plasmon360

"""
Created on Fri Sep 19 18:11:40 2014

@author: Bala Krishna Juluri
"""

from visa import *
import time
#assumes connected with USB. Drivers are installed. Needs pyvisa for communication.
# There is no need to use visa write command for SP2150. because all commands are ask type (you write something and get a confirmation back saying OK)

plasmon360

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The real and imaginary part of dielectric permittivity of the metals is important to simulate the optical properties of metal films and nanoparticles. Permittivity data is obtained experimentally by ellipsometry and is fitted with analytical models. The most common model for fitting experimental data is with Drude-Lorentz model shown below. \n",
    "\n",
    "$$\\epsilon(\\omega)=1-\\frac{f_1\\omega_p^2}{(\\omega^2+i\\Gamma_1\\omega)}+\\sum_{j=2}^{n}\\frac{f_j\\omega_p^2}{(\\omega_{o,j}^2-\\omega^2-i\\Gamma_j\\omega)}$$\n",
    "\n",

plasmon360

home_price = 300000
down_payment = 20  # in percent
principal = home_price * (1 - down_payment / 100.0)
yearly_interest_rate = 3.710  # in percent
number_of_years = 30
pay_periods_per_year = 12


def remaining_at_end(monthly_payment, principal, number_of_years, pay_periods_per_year, yearly_interest_rate):
    remaining = principal

plasmon360

/*
  Melody

 Plays a Airtel Melody
 https://www.youtube.com/watch?v=SuAe2lziMqI
 Notes taken from https://www.youtube.com/watch?v=3m5j5UIRqQc
 Bala Krishna Juluri
 http://juluribk.com
 
 circuit:

plasmon360

# -*- coding: utf-8 -*-
"""
Created on Sat Dec 21 13:57:32 2013

@author: bjuluri
Uses Pyvisa for commounication
"""
from visa import *
import time, sys

plasmon360

import pigpio
import time
import sys
from datetime import datetime
from collections import Counter
import numpy as np
import plotly.plotly as py
from plotly.graph_objs import *

#command 1 =[0, 0, 0, 0, 0, 0, 1, 1]='0x03'