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  1. Python - How to make a voltmeter

    Python based 0 - 55v DVM

    Introduction

    You can not have enough Digital Voltage Multimeters, or some other device that measures voltage. Also, I needed an extra voltage measuring device on my boat. This little project teaches you how to make a PIC16F688 read voltage, convert it to an AD value …

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  2. Python - How to make a QR code image with Python

    This script use Tkinter, Image and pyqrcode to make an image of the text entered in the text field.

    from Tkinter import *
import Image
import pyqrcode

''' Functions '''
def makeQRCode():
    qr_data = txt_Input.get()
    url = pyqrcode.create(qr_data)
    url.png('url.png', scale = 8)
    img = Image.open('url.png')
    img.show()

    print …
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  3. Raspberry Pi - blink a LED.md

    This little program toggles an LED on and off forever.

    import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)      # Using PIN function not BOARD number #
GPIO.setwarnings(False)     # Turning off all warnings #

# Run while-loop forever #
while True:
    GPIO.setup(19, GPIO.OUT)
    print "Led on"
    GPIO.output(19 …
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  6. How to make a clock in Python

    This little script shows the time in a window.

    '''Import libraries'''
from Tkinter import *
import time

'''Define a function'''
def tick():
    '''Assign current time to time_string'''
    time_string = time.strftime("%H:%M:%S")

    '''Update the clock labels text'''
    clock.config(text=time_string)

    '''After 200ms run tick'''
    clock.after(200, tick)

'''Make …
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  7. Python - How to load a file and convert it base64

    This python script creates a window with four buttons, two labels and a text widget. The code is fairly good commented and speaks for itself. The coded file will be written as a text file.

    import Tkinter, Tkconstants, tkFileDialog
from Tkinter import *
import tkMessageBox
import base64
import webbrowser

def exit …
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  8. Raspberry Pi - RPM/Tacho meter

    This little program count the rising edges of an IR sensor connected to GPIO 21.

    import RPi.GPIO as GPIO
import time

sensor = 21

GPIO.setmode(GPIO.BCM)
GPIO.setup(sensor, GPIO.IN)

sample = 100
count = 0

start = 0
end = 0

def set_start():
    global start
    start = time.time()


def set_end …
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  9. Raspberry Pi,2 x 16 LCD and web scraping

    This program log on to a website, and get som information.

    The import block:

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    #!/usr/bin/python
import time
from time import gmtime, strftime
import socket
import Adafruit_CharLCD as LCD
import requests

    Assignment:

    time_counter = 0

lcd_rs  = 25
lcd_en  = 24
lcd_d4  = 23
lcd_d5  = 17
lcd_d6 …
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  10. How to ftp-upload a file with Python

    This script uploads a file to an FTP server

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    #!/usr/bin/python
import ftplib

server = 'yourftpserver.something'
username = 'yourusername'
password = 'yourpassword'

ftp_connection = ftplib.FTP(server, username, password)
remote_path = "/home/yourusername/ftp"
ft_connection.cwd(remote_path)
fh = open("filetouploadincludepath …
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