After transmission for each pixel, the signal to reduce 24bit pixel adopt auto reshaping transmit technology, making the pixel cascade number is not limited the signal transmission, only depend on the speed of signal transmission. After the pixel power-on reset, the DI port receive data from microcontroller, the first pixel collect initial 24bit data then sent to the internal data latch, the other data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade pixel through the DO port. The WS2812 can be controlled by data protocol on DI and DO pins, data transfer protocol use single NZR communication mode. For clear and IR light, appropriate photodiodes should be used. The WS2812 on Color 10 Click board™ can be used for testing purposes as well as the light source for object color detector, since VEM元328 can detect the color which WS2812 emits in R, G, B range. VEM元328 has a low operating voltage range of 2.6V to 3.6V, integrated modules, color sensor and signal conditioning IC, supports low transmittance (dark) lens design and provides 16-bit resolution for each channel (R, G, B, C, and IR). The sensor’s functions are easily operated via the simple command format of I2C (SMBus compatible) interface protocol. VEM元328 provides excellent temperature compensation capability for keeping the output stable under changing temperature. One of these features is certainly its high level of integration that allows a minimal number of external components. This sensor has many features that make it a perfect solution for small designs such as the Color 10 Click board™.
This sensor is a 16-bit, low power, high sensitivity CMOS color sensor and signal conditioning IC, that can be operated via a simple I2C commands. The Color 10 Click is based on VEM元328, a RGB and IR light sensor from Vishay.
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