네오픽셀 RGB LED 스트립 144 LED -1m 흰색
(Adafruit NeoPixel Digital RGB LED Strip 144 LED
- 1m White - WHITE)
개요
- 본 제품은 144개의 개별적으로 제어가 가능한 RGB LED를 장착한 네오픽셀 스트립입니다.
- 흰색을 가진 유연한 PCB 1미터 위에 144개의 RGB LED가 촘촘히 장착되어 있습니다.
- 8비트 PWM을 이용하여 빨강, 초록, 파랑 색을 제어가 가능하여 픽셀당 24비트 컬러의 제어가 가능합니다.
- LED는 위아래로 체인식으로 연결된 쉬프트 레지스터에 의해 제어되기 때문에 스트립을 짧게 하거나 늘려서 사용이 가능합니다.
- 데이터를 보내는데 단 하나의 핀만 필요합니다.
- PWM은 각각의 LED 칩에 내장되어 있기 때문에 색을 한번 셋팅하면, LED 스트립에 신호를 보내지 않아도 모든 LED가 계속 빛이 나게 됩니다.
- 많은 LED가 촘촘히 장착되어 있기 때문에 20W(4A@5V)~35W가량(7A@5V)이 필요할 수 있습니다.
- LED 드라이버는 timing-specific protocol을 사용하기 때문에 8Mhz이상의 아두이노 우노/메가와 같은 실시간 마이크로컨트롤러와 사용하여야 합니다. 인터프리터 기반의 마이크로컨트롤러와는 동작하지 않습니다.
- 스트립의 끝은 2핀이나 3핀 JST SM 커넥터가 장착되어 있으며 별도의 전원/그라운드 와이어가 있습니다.
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특징
- 144 LEDs per meter
- Maximum 5V @ 60mA draw per LED (all LEDs on full brightness)
- 5VDC power requirement (do not exceed 6VDC) - no polarity protection!
- 1 integrated RGB LEDs per segment, individually controllable
- LED wavelengths: 630nm/530nm/475nm
- Connector: 3-pin JST SM
- Strip Width: 15mm / 0.6"
- Strip Thickness: 4mm / 0.16"
- Weight: 35.42g
- We currently ship this product with the WS2812B 4-pin chip LED installed. Previous versions may have come with the WS2812S 6-pin LED. Both B and S LEDs can be chained together and are compatible with the NeoPixel Libary. The 'B chip type adds additional polarity protection and is the same brightness as the 'S type.
- All your high-density LED dreams answered, yet there are a few things to watch for.
- First up, the ultra-high density means much higher power usage over a certain distance -35 Watts max (~7 Amps @ 5V). The max rating is assuming all the LEDs are on full white, usually the actual current for colorful design is about 1/3 to 1/2 the max current. A good power supply such as our 5V 10A supply is key!
- Second, to get high density, the controller chip is inside the LED, which is kind of cool, but also means that the chip only uses a single pin for input and a single pin for output. The protocol used is very very timing-specific and can only be controlled by microcontrollers with highly repeatable 100nS timing precision. We have example code for using with the Arduino Uno/Mega microcontroller at 8MHz and 16MHz, and with a little effort you can use with the Raspberry Pi, or Beagle Bone Black, but it will not work with the Basic Stamp, NETduino, any other interpreted/virtual machine microprocessor or any processor slower than 8 MHz. For those processors, check our LPD8806-based digital LED strip which has SPI-like input/output and works easily with Pi, NETduino, and other processors.
- Third, just because you have all those pixels doesn't mean you have the RAM for it - the entire strip must be buffered in memory, and we've found many Arduino UNO projects only have about 1500 bytes of RAM available after all the extras are included - enough for about 2-3 meters of the 144 LED pixels. If you want to drive multiple meters and have some other libraries included, use a Mega.
- This strip now comes with a weatherproof sheathing, you can remove it if not wanted, with a pair of scissors
문서
- Adafruit NeoPixel Überguide
- Using NeoPixels with Netduino Plus 2
- Larson Scanner Shades (Trinket-Powered NeoPixel LED Strip Glasses)
- NeoPixel Painter
- VU Meter Baseball Hat
- NeoPixels on Raspberry Pi
- The PICsellator
- The Pixif
- Multi-tasking the Arduino - Part 3
- Our detailed NeoPixel Uberguide has everything you need to use NeoPixels in any shape and size. Including ready-to-go library & example code for the Arduino UNO/Duemilanove/Diecimila, Flora/Micro/Leonardo, Trinket/Gemma, Arduino Due & Arduino Mega/ADK (all versions)