Tkinter reading and setting data in entry box based on increment and timer value

Entry data limit with timer and increment

Displaying incremental data based on timer with step value & upper limit in Entry widget of Tkinter

Column	Details
Data	Displays the final reading after the calculations
Max Limit	Upper limit for Data column value, if increased then the Data value is allowed to change.
Step	Spinbox, the increment value for Data.
Delay	Delay in milli-seconds. Time for updating the readings using the step value

import tkinter as tk
from tkinter import *
my_w = tk.Tk()
my_w.geometry("400x150")  # Size of the window 
my_w.title("www.plus2net.com")  # Adding a title
font1=('Times 24 normal')
l1=tk.Label(my_w,text='Data')
l1.grid(row=0,column=0,pady=3)
l2=tk.Label(my_w,text='Max Limit')
l2.grid(row=0,column=1,pady=3)
l3=tk.Label(my_w,text='Step')
l3.grid(row=0,column=2,pady=3)
l4=tk.Label(my_w,text='Delay:milli second')
l4.grid(row=0,column=3,pady=3)

e1_d=tk.DoubleVar(value=688.4)
e1 = tk.Entry(my_w,   width=6,bg='yellow',
    textvariable=e1_d,font=font1) # added one Entry box
e1.grid(row=1,column=0,padx=5) 

e_max_i=tk.IntVar(value=702)
e_max = tk.Entry(my_w,   width=4,bg='#FFCCCB',
    textvariable=e_max_i,font=font1) # added one Entry box
e_max.grid(row=1,column=1,padx=5) 

sb1_d=tk.DoubleVar(value=0.2)
sb1 = tk.Spinbox(my_w, from_= 0.2, to = 3.0,width=4, increment=0.2,
    textvariable=sb1_d,font=font1)
sb1.grid(row=1,column=2,padx=5)

sb2_i=tk.IntVar(value=500)
sb2 = tk.Spinbox(my_w, from_= 500, to = 5000,width=4, increment=500,
    textvariable=sb2_i,font=font1)
sb2.grid(row=1,column=3,padx=5)

def my_upd(*args):
    i=e1_d.get()+sb1_d.get()
    if(i<=e_max_i.get()): # check upper limit 
        i="{:.2f}". format(i) # formating upto 2 decimal place 
        e1_d.set(i)
        my_w.after(sb2_i.get(),my_upd)
my_upd() # start 
e_max_i.trace('w',my_upd) # if the max limit is changed
my_w.mainloop()  # Keep the window open

Entry Python Tkinter Projects Spinbox DoubleVar

Python Tkinter Button Python- Tutorials

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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Entry Data with increment and timer

Subhendu Mohapatra