brilliant-ember’s gists

brilliant-ember / calc.go

Last active May 23, 2026 10:09

Big integer calculator in Go. It can handle integers of any size, even beyond 64 bits. Does Addition, Subtraction, Multiplication and Division (up to 10 decimal places accuracy)

	package main

	import (
	"fmt"
	"math/big"
	"os"
	"strings"
	)

	// Multiply returns the product of two integers as a *big.Int along with digit counts

brilliant-ember / set-up.sh

Last active October 23, 2022 22:10

Ubuntu ML Set-up

	sudo apt install python3-pip tmux vim git jupyter podman nodejs virtualbox ruby xclip curl -y
	sudo apt install python3.10-venv -y
	pip3 install librosa tensorflow numpy matplotlib torch pandas virtualenv

	# install go
	wget https://go.dev/dl/go1.19.linux-amd64.tar.gz
	sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go1.19.linux-amd64.tar.gz
	export PATH=$PATH:/usr/local/go/bin
	sudo apt install gopls dlv -y

brilliant-ember / Inverse_Z_transform_python.py

Created April 27, 2021 21:52

How to do inverse Z transform with python, this function will break up the partial fraction assuming Z transform. Note that it doesn't handle complex roots, if you have complex roots use the scipy residuez function to find the poles and coefficients.

	### Solving Z domain partial fraction with sympy
	from sympy import *
	z = symbols('z')

	def inverse_z(h):
	'''finds X(z)/z for the inverse z transform table look up
	'''
	h = h/z
	h = h.apart() * z
	return expand(h)

brilliant-ember / python_serial_receiver.py

Last active December 10, 2020 16:40

Python and Arduino Serial communication


	import serial
	from time import sleep

	COM = '/dev/ttyUSB0' #This is for linuxm Will be COM# for windows copmuters so check ur usb port names
	BAUD = 9600
	ser = serial.Serial(COM, BAUD, timeout = .1)

	print('Waiting for device');
	sleep(1)

brilliant-ember / tmux.conf

Created September 10, 2020 14:30

My Linux tmux config, for easy copy-paste between tmux and the computer, and using vim mode, and my preferred color. You have to have xclip installed

	# paste all of this here: ~/.tmux.conf

	# for copying to sys clipboard
	bind -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "xclip -i -f -selection primary \| xclip -i -selection clipboard"
	bind -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel "xclip -i -f -selection primary \| xclip -i -selection clipboard"
	bind -T copy-mode-vi C-j send-keys -X copy-pipe-and-cancel "xclip -i -f -selection primary \| xclip -i -selection clipboard"

	#general other stuff
	set -g default-terminal "xterm-256color"
	set -g mouse on

brilliant-ember / plot_response_and_error.m

Last active April 10, 2020 21:06

Plots a system's response, and error response of various inputs namely step, ramp, and parabolic inputs.

	# u can change the input type and response by uncommenting
	## t the stions of the code that are below each subplot
	clear; clc;
	pkg load control;
	K = 32.3;
	s = tf('s');
	openLoopTf = K/( s(s+3)(s+6));
	##openLoopTf = (672(s+5)) / (s(s+6)(s+7)(s+8));;
	## closed loop
	## very important to follow this order for the input

brilliant-ember / tf_to_symbolic.py

Created April 7, 2020 22:18

Converts a control lib transfer function to sympy lib symbolic equation, uses x instead of s for the symbolic representation

	def tf_to_symbolic_fraction(tf):
	x = symbols('x')
	num, den = tfdata(tf)
	num = num[0][0]
	den = den[0][0]
	counter = 1
	length_num = len(num)
	length_den = len(den)

	sym_num, sym_den = 0,0

brilliant-ember / modulation.m

Last active April 5, 2020 12:57

Plot periodic functions in Octave or Matlab with this script. It multiplies (modulates) the carrier and the msg signals, and plots the time domain and FFT reprisentation

	% referenced gist https://gist.github.com/akiatoji/5649907
	clear ; close all; clc

	fundPeriod = pi/1000;
	num_tsteps = 1000;
	num_periods = 4;
	tstep = num_periods * fundPeriod / num_tsteps;

	t = 0:tstep:(num_periods * fundPeriod);
	msg = 2cos(400t)+4sin(500t+pi/3);

brilliant-ember / control_functions.py

Last active March 31, 2020 03:01

Control systems helpful function

	# percent overshoot to theta angle and zeta ratio calculator
	# PD controller calculator
	#so far can only find kp value for a PD controller

	# numpy is weird it has ln has a log for some reason
	from numpy import log as ln
	from math import atan, sqrt, pi, degrees
	from sympy import symbols, simplify, fraction,solve, pprint, evalf, im, I
	from math import isclose

Mohammed Al brilliant-ember