TL;DR
James Bowman has developed a CircuitPython program called PulseTrain for the Raspberry Pi RP2040 Pico, which simplifies generating precise sets of binary pulses. This is particularly useful for applications that require exact timing, like controlling WS2812B RGB LEDs (often referred to as NeoPixels). The program leverages the RP2040's Programmable Input/Output (PIO) subsystem to create tailored pulse trains, making it easier to implement various digital communication protocols.