ij96

from urllib.request import Request, urlopen
import json

class song:
    song_id = 0
    name = ''
    album = ''
    artist = ''
    lyrics = ''
    tlyrics = ''

ij96

close all;

num = [0 0   0    0.35];
den = [1 1.5 0.75 0.125];
H = tf(num,den)

figure;
bode(H);

figure;

ij96

#!/usr/bin/python3.5

import re, sys

SEPARATOR = '\n'

def extract(pattern, in_file_name, out_file_name):
    in_file_content = ""
    with open(in_file_name, 'r') as in_file:
        in_file_content = in_file.read()

ij96

% demonstrate the beating effect when an analogue signal is sampled
% more on: https://en.wikipedia.org/wiki/Beat_(acoustics)

clc; close all;

%//////////////////// parameters //////////////////////////////////////////
samp_freq = 8000;   % sampling frequency
input_freq = 3800;  % input sine wave frequency
num_of_cycles = 15; % number of input cycles to display on graph
x_accu_reso = 100;  % input resolution: number per sample points on input

ij96

#include <iostream>
#include <fstream>

int main() {
    std::ifstream is("input.data", std::ios::binary);
    std::ofstream os("output.data", std::ios::binary);
    char b[2];
    ushort x, px, c = 0;
    ushort ct = 2; // num. of repeated data to be written out
    if(is) {

ij96

// Arduino UNO

// faster digital read and write using register and bit mask
#define FAST_DIGITAL_READ(REG, MASK) (*REG & MASK) != 0;
#define FAST_DIGITAL_WRITE(REG, MASK, VAL) (VAL == LOW) ? (*REG &= ~MASK) : (*REG |= MASK);

// pin definition
#define OUTPUT_PIN 13
#define INTERRUPT_PIN 2

ij96

# rename MP3 files based on metadata (named artist and title)
# copy this script in the same directory as the MP3 files and run
# renamed MP3 are copied to renamed/
mkdir renamed;
for f in *.mp3; do
  TITLE=`ffmpeg -i "$f" 2>&1 | grep title | sed "s/ \+title \+: //"`;
  ARTIST=`ffmpeg -i "$f" 2>&1 | grep artist | sed "s/ \+artist \+: //"`;
  TRACK=`ffmpeg -i "$f" 2>&1 | grep track | sed "s/ \+track \+: //"`;
  ZERO_TRACK=$(printf %02d ${TRACK}); # zero-padded track number

ij96

import os
os.environ['CUDA_DEVICE_ORDER'] = 'PCI_BUS_ID'
os.environ['CUDA_VISIBLE_DEVICES'] = '0' # -1 = no GPU

import tensorflow as tf
import tensorflow.keras as keras

# versions
print('tf version: {}'.format(tf.__version__))
print('keras version: {}'.format(keras.__version__))

ij96

How to: program ATtiny85 via Arduino

Configure Arduino as ISP

• connect Arduino to the PC.
• open Arduino IDE.
• open the ArduinoISP example file (File > Examples > ArduinoISP).
• note: if using Arduino Mega, modify the following lines from:

#define RESET 10

ij96

;;;;;;;;;; start script
G21 ; set unit to mm
G90 ; set to absolute positioning
M82 ; set extruder to absolute mode
M107 ; fans off
G28 X0 Y0; home X and Y axes
G28 Z0 ; home Z axis
G1 Z15 F300 ; move to (0, 0, 15)
G92 E0 ; set new extruder position to 0
G1 F140 E29 ; extrude 29mm of material