【Training Camp】EDA Light String-419308A

1. This project is an RGB magic light string, using ws2812 lamp beads, which can be controlled by cascade signals to control the color of each lamp bead individually. 2. The purpose is to learn Lichuang EDA and Tuya IoT modules. Considering the cost and time, the WS2812 lamp beads are placed on one board, which is equivalent to making a development board. Later, the lamp beads can be separated with 3-core wires and added Install the shell and turn it into a real light string; 3. Control principle: The mobile phone communicates with the Tuya module through Bluetooth Mesh, the Tuya module communicates with the MCU through the serial port, and the MCU sends signals to the WS2812 lamp beads to achieve RGB changes; 4. Unimplemented Function: Because the power of ws2812 is small, the brightness is low when white light is used, so it is necessary to add white light beads (6500K); it is difficult to mix RGB lamp beads with low color temperature lights, so it is necessary to add warm white light beads (2200K); Solution: You can add WS2811 to control white light and warm white light through MOS (refer to the AO3400 circuit in the training video), that is, a ws2811 and a ws2812 are a group to control red, green, blue, positive white and warm white, which not only meets the changes of RGB atmosphere lights, but also can To meet the lighting needs; 5. The MCU uses ATMEL's 328 microcontroller, which can be coded with Arduino. To facilitate debugging, a CH340 serial port circuit is also added, which does not need to be attached;