DedeHai

# disclaimer: fully AI generated code, it works just to demonstrate the visual idea

import pygame
import random
import math
import numpy as np
from scipy.ndimage import gaussian_filter

# Initialize Pygame
pygame.init()

DedeHai

/*
Low level driver test to generate 4-lane outputs for LED data (WS281x) using 4-step-cadence to encode the bit signals
This is the result of many hours of trial and error - there is little to no documentation and whatever I found in online examples did not properly work for the C3 but finally figured out a way that works.
took some inspiration from an M2M dma trasnfer example here: https://esp32.com/viewtopic.php?t=39242
also found something very similar with a similar jurney (welcome to hell ;) )https://github.com/vladkorotnev/plasma-clock/blob/main/src/display/akizuki_k875.cpp  this may also be a legit way, i.e. using high level API init and then modify, could be less brittle across SDK versions but I could not get it to work that way.
This code works in Arduino IDE 2.3.4 using "esp32 by Espressif Systems v. 3.3.5"

To anyone stumbling on this piece of code: feel free to put it to whatever use you want, no licensing restrictions.
If you find it useful to you, please feel free to buy me a beer or two :)  p

DedeHai

/*
  Capacitive Sensing methods using Arduino
  
  Visit https://bashtelorofscience.wordpress.com/ for a description and the circuit required to make this work.

  Please see https://www.arduino.cc/en/Reference/PortManipulation  for an explanation on the direct I/O access used in this sketch.
  note:
  the assembler command
  __asm__("nop\n\t");
  is used in the sketch to do single clock (62ns) delays.