Step 1: What You Will Need
Step 2: Start Visuino, and Select the Arduino UNO Board Type
Step 3: In Visuino Add Components
Step 4: In Visuino Set Components
Step 5: In Visuino Connect Components
Step 6: Generate, Compile, and Upload the Arduino Code
Step 7: Play
Step 8: Circuit

Published January 4, 2020 © LGPL

Force Sensing Resistor (FSR) Arduino Simple Tutorial

In this tutorial we will learn how to detect the force applied to the Force Sensing Resistor (FSR) and display it on the OLED Display + we w

BeginnerProtip1 hour696

Force Sensing Resistor (FSR) Arduino Simple Tutorial

Things used in this project

Hardware components

Arduino UNO

DIYables USB Cable 2.0 Type A/B for Arduino Uno

DIYables OLED Display 128x64 0.96 inch, I2C Interface

Seeed Studio Grove - Round Force Sensor (FSR402)

DIYables Jumper Wires

DIYables Breadboard

DIYables Starter Kit

Optional

DIYables Prototype Expansion Board for Arduino Uno

Optional

Software apps and online services

Arduino IDE

Visuino - Graphical Development Environment for Arduino

Story

In this tutorial we will learn how to detect the force applied to the Force Sensing Resistor (FSR) and display it on the OLED Display + we will set the limits with a green and a red LED.

Watch a demonstration video.

Step 1: What You Will Need

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Arduino UNO (or any other Arduino)
Force sensor
OLED display
RED & GREEN LED
1K ohm resistor
Jumper wires
Breadboard
Visuino program: Download Visuino

Step 2: Start Visuino, and Select the Arduino UNO Board Type

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To start programming the Arduino, you will need to have the Arduino IDE installed from here: https://www.arduino.cc/.

Please be aware that there are some critical bugs in Arduino IDE 1.6.6. Make sure that you install 1.6.7 or higher, otherwise this tutorial will not work! If you have not done follow the steps in this tutorial to setup the Arduino IDE to program Arduino UNO! The Visuino: https://www.visuino.eu also needs to be installed. 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

Step 3: In Visuino Add Components

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Add "SSD1306/SH1106 OLED Display (I2C)" component
Add 2x "Compare Analog Value" component

Step 4: In Visuino Set Components

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Double click on the "DisplayOLED1" component and in the "Elements" dialog window drag "Text Field" to the left
select on the right "Text Field1" and in the properties window set size:3 and Y:40
Select "CompareValue1" component and in the properties window set Compare Type: ctSmallerOrEqualand value: 0.1"CompareValue1" is used to trigger the Green LED, it means whenever the input value is smaller or equal to 0.1 trigger the LED
Select "CompareValue2" component and in the properties window set Compare Type: ctBigger

and value: 0.1 "CompareValue2" is used to trigger the Red LED, it means whenever the input value is bigger than 0.1 trigger the red LED

Step 5: In Visuino Connect Components

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Connect Arduino Analog Out pin [0] to "CompareValue1" component pin [In]
Connect Arduino Analog Out pin [0] to "CompareValue2" component pin [In]
Connect Arduino Analog Out pin [0] to "DisplayOLED1>Text Field1" component pin [In]
Connect "DisplayOLED1" component to Arduino I2C pin [In]
Connect "CompareValue1" component pin [Out] to Arduino digital pin [8]
Connect "CompareValue2" component pin [Out] to Arduino digital pin [7]

Step 6: Generate, Compile, and Upload the Arduino Code

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In Visuino, Press F9 or click on the button shown on Picture 1 to generate the Arduino code, and open the Arduino IDE

In the Arduino IDE, click on the Upload button, to compile and upload the code (Picture 2)

Step 7: Play

If you power the Arduino UNO module, and press the force sensor sensor you should see a changing number on the OLED display and a green LED should light but when you hit the limit the red LED should shine.

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

Step 8: Circuit

Connect Arduino Positive pin [5V] to OLED pin [VCC] and Force sensor pin [1]
Connect Arduino Negative pin [GND] to OLED pin [GND]
Connect OLED Display pin [SDA] to Arduino pin [SDA]
Connect OLED Display pin [SCL] to Arduino pin [SCL]
Connect Force sensor pin [2] to Arduino Analog pin [0]
Connect Force sensor pin [2] to 1K ohm resistor
Connect other side of the resistor to Arduino Negative pin[GND]
Connect Green LED negative pin to Arduino pin [GND]
Connect Green LED Positive pin to Arduino Digital pin [8]
Connect Red LED negative pin to Arduino pin [GND]
Connect Red LED Positive pin to Arduino Digital pin [7]

Code

force-sensor.visuino

{
  "Version": "2",
  "Product": "Visuino Pro - Visual Arduino Programming",
  "Units": [
    {
      "Name": "__OpenWireRootUnit__",
      "*": [
        {
          "X": 448,
          "Name": "Arduino",
          "Instance": {
            "Serial": {
              "*": [
                {
                  "+": "TArduinoHardwareSerial"
                }
              ]
            },
            "+": "TArduinoBoard",
            "AnalogInputReference": "Default",
            "Modules": {
              "*": [
                {
                  "+": "TArduinoEEPROMModule"
                },
                {
                  "+": "TArduinoProcessor328Module"
                },
                {
                  "+": "TArduinoWatchdogTimerModule"
                }
              ]
            },
            "I2CChannels": {
              "*": [
                {
                  "InputPin": {
                    "SourcePins": [
                      {
                        "ID": "__OpenWireRootUnit__.DisplayOLED1.OutputPin"
                      }
                    ]
                  },
                  "+": "TArduinoI2C"
                }
              ]
            },
            "Digital": {
              "*": [
                {
                  "+": "TArduinoAdditionalDigitalSerial0Channel"
                },
                {
                  "+": "TArduinoAdditionalDigitalSerial0Channel"
                },
                {
                  "+": "TArduinoAdditionalDigitalInterruptChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMInterruptChannel"
                },
                {
                  "+": "TArduinoAdditionalDigitalChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMChannel"
                },
                {
                  "DigitalInputPin": {
                    "SourcePin": {
                      "ID": "__OpenWireRootUnit__.CompareValue2.OutputPin"
                    }
                  },
                  "+": "TArduinoAdditionalDigitalChannel"
                },
                {
                  "DigitalInputPin": {
                    "SourcePin": {
                      "ID": "__OpenWireRootUnit__.CompareValue1.OutputPin"
                    }
                  },
                  "+": "TArduinoAdditionalDigitalChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMChannel"
                },
                {
                  "+": "TArduinoBasicDigitalPWMSPI0Channel"
                },
                {
                  "+": "TArduinoAdditionalDigitalSPI0Channel"
                },
                {
                  "+": "TArduinoAdditionalDigitalSPI0Channel"
                },
                {
                  "OutputPin": {
                    "SinkPins": [
                      {
                        "ID": "__OpenWireRootUnit__.CompareValue1.InputPin"
                      },
                      {
                        "ID": "__OpenWireRootUnit__.CompareValue2.InputPin"
                      },
                      {
                        "Name": "__OpenWireRootUnit__.DisplayOLED1.Elements.Text Field1.InputPin",
                        "ID": "__OpenWireRootUnit__.DisplayOLED1.Elements._Item0.InputPin"
                      }
                    ]
                  },
                  "+": "TArduinoCombinedAnalogDigitalChannel"
                },
                {
                  "+": "TArduinoCombinedAnalogDigitalChannel"
                },
                {
                  "+": "TArduinoCombinedAnalogDigitalChannel"
                },
                {
                  "+": "TArduinoCombinedAnalogDigitalChannel"
                },
                {
                  "+": "TArduinoCombinedAnalogDigitalI2C0Channel"
                },
                {
                  "+": "TArduinoCombinedAnalogDigitalI2C0Channel"
                }
              ]
            },
            "SPIChannels": {
              "*": [
                {
                  "+": "TArduinoSPI"
                }
              ]
            },
            "BoardType": "Arduino Uno"
          },
          "Type": "Component",
          "Y": 256
        },
        {
          "X": 256,
          "Name": "DisplayOLED1",
          "Instance": {
            "Elements": {
              "*": [
                {
                  "Name": "Text Field1",
                  "InputPin": {
                    "SourcePin": {
                      "Name": "__OpenWireRootUnit__.Arduino.Digital.Digital[ 14 ]\/AnalogIn[ 0 ].OutputPin",
                      "ID": "__OpenWireRootUnit__.Arduino.Digital._Item14.OutputPin"
                    }
                  },
                  "+": "TArduinoMonochromeGraphicsElementTextFeld",
                  "Size": 3,
                  "Y": 40
                }
              ]
            },
            "OutputPin": {
              "SinkPins": [
                {
                  "Name": "__OpenWireRootUnit__.Arduino.I2CChannels.I2C.InputPin",
                  "ID": "__OpenWireRootUnit__.Arduino.I2CChannels._Item0.InputPin"
                }
              ]
            },
            "+": "TArduinoDisplaySSD1306I2C"
          },
          "Type": "Component",
          "Y": 624
        },
        {
          "X": 784,
          "Name": "CompareValue1",
          "Instance": {
            "Value": 0.100000001490116,
            "OutputPin": {
              "SinkPins": [
                {
                  "Name": "__OpenWireRootUnit__.Arduino.Digital.Digital[ 8 ].DigitalInputPin",
                  "ID": "__OpenWireRootUnit__.Arduino.Digital._Item8.DigitalInputPin"
                }
              ]
            },
            "+": "TArduinoCompareValue",
            "InputPin": {
              "SourcePin": {
                "Name": "__OpenWireRootUnit__.Arduino.Digital.Digital[ 14 ]\/AnalogIn[ 0 ].OutputPin",
                "ID": "__OpenWireRootUnit__.Arduino.Digital._Item14.OutputPin"
              }
            },
            "CompareType": "ctSmallerOrEqual"
          },
          "Type": "Component",
          "Y": 688
        },
        {
          "X": 784,
          "Name": "CompareValue2",
          "Instance": {
            "Value": 0.100000001490116,
            "OutputPin": {
              "SinkPins": [
                {
                  "Name": "__OpenWireRootUnit__.Arduino.Digital.Digital[ 7 ].DigitalInputPin",
                  "ID": "__OpenWireRootUnit__.Arduino.Digital._Item7.DigitalInputPin"
                }
              ]
            },
            "+": "TArduinoCompareValue",
            "InputPin": {
              "SourcePin": {
                "Name": "__OpenWireRootUnit__.Arduino.Digital.Digital[ 14 ]\/AnalogIn[ 0 ].OutputPin",
                "ID": "__OpenWireRootUnit__.Arduino.Digital._Item14.OutputPin"
              }
            },
            "CompareType": "ctBigger"
          },
          "Type": "Component",
          "Y": 784
        }
      ],
      "Type": "Diagram",
      "Selection": [
        "CompareValue1"
      ]
    }
  ],
  "Content": "OpenWire Diagram"
}

Credits

ronfrtek

280 projects • 67 followers

Arduino Fan!

Force Sensing Resistor (FSR) Arduino Simple Tutorial