sansal54

Text(
            "Gradient Text Example",
            style: TextStyle(
              fontSize: 50.0,
              fontWeight: FontWeight.bold,
              foreground: Paint()
                ..shader = const LinearGradient(
                  colors: <Color>[
                    Colors.red,
                    Colors.blue,

sansal54

sudo apt-get install git python3-pip make build-essential libssl-dev libffi-dev python-is-python3 zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev curl
sudo pip3 install virtualenvwrapper

git clone https://github.com/yyuu/pyenv.git ~/.pyenv
git clone https://github.com/yyuu/pyenv-virtualenvwrapper.git ~/.pyenv/plugins/pyenv-virtualenvwrapper
git clone https://github.com/pyenv/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init -)"' >> ~/.bashrc

sansal54

How to create a new user and remove the pi user on a Raspberry Pi

Note: This has been tested in Rasbian Buster released on 2019-06-20

Important: replace jeremy below with whatever username you'd like as your new user.

1. sudo adduser jeremy
   • You will be asked to enter a password
   • When filling out basic information about the user, you may leave it blank

sansal54

1. Go to Sublime Text to: Tools -> Build System -> New Build System 
and put the next lines:

{
    "cmd": ["python3", "-i", "-u", "$file"],
    "file_regex": "^[ ]File \"(...?)\", line ([0-9]*)",
    "selector": "source.python"
}

Then save it with a meaningful name like: python3.sublime-build

sansal54

import 'dart:async';
import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override

sansal54

Raspberry Pi InfluxDB: The solution for IoT Data storage

Raspberry Pi is costeffect linux computer very commonly used for IoT home automation projects.

Here are the 3 problems with conventional databases for IoT data store applications:

• Too much or complex configuration
• Unable to expire data / set retentional policies
• Not tailor made of Time Series Data

sansal54

import PID
import time
import os.path

from OmegaExpansion import AdcExp
from OmegaExpansion import pwmExp

pwmExp.setVerbosity(-1)
pwmExp.driverInit()
adc = AdcExp.AdcExp()