Strain Gauge Arduino Circuit Diagram

A strain gauge is a device that measures the amount of deformation in a material. It is made of a semiconductor material that changes its resistance when it is stretched or compressed. Strain gauges are used in a variety of applications, such as measuring the force applied to a structure, the pressure of a fluid, or the acceleration of a vehicle. In this tutorial, we will show you how to use a strain gauge with an Arduino to measure the weight of an object. We will use a simple circuit that consists of a strain gauge, a resistor, and an Arduino. The strain gauge will be connected to the Arduino analog input, and the Arduino will use the analogRead() function to read the voltage signal from the strain gauge. The voltage signal will be proportional to the amount of deformation of the strain gauge, which in turn will be proportional to the weight of the object. ### Materials * Arduino Uno or compatible * Breadboard * Jumper wires * Strain gauge (100 ohm) * 10 kΩ resistor * Weight (e.g., a book) ### Circuit Diagram The following diagram shows the circuit that we will be using in this tutorial.

### Code The following code shows how to use a strain gauge with an Arduino to measure the weight of an object. ``` #include // Define the analog input pin that the strain gauge is connected to const int strainGaugePin = A0; // Define the resistor that is connected in series with the strain gauge const int resistor = 10000; // Define the variable that will store the weight of the object float weight; void setup() { // Initialize the serial port Serial.begin(9600); } void loop() { // Read the voltage signal from the strain gauge int voltage = analogRead(strainGaugePin); // Calculate the weight of the object weight = (voltage - 512) * 1000 / resistor; // Print the weight to the serial port Serial.println(weight); // Wait for 100 milliseconds delay(100); } ``` ### How to Use the Circuit To use the circuit, follow these steps: 1. Connect the strain gauge to the Arduino according to the circuit diagram. 2. Connect the weight to the strain gauge. 3. Upload the code to the Arduino. 4. Open the serial monitor. 5. Move the weight and observe the weight reading in the serial monitor. ### Conclusion In this tutorial, we showed you how to use a strain gauge with an Arduino to measure the weight of an object. We used a simple circuit that consisted of a strain gauge, a resistor, and an Arduino. The strain gauge was connected to the Arduino analog input, and the Arduino used the analogRead() function to read the voltage signal from the strain gauge. The voltage signal was proportional to the amount of deformation of the strain gauge, which in turn was proportional to the weight of the object.

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