The ESP-01 board doesn't have a lot of accessible GPIO pins, but you need only one to control a string of addressable LEDs. This project uses an ESP8266-based ESP-01 board to control a string of LEDs, each of which contains a WS2811 controller. The color of each LED can be controlled individually. One of the UARTs is used to to generate the signal to control the LEDs rather than bit-banging it.
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