Traffic Light Using a Membrane Keypad and Arduino

In this tutorial we will learn how to control a traffic light using a Membrane Keypad and Arduino.

Also checkout this tutorial: https://www.instructables.com/Arduino-How-to-Control-Traffic-Lights/

Watch the video.

• Arduino UNO (or any other Arduino)
• Membrane Keypad
• Traffic lights module
• Jumper wires
• Visuino program: Download Visuino

Thank you PCBWay for supporting this tutorial and helping users learn more about electronics.

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• Connect "Traffic lights module" pin [GND] to Arduino pin[GND]
• Connect "Traffic lights module" pin [R] to Arduino digital pin[11]
• Connect "Traffic lights module" pin [Y] to Arduino digital pin[12]
• Connect "Traffic lights module" pin [G] to Arduino digital pin[13]
• Connect Membrane Keypad pin [1] to Arduino digital pin[2]
• Connect Membrane Keypad pin [2] to Arduino digital pin[3]
• Connect Membrane Keypad pin [3] to Arduino digital pin[4]
• Connect Membrane Keypad pin [4] to Arduino digital pin[5]

Start Visuino as shown in the first picture Click on the "Tools" button on the Arduino component (Picture 1) in Visuino When the dialog appears, select "Arduino UNO" as shown on Picture 2

• Add "Keypad" component
• Add 3X "Digital Multi Source" component
• Add 3X "Toggle(T) Flip-Flop" component
• Add "Pulse Generator" component

• Select "Keypad1" and in the properties window set "Columns Output Pins" to 3
• Double click on the "Keypad1" and in the "Keys" window drag 3X "Digital Key" to the left side
• Close the window
• Select "DigitalMultiSource1" and in the properties window set "Output Pins" to 3
• Select "DigitalMultiSource2" and in the properties window set "Output Pins" to 3
• Select "DigitalMultiSource3" and in the properties window set "Output Pins" to 3
• Select "PulseGenerator1" and in the properties window select "Enabled" and click on the Pin icon and select "Boolean SinkPin"

• Connect Arduino Digital Pin[2] to "Keypad1" > Rows Pin [0]
• Connect "Keypad1" > Columns Pin [0] to Arduino Digital Pin[3]
• Connect "Keypad1" > Columns Pin [1] to Arduino Digital Pin[4]
• Connect "Keypad1" > Columns Pin [2] to Arduino Digital Pin[5]
• Connect "Keypad1" > Keys > Digital Key1 Pin [Out] to "DigitalMultiSource1" Digital Pin[In]
• Connect "Keypad1" > Keys > Digital Key2 Pin [Out] to "DigitalMultiSource2" Digital Pin[In]
• Connect "Keypad1" > Keys > Digital Key3 Pin [Out] to "DigitalMultiSource3" Digital Pin[In]
• Connect "DigitalMultiSource1" Digital Pin[0] to "TFlipFlop1" pin [Clock]
• Connect "DigitalMultiSource1" Digital Pin[1] to "TFlipFlop2" pin [Reset]
• Connect "DigitalMultiSource1" Digital Pin[2] to "TFlipFlop3" pin [Reset]
• Connect "DigitalMultiSource2" Digital Pin[0] to "TFlipFlop2" pin [Clock]
• Connect "DigitalMultiSource2" Digital Pin[1] to "TFlipFlop1" pin [Reset]
• Connect "DigitalMultiSource2" Digital Pin[2] to "TFlipFlop3" pin [Reset]
• Connect "DigitalMultiSource3" Digital Pin[0] to "TFlipFlop3" pin [Clock]
• Connect "DigitalMultiSource3" Digital Pin[1] to "TFlipFlop1" pin [Reset]
• Connect "DigitalMultiSource3" Digital Pin[2] to "TFlipFlop2" pin [Reset]
• Connect "TFlipFlop1" pin [Out] to Arduino Digital Pin[11]
• Connect "TFlipFlop2" pin [Out] to "PulseGenerator1" Pin[Enabled]
• Connect "TFlipFlop2" pin [Inverted] to "PulseGenerator1" Pin[Reset]
• Connect "PulseGenerator1" Pin[Out] to Arduino Digital Pin[12]
• Connect "TFlipFlop3" pin [Out] to Arduino Digital Pin[13]

In Visuino, at the bottom click on the "Build" Tab, make sure the correct port is selected, then click on the "Compile/Build and Upload" button.

If you power the Arduino UNO module and press the membrane button, the traffic light module will start to change colors according to the pressed button.

Congratulations! You have completed your project with Visuino. Also attached is the Visuino project, that I created for this Instructable, you can download it and open it in Visuino: https://www.visuino.eu