How to implement LED lantern control with DragonBoard 410c development board

LED lanterns have become a popular choice for lighting due to their vibrant colors, affordability, and ease of control. It's now common to see streets and urban buildings decorated with these attractive lights. In this blog post, I'll show you how to use the DragonBoard 410c development board to control LED lanterns. The programmable lanterns used in this project are illustrated in Figure 1:

How to implement LED lantern control with DragonBoard 410c development board

Figure 1

**Basic Parameters:** - **Color:** Full color - **Waterproof Rating:** IP20 (not waterproof), IP65 (Epoxy waterproof), IP67 (casing waterproof), IP68 (fully waterproof) - **Wavelength:** Red (620–630 nm), Green (520–525 nm), Blue (465–470 nm) - **Light Intensity:** 500–600 mcd (Red), 900–1200 mcd (Green), 250–310 mcd (Blue) - **Luminous Flux:** 1.68 lm (Red), 3.2 lm (Green), 0.84 lm (Blue) - **Dimensions:** 5000 x 12 mm - **Weight/Volume:** 300g - **Illumination Angle:** 120° - **Working Voltage:** DC 5V - **Power:** 10W/m - **Number of LEDs per Meter:** 32 LEDs - **IC Model:** WS2801 - **Number of ICs per Meter:** 32 ICs **Control Principle:** Each IC controls one LED to form a group, and the controller sends signals through the FPCB to manage the LED strip. This allows for various effects such as blinking, chasing, jumping, or rotating patterns. You can also write your own code to customize the display. The WS2801 has a built-in signal regeneration feature. After receiving a rising edge, SCLKI generates a 300ns high-level pulse internally, which acts as the clock signal for data transmission. At a frequency of 2MHz, up to 2048 points can be connected in series, with a frame rate of 30Hz or higher. The grayscale data structure of the WS2801 is shown in Figure 2:

How to implement LED lantern control with DragonBoard 410c development board

Figure 2

The data transmission timing for the WS2801 is illustrated in Figure 3:

How to implement LED lantern control with DragonBoard 410c development board

Figure 3

Since the DragonBoard 410c operates at 1.8V GPIO voltage, but the WS2801 requires 3.3V, a voltage conversion chip is necessary between the board and the LED strip. The wiring diagram between the DragonBoard 410c and the LED strip is shown in Figure 4:

How to implement LED lantern control with DragonBoard 410c development board

Figure 4

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