Summary of What’s Behind the Light? – How WS2812B LED Strips Work

00:00:00 - 00:20:00

The video explains how WS2812B LED strips work and how to wire them up to a Raspberry Pi or Arduino. The user needs a level converter and a strip of LEDs. If using a Raspberry Pi, the user needs only a strip of LEDs and a level converter.

• 00:00:00 In this video, WS2812B LED strips are explained and how they work. Additionally, data sheets for these strips are examined, and it is noted that the current drawn by the LED strips is dependent on the brightness level and the number of LED's on the strip. Lastly, it is explained that the voltage needed by the controller to power the LED strip is 3.5 volts or greater, and that the Raspberry Pi can power these strips as long as the voltage is kept at 5 volts.
• 00:05:00 This video explains how WS2812B LED strips work, and how an external power supply (such as an atx power supply) is necessary to drive them properly. The data lines for the LED strips must be connected to the Raspberry Pi's data input, and the Raspberry Pi must be running at 3.3 volts for reliable operation.
• 00:10:00 The WS2812B LED strip is a type of LED that uses a series of pulses to represent a zero or one. These pulses are 1.25 microseconds apart and are represented by a pulse high and a pulse low. Each pixel in the strip reads data from the strip as a series of pulses, and the processor writes data to the LEDs as a series of pulses.
• 00:15:00 WS2812B LED strips use 24-bit data per pixel to create colors, and send these bits down a strip of LED lights. Each LED light receives a one- eighth of a second sample of the data, and is able to light up appropriately. If the data is sent at 80 hertz, then the strip can support up to 30 LED lights without flicker.
• 00:20:00 The video explains how WS2812B LED strips work, and shows how to wire them up to a Raspberry Pi or Arduino. If using an Arduino, the user needs a level converter and a strip of LEDs. If using a Raspberry Pi, the user needs only a strip of LEDs and a level converter.