Under construction

Python program to control relays

This program runs, as described on the previous page, to control four relays.

# GUI to control RPI GPIO

# 28.1.17

# by Julian Rogers

# gpio_2

from tkinter import *   #GUI

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)

GPIO.setup(4, GPIO.OUT)

GPIO.setup(17, GPIO.OUT)

GPIO.setup(27, GPIO.OUT)

GPIO.setup(22, GPIO.OUT)

import datetime

import time

import socket           #UDP

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# create the root window

root = Tk()

# modify the window

root.title("Julian's IOT CONTROLLER")

root.configure(bg = "gray")

w, h = root.winfo_screenwidth(), root.winfo_screenheight()

root.geometry("%dx%d+0+0" % (w, h))

# create a frame

app = Frame(root)

app.configure(bg = "gray")

app.grid()

title_lab = Label(app, text = "GPIO CONTROL- Broadcom Numbering", font = ("Arial Bold", 20), fg = "maroon", bg = "gray")

title_lab.grid(row = 1, column = 1, columnspan = 8)

blank_lab = Label(app, bg = "gray")

blank_lab.grid(row = 2, column = 1)

sys_1_but = Button(app, text = "Sys 1(04)", font = ("Arial", 16), fg = "maroon", bg = "light blue")

sys_1_but.grid(row = 3, column = 1)

def on_off_1():

    but_col = sys_1_but.config('bg')[-1]

    if but_col == "light blue":

        but_col = "yellow"

        GPIO.output(4, True)

    else:

        but_col = "light blue"

        GPIO.output(4, False)

    sys_1_but.config(bg = but_col)

sys_1_but.config(command = on_off_1)

sys_2_but = Button(app, text = "Sys 2(17)", font = ("Arial", 16), fg = "maroon", bg = "light blue")

sys_2_but.grid(row = 3, column = 2)

def on_off_2():

    but_col = sys_2_but.config('bg')[-1]

    if but_col == "light blue":

        but_col = "yellow"

        GPIO.output(17, True)

    else:

        but_col = "light blue"

        GPIO.output(17, False)

    sys_2_but.config(bg = but_col)

sys_2_but.config(command = on_off_2)

sys_3_but = Button(app, text = "Sys 3(27)", font = ("Arial", 16), fg = "maroon", bg = "light blue")

sys_3_but.grid(row = 3, column = 3)

def on_off_3():

    but_col = sys_3_but.config('bg')[-1]

    if but_col == "light blue":

        but_col = "yellow"

        GPIO.output(27, True)

    else:

        but_col = "light blue"

        GPIO.output(27, False)

    sys_3_but.config(bg = but_col)

sys_3_but.config(command = on_off_3)

sys_4_but = Button(app, text = "Sys 4(22)", font = ("Arial", 16), fg = "maroon", bg = "light blue")

sys_4_but.grid(row = 3, column = 4)

def on_off_4():

    but_col = sys_4_but.config('bg')[-1]

    if but_col == "light blue":

        but_col = "yellow"

        GPIO.output(22, True)

    else:

        but_col = "light blue"

        GPIO.output(22, False)

    sys_4_but.config(bg = but_col)

sys_4_but.config(command = on_off_4)

# calls a function after given time (not needed yet)

def after(self, ms, func = None, *args):

    """call function after a given time"""

# updates screen every 10 seconds

def task():

    #get_data_remote()

    #clear_feedback()

    root.after(10000, task)

# calls the screen update every 10 seconds

root.after(10000, task)

#---------------------------------------------------------------------------------------

# kick off the window's event-loop

root.mainloop()

A pcb to implement this control system is next…