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      • Antennas
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      • Speed Controllers (ESC)
      • Drone Transmitter & Receiver
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      • Upto 3 Inch
      • 3 Inch to 7 Inch
      • 8 Inch to 10 Inch
      • 11 Inch and Above
      • Carbon Fiber Propeller
      • Triblades
      • Propeller Accessories
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    • Title-menu
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      • 3D Printer Heatbed and Accessories
      • Limit Switch
      • Stepper Motors and Accessories
      • 3D Printer Display and Controllers
      • Stepper Motor Drivers
    • Mechanical Parts
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
      • 3D Printer Nozzle
      • Lead Screw and Nut
      • Aluminum Extrusion and Accessories
      • Smooth Rods
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      • ORANGE Premium Filaments
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    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 1 Cell (3.7-4.2)V
      • 2 Cell (7.4-8.4)V
      • 3 Cell (11.1-12.6)V
      • 4 Cell (14.8-16.8)V
      • 6 Cell (22.2-25.2)V
    • Orange Li-Ion Batteries
      • 1 cell (3.7V~4.2V)
      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
      • 4 Cell (14.8V~16.8V)
      • 5 Cell (18.5V) & 6 cell (22.2V)
    • Orange Premium BMS
    • Other Batteries
      • TX/RX Li-PO Batteries
      • LifePO4 Battery
      • Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
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      • Battery Connector
      • Battery Harness
      • Power Adapter and Cable
      • Lipo Voltage Checker
      • Parallel Charging Board
      • LiPO Battery Sack, Covers & Mats
  • Motors, Drivers, Actuators
    • Brushed DC Motor
      • Orange Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Geared Motor with Encoder
      • 25 GA Motors
      • Orange OG 555 DC Motor
      • RS 50 Geared Motor
      • Orange RS 775 DC Motor
      • Orange PM33 Motor
      • Orange Square Gear Box Motor
      • Orange Rectangular Gearbox Motor
    • Miscellaneous Motors
      • Servo Motors
      • AC Motor
      • Stepper Motor
      • BO Motors
      • Metal Gear Box Motor
      • Plastic Gear Box Motors
      • Drone Motor
      • Solenoids & Electromagnets
      • Linear Motor/Actuator
      • Cooling Fans
      • Pumps
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      • Motor Mounting Brackets
      • Bearings
      • Couplings
      • JR Servo Cable
      • Futaba Servo Cable
      • Push Rod
      • Other Accessories
    • Motor Drivers
      • Brushed DC Motor Driver
      • Brushless DC Motor Driver (ESC)
      • Stepper Motor Drivers
      • Servo Motor Driver
    • N20 Micro Gear Motor
      • Micro Gear Motor with Encoder
      • Micro Gear Motor without Encoder
      • Vibration Motor
    • Planetary Gear Motor
      • Orange Planetary Gears Motor
      • Orange Planetary BLDC Motors
      • Planetary Gear DC Motors
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      • Raspberry Pi
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  • Original Arduino Boards
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      • ARDUINO NANO 33 BLE
      • Arduino Nano 33 BLE Sense
    • Other Arduino Board
      • Arduino OPLÀ IoT Kit
      • Arduino Tiny Machine learning Kit
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      • ARDUINO MKR WAN 1300
      • Arduino Micro without Headers
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      • LiDAR Sensor
      • RFID Card, Tags & Reader
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      • Generic Ultrasonic Sensors
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      • Line Sensor
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      • Biometric/ECG/EMG Sensor
      • Rotary Encoder
      • Current and Voltage
    • Load, Pressure, Flow & Vibration
      • Water TDS, pH, Flow, Level and Pressure Sensor
      • Vibration/Tilt Sensor
      • Load / Pressure / Force / Flex Sensor
    • Sensor Kits
      • Sensor Kits Link and Image
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      • Smart Vision Camera
      • Thermal Cameras
      • Raspberry Pi Camera
  • IoT and Wireless
    • IoT and Wireless
      • Ai Thinker ESP Wifi Modules
      • ESP WiFi Module
      • Development Board/Kit
      • xBee Zigbee Module
      • LORA WiFi
      • Bluetooth and NRF Modules
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      • Transmitter and Receivers
      • Advance Controller Board
      • Wireless Smart Switches
  • Electronic Modules
    • Displays
      • Seven Segment LED Display
      • LCD Displays
      • HMI LCD Display
      • OLED Display
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      • e-Ink Display
    • Interface Module
      • Programming Module
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      • Memory Interfacing
    • LED and Laser Modules
      • LED Module
      • LASER Module
      • Addressable LED and Drivers
    • Miscellaneous Modules
      • Breakout Board
      • Relay Switch Modules
      • Electronic Switches/Keypads
      • Solar Panels and Controllers
      • Wearable Electronic
      • Real Time Module (RTC)
      • Audio Module/ Amplifier
      • Mux-DeMux & Logic Converter
    • Voltage Regulator
      • Boost Converter (Step-Up )
      • Buck Converter (Step-Down)
  • Electronic Components
    • Semiconductor ICs
      • Microcontroller IC
      • Amplifier ICs
      • Interface IC
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      • Optocoupler IC
      • Other Semicondutor ICs
      • IC Base
    • LED | Plugs / Connectors
      • LEDs Kit
      • LEDs
      • Through Hole LED
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    • Basic Electronic Components
      • Component Kit
      • Resistor
      • Inductor
      • Capacitor
      • Diode
      • Transistor
      • Crystal Oscillator
    • Miscellaneous Component
      • Potentiometer
      • Fuse
      • Mechanical Switches
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
  • Wires and Cables
    • PVC and Silicone Wires
      • PVC Wire
      • 6 to 10 AWG
      • 12 to 16 AWG
      • 18 to 22 AWG
      • 24 to 30 AWG
    • Cables
      • DuPont / Jumper Cable
      • Interfacing Cables
      • JR Servo cable
      • Futaba servo cable
      • FFC Cable
    • Heat Shrink Tubing / Sleeve
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      • 1 mm to 4 mm
      • 5 mm to 10 mm
      • 11 mm and Above
      • PVC Heat Shrink
    • Tools and Accessories
      • Wire Cutter / Stripper
      • Cable Ties
      • Sleeves and Drag Chain
  • Instruments & Tools
    • Measuring Instruments & Tools
      • Oscilloscope & Signal Generator
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      • Other measuring Instruments
      • Soldering Tools and Kits
      • Glue Gun & Sticks
      • Workbench Accessories
    • Power Supply
      • SMPS
      • Transformers
      • Hi-Link Power Supply Module
  • Mechanical
    • Mechanical Robotic Parts
      • Chassis
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • Lead Screw
      • Linear Guide Rail
      • Couplings
      • Bearings
      • Motor Mounting Brackets
      • Gears
    • Wheels
      • Mecanum Wheels
      • Omni Wheels
      • Heavy Duty Wheel
      • RC Car Wheel
      • Pulley Wheel & Track Belt
      • Caster Wheels
    • Carbon Fiber
      • Carbon Fiber Sheets and Strips
      • Carbon Fiber Tubes and Rods
    • Nuts and Bolts
      • Countersunk(CSK) Screws
      • Socket Set Screws (Allen Grub)
      • Socket Head Cap Screw (Allen Bolt)
      • CHHD Screws
      • Nut and Washers
      • Nylon Nuts and Bolts
      • Spacer and Standoff
0 ₹ 0.00
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  • Shop by Brands
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  • Orange Premium Learning Kits
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    • Propellers
      • Upto 3 Inch
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      • 11 Inch and Above
      • Carbon Fiber Propeller
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    • Title-menu
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    • Mechanical Parts
      • 3D Printer Extruder Kit
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      • 3D Printer Nozzle
      • Lead Screw and Nut
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  • Lithium Batteries
    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 1 Cell (3.7-4.2)V
      • 2 Cell (7.4-8.4)V
      • 3 Cell (11.1-12.6)V
      • 4 Cell (14.8-16.8)V
      • 6 Cell (22.2-25.2)V
    • Orange Li-Ion Batteries
      • 1 cell (3.7V~4.2V)
      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
      • 4 Cell (14.8V~16.8V)
      • 5 Cell (18.5V) & 6 cell (22.2V)
    • Orange Premium BMS
    • Other Batteries
      • TX/RX Li-PO Batteries
      • LifePO4 Battery
      • Coin Cell Battery
      • CNC and PLC Machine Battery
    • Battery Accessories
      • Battery Protection Board
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      • Battery Connector
      • Battery Harness
      • Power Adapter and Cable
      • Lipo Voltage Checker
      • Parallel Charging Board
      • LiPO Battery Sack, Covers & Mats
  • Motors, Drivers, Actuators
    • Brushed DC Motor
      • Orange Johnson Geared Motor
      • Johnson Geared Motor (Grade B)
      • DC Geared Motor with Encoder
      • 25 GA Motors
      • Orange OG 555 DC Motor
      • RS 50 Geared Motor
      • Orange RS 775 DC Motor
      • Orange PM33 Motor
      • Orange Square Gear Box Motor
      • Orange Rectangular Gearbox Motor
    • Miscellaneous Motors
      • Servo Motors
      • AC Motor
      • Stepper Motor
      • BO Motors
      • Metal Gear Box Motor
      • Plastic Gear Box Motors
      • Drone Motor
      • Solenoids & Electromagnets
      • Linear Motor/Actuator
      • Cooling Fans
      • Pumps
    • Motor Accessories
      • Motor Mounting Brackets
      • Bearings
      • Couplings
      • JR Servo Cable
      • Futaba Servo Cable
      • Push Rod
      • Other Accessories
    • Motor Drivers
      • Brushed DC Motor Driver
      • Brushless DC Motor Driver (ESC)
      • Stepper Motor Drivers
      • Servo Motor Driver
    • N20 Micro Gear Motor
      • Micro Gear Motor with Encoder
      • Micro Gear Motor without Encoder
      • Vibration Motor
    • Planetary Gear Motor
      • Orange Planetary Gears Motor
      • Orange Planetary BLDC Motors
      • Planetary Gear DC Motors
  • Development Board
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      • Arduino Micro without Headers
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  • Sensors
    • Ultrasonic and Proximity
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      • Autonics Proximity Sensor
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      • RFID Card, Tags & Reader
      • Sound Sensor
      • Generic Ultrasonic Sensors
    • Temp., Humidity, Gas & Environmental
      • Temperature & Humidity Sensor
      • Environmental Sensors
      • Gas and Dust Sensor
      • Thermoelectric Cooler
    • Light and Sound
      • Light/Color Sensor
      • PIR and IR Sensor
      • Line Sensor
    • Biometric, Rotation, and Current
      • Biometric/ECG/EMG Sensor
      • Rotary Encoder
      • Current and Voltage
    • Load, Pressure, Flow & Vibration
      • Water TDS, pH, Flow, Level and Pressure Sensor
      • Vibration/Tilt Sensor
      • Load / Pressure / Force / Flex Sensor
    • Sensor Kits
      • Sensor Kits Link and Image
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      • Thermal Cameras
      • Raspberry Pi Camera
  • IoT and Wireless
    • IoT and Wireless
      • Ai Thinker ESP Wifi Modules
      • ESP WiFi Module
      • Development Board/Kit
      • xBee Zigbee Module
      • LORA WiFi
      • Bluetooth and NRF Modules
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      • Advance Controller Board
      • Wireless Smart Switches
  • Electronic Modules
    • Displays
      • Seven Segment LED Display
      • LCD Displays
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      • OLED Display
      • LED Dot Matrix Display
      • e-Ink Display
    • Interface Module
      • Programming Module
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      • LASER Module
      • Addressable LED and Drivers
    • Miscellaneous Modules
      • Breakout Board
      • Relay Switch Modules
      • Electronic Switches/Keypads
      • Solar Panels and Controllers
      • Wearable Electronic
      • Real Time Module (RTC)
      • Audio Module/ Amplifier
      • Mux-DeMux & Logic Converter
    • Voltage Regulator
      • Boost Converter (Step-Up )
      • Buck Converter (Step-Down)
  • Electronic Components
    • Semiconductor ICs
      • Microcontroller IC
      • Amplifier ICs
      • Interface IC
      • WiFi ICs
      • Clock, Timer and Counter ICs
      • Sensor ICs
      • Optocoupler IC
      • Other Semicondutor ICs
      • IC Base
    • LED | Plugs / Connectors
      • LEDs Kit
      • LEDs
      • Through Hole LED
      • SMD LED
      • RF Connectors
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      • Power Connector
      • Interface Connector
    • Basic Electronic Components
      • Component Kit
      • Resistor
      • Inductor
      • Capacitor
      • Diode
      • Transistor
      • Crystal Oscillator
    • Miscellaneous Component
      • Potentiometer
      • Fuse
      • Mechanical Switches
      • Buzzer/Speaker
      • Aluminium Heat Sink
      • Bread Board and Zero PCB
  • Wires and Cables
    • PVC and Silicone Wires
      • PVC Wire
      • 6 to 10 AWG
      • 12 to 16 AWG
      • 18 to 22 AWG
      • 24 to 30 AWG
    • Cables
      • DuPont / Jumper Cable
      • Interfacing Cables
      • JR Servo cable
      • Futaba servo cable
      • FFC Cable
    • Heat Shrink Tubing / Sleeve
      • Heat Shrink Combos
      • 1 mm to 4 mm
      • 5 mm to 10 mm
      • 11 mm and Above
      • PVC Heat Shrink
    • Tools and Accessories
      • Wire Cutter / Stripper
      • Cable Ties
      • Sleeves and Drag Chain
  • Instruments & Tools
    • Measuring Instruments & Tools
      • Oscilloscope & Signal Generator
      • Ammeter, Voltmeter and Multimeter
      • Other measuring Instruments
      • Soldering Tools and Kits
      • Glue Gun & Sticks
      • Workbench Accessories
    • Power Supply
      • SMPS
      • Transformers
      • Hi-Link Power Supply Module
  • Mechanical
    • Mechanical Robotic Parts
      • Chassis
      • Aluminum Extrusion and Accessories
      • Smooth Rods
      • Lead Screw
      • Linear Guide Rail
      • Couplings
      • Bearings
      • Motor Mounting Brackets
      • Gears
    • Wheels
      • Mecanum Wheels
      • Omni Wheels
      • Heavy Duty Wheel
      • RC Car Wheel
      • Pulley Wheel & Track Belt
      • Caster Wheels
    • Carbon Fiber
      • Carbon Fiber Sheets and Strips
      • Carbon Fiber Tubes and Rods
    • Nuts and Bolts
      • Countersunk(CSK) Screws
      • Socket Set Screws (Allen Grub)
      • Socket Head Cap Screw (Allen Bolt)
      • CHHD Screws
      • Nut and Washers
      • Nylon Nuts and Bolts
      • Spacer and Standoff
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      • Upto 3 Inch
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      • 11 Inch and Above
      • Carbon Fiber Propeller
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    • Title-menu
    • e-Bike Parts and Kits
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    • Mechanical Parts
      • 3D Printer Extruder Kit
      • 3D Printer Extruder Parts and Fans
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      • Lead Screw and Nut
      • Aluminum Extrusion and Accessories
      • Smooth Rods
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      • Nut Insert
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      • Linear Guide Rail
    • Filaments
      • ORANGE Premium Filaments
      • ESUN Filaments
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  • Lithium Batteries
    • Lemon Premium Li-PO Battery
      • 2S Lipo (7.4V ~ 8.4V)
      • 3S Lipo (11.1V ~ 12.6V)
      • 4S Lipo (14.8V ~ 16.8V)
      • 6S LiPo (22.2V ~ 25.2V)
    • Orange LiPO Battery
      • 1 Cell (3.7-4.2)V
      • 2 Cell (7.4-8.4)V
      • 3 Cell (11.1-12.6)V
      • 4 Cell (14.8-16.8)V
      • 6 Cell (22.2-25.2)V
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      • 2 Cell (7.4V~8.4V)
      • 3 Cell (11.1V~12.6V)
      • 4 Cell (14.8V~16.8V)
      • 5 Cell (18.5V) & 6 cell (22.2V)
    • Orange Premium BMS
    • Other Batteries
      • TX/RX Li-PO Batteries
      • LifePO4 Battery
      • Coin Cell Battery
      • CNC and PLC Machine Battery
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      • LiPO Battery Sack, Covers & Mats
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    • Brushed DC Motor
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HomeBlogsDevelopment boardsRaspberry PiGPIO, Input & Output GUI panel using Tkinter

GPIO, Input & Output GUI panel using Tkinter

Raspberry Pi  0  comments  4162 Views  Tuesday, March 12, 2019











The article guides you through Designing a Graphical panel to control all the 21 GPIO’s of Raspberry Pi as an Input or Output Pin.

In this tutorial we will be Designing a Graphical panel through which we will be able to control all the 21 GPIO's of Raspberry Pi as an Input or Output Pin. Credits for the program - scotty3785, Original code link - click here Step 1 - Programming the Raspberry Pi
  • Open the python IDLE in Raspberry Pi and create a new Python file and enter the following code.
#This code has been published by Robu.in 
#visit https://robu.in for more information

import sys

if(sys.version_info[0]<3):
  from Tkinter import *
else:
  from tkinter import *

import RPi.GPIO as pi
import math
#import tkSimpleDialog

class LED(Frame):
"""A Tkinter LED Widget.
a = LED(root,10)
a.set(True)
current_state = a.get()"""
OFF_STATE = 0
ON_STATE = 1

   def __init__(self,master,size=10,**kw):
      self.size = size
      Frame.__init__(self,master,width=size,height=size)
      self.configure(**kw)
      self.state = LED.OFF_STATE
      self.c = Canvas(self,width=self['width'],height=self['height'])
      self.c.grid()
      self.led = self._drawcircle((self.size/2)+1,(self.size/2)+1,(self.size-1)/2)
   def _drawcircle(self,x,y,rad):
       """Draws the circle initially"""
       color="red"
       return self.c.create_oval(x-rad,y-rad,x+rad,y+rad,width=rad/5,fill=color,outline='black')
   def _change_color(self):
       """Updates the LED colour"""
       if self.state == LED.ON_STATE:
          color="green"
       else:
          color="red"
       self.c.itemconfig(self.led, fill=color)
   def set(self,state):
       """Set the state of the LED to be True or False"""
       self.state = state
       self._change_color()
   def get(self):
       """Returns the current state of the LED"""
       return self.state

## Future Functionality
##class gpioEdit(tkSimpleDialog.Dialog):
## """Dialog to be expanded to support advanced gpio features like
## - Pull Up / Pull Down Resistor Config
## - Debounce"""
## def __init__(self, master,gpio):
## top = self.top = Toplevel(master)
## if gpio.isInput():
## title = "Edit Input: %s" %(str(gpio.name))
## else:
## title = "Edit Output: %s" %(str(gpio.name))
## l = Label(top,text=title)
## b = Button(top, text="Submit", command=self.submit)
##
## l.grid(row=0)
## b.grid(row=1)
##
## def submit(self):
## print("Submitted")
## self.top.destroy()

class GPIO(Frame):
   """Each GPIO class draws a Tkinter frame containing:
   - A Label to show the GPIO Port Name
   - A data direction spin box to select pin as input or output
   - A checkbox to set an output pin on or off
   - An LED widget to show the pin's current state
   - A Label to indicate the GPIOs current function"""
   gpio_modes = ("Passive","Input","Output")

   def __init__(self,parent,pin=0,name=None,**kw):
      self.pin = pin
      if name == None:
         self.name = "GPIO %02d" % (self.pin)
         Frame.__init__(self,parent,width=150,height=20,relief=SUNKEN,bd=1,padx=5,pady=5)
         ##Future capability
         ##self.bind('<Double-Button-1>', lambda e, s=self: self._configurePin(e.y))
         self.parent = parent
         self.configure(**kw)
         self.state = False
         self.cmdState = IntVar()
         self.Label = Label(self,text=self.name)
         self.mode_sel = Spinbox(self,values=self.gpio_modes,wrap=True,command=self.setMode)
         self.set_state = Checkbutton(self,text="High/Low",variable=self.cmdState,command=self.toggleCmdState)
         self.led = LED(self,20)
         self.Label.grid(column=0,row=0)
         self.mode_sel.grid(column=1,row=0)
         self.set_state.grid(column=2,row=0)
         self.current_mode = StringVar()
         self.led.grid(column=3,row=0)

         self.set_state.config(state=DISABLED)
         function = self.getPinFunctionName()
         if function not in ['Input','Output']:
            self.mode_sel.delete(0,'end')
            self.mode_sel.insert(0,function)
            self.mode_sel['state'] = DISABLED

## def _configurePin(self, y):
## """Future capability to setup pull up/down"""
## new = gpioEdit(self.parent,self)

    def isInput(self):
       """Returns True if the current pin is an input"""
       return (self.mode_sel.get() == "Input")

    def setMode(self):
        """Sets the GPIO port to be either an input or output
       Depending on the value in the spinbox"""
       if (self.mode_sel.get() == "Input"):
          self.set_state.config(state=DISABLED)
          pi.setup(self.pin,pi.IN)
       elif (self.mode_sel.get() == "Passive"):
          self.set_state.config(state=DISABLED)
          pi.cleanup(self.pin)
       else:
          self.set_state.config(state=NORMAL)
          pi.setup(self.pin,pi.OUT)
          self.updateInput()

    def getPinFunctionName(self):
        pin = self.pin
        functions = {pi.IN:'Input',
                     pi.OUT:'Output',
                     pi.I2C:'I2C',
                     pi.SPI:'SPI',
                     pi.HARD_PWM:'HARD_PWM',
                     pi.SERIAL:'Serial',
                     pi.UNKNOWN:'Unknown'} 
        return functions[pi.gpio_function(pin)]

## Future Functionality
## def setPullUp(self,pullup):
## """Defines the GPIO as having a pull up resistor so the input
## state is inverted when read
## setPullUp(True) - Pin is pulled up
## setPullUP(False) - Pin is not pulled up"""
## self.pullup = pullup

   def toggleCmdState(self):
      """Reads the current state of the checkbox, updates LED widget
      and sets the gpio port state."""
      self.state = self.cmdState.get()
      self.updateLED()
      self.updatePin()

   def updatePin(self):
      """Sets the GPIO port state to the current state"""
      pi.output(self.pin,self.state)

   def updateLED(self):
      """Refreshes the LED widget depending on the current state"""
      self.led.set(self.state)

   def updateInput(self):
      """Updates the current state if the pin is an input and sets the LED"""
      if self.isInput():
         state = pi.input(self.pin)
         self.state = state
         self.updateLED()

class App(Frame):
   def __init__(self,parent=None, **kw):
      Frame.__init__(self,parent,**kw)
      self.parent = parent
      pi.setmode(pi.BCM)
      self.ports = []
     ## Get the RPI Hardware dependant list of GPIO
     gpio = self.getRPIVersionGPIO()
     for num,(p,r,c) in enumerate(gpio):
         self.ports.append(GPIO(self,pin=p))
         self.ports[-1].grid(row=r,column=c)
         self.update()

   def onClose(self):
       """This is used to run the Rpi.GPIO cleanup() method to return pins to be an input
       and then destory the app and its parent."""
       try:
           pi.cleanup()
       except RuntimeWarning as e:
           print(e)
           self.destroy()
           self.parent.destroy()

    def readStates(self):
        """Cycles through the assigned ports and updates them based on the GPIO input"""
        for port in self.ports:
            port.updateInput()

    def update(self):
        """Runs every 100ms to update the state of the GPIO inputs"""
        self.readStates()
        self._timer = self.after(100,self.update)
   def getRPIVersionGPIO(self):
       """Returns the GPIO hardware config for different Pi versions
       Currently supports layout 1 and 3"""
       gpio1 = ((0,0,0),
                (1,1,0),
                (4,2,0),
                (17,3,0),
                (21,4,0),
                (22,5,0),
                (10,6,0),
                (9,7,0),
                (11,8,0),
                (14,0,1),
                (15,1,1),
                (18,2,1),
                (23,3,1),
                (24,4,1),
                (25,5,1),
                (8,6,1),
                (7,7,1))
       gpio2 = ((2,0,0),
                (3,1,0),
                (4,2,0),
                (17,3,0),
                (27,4,0),
                (22,5,0),
                (10,6,0),
                (9,7,0),
                (11,8,0),
                (14,0,1),
                (15,1,1),
                (18,2,1),
                (23,3,1),
                (24,4,1),
                (25,5,1),
                (8,6,1),
                (7,7,1))
       gpio3 = ((2,0,0),
                (3,1,0),
                (4,2,0),
                (17,3,0),
                (27,4,0),
                (22,5,0),
                (10,6,0),
                (9,7,0),
                (11,8,0),
                (5,9,0),
                (6,10,0),
                (13,11,0),
                (19,12,0),
                (26,13,0),
                (14,0,1), 
                (15,1,1),
                (18,2,1),
                (23,3,1),
                (24,4,1),
                (25,5,1),
                (8,6,1),
                (7,7,1),
                (12,8,1),
                (16,9,1),
                (20,10,1),
                (21,11,1))
   if pi.RPI_REVISION == 3:
      gpio = gpio3
      self.parent.title('Raspberry Pi GPIO - A+/B+/2B+')
   elif pi.RPI_REVISION == 2:
        #Change this when I know the pins on RPi GPIO Version 2
        gpio = gpio2
        self.parent.title('Raspberry Pi GPIO - A/B Rev2')
   elif pi.RPI_REVISION == 1:
        self.parent.title('Raspberry Pi GPIO - A/B')
        gpio = gpio1
   else:
        self.parent.title('Raspberry Pi GPIO - Unknown Version')
        ##Assume same config as A+/B+/2B+
        gpio = gpio3
        return gpio

def main():
    root = Tk()
    root.title("Raspberry Pi GPIO")
    a = App(root)
    a.grid()
    """When the window is closed, run the onClose function."""
    root.protocol("WM_DELETE_WINDOW",a.onClose)
    root.resizable(False,False)
   root.mainloop()

if __name__ == '__main__':
   main()
  • Now save the program. We are saving it as gpio.py python file.

Step 2 - Running the program and Understanding the GUI panel
  • Now open terminal and type command sudo python gpio.py to run the program.
  • A panel window will open up like this -
  • From here you can set the status of any GPIO pin from the Corresponding drop down menu as Passive, Input or Output.
  • If you have selected Output, then you will have to mark or unmark the corresponding High/Low box to make the Pin Low or High
  • If you have selected Input, then the low Input will show the the Red colour and if input is high, it will show  Green Colour.
Now you can Explore the more of a GUI with Tkinter. For more on tkinter you can visit - https://wiki.python.org/moin/TkInter

Tags : Raspberry Pi Article

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