:
 PARAMETER  WS2812B  APA102
 SIZE  5050   5050
 PINS  4  6
 INPUTS  1  2
 Bits/LED  24b  32b
 Min update timer/LED  30us (24b @ 1.5us)  1us (32b @ 32MHz)
 Max LEDs in series for 60fps  555  16666
 PWM rate  430Hz  19.2kHz
 Price (qty 1000)  $0.13  $0.15
The key figure of merit here is the number of LEDs that can be run in series for a 60fps update rate. With the WS2812B, it was only possible to run 555 LEDs in series which wasn’t even one full 32×32 panel. The APA102 would theoretically allow twice the number of LEDs used in the original inner_face project to be run through a single SPI port running at 32MHz.

the C in the APA102C indicates its country of origin is China, while without the C (or with a T) indicates Taiwan. The Taiwanese-made LEDs have an improved heatsink and cost ~$0.15 more in qty 1000.

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