How do you find the resistance of a flex sensor?

float Vflex = ADCflex * VCC / 1023.0; Next, we calculate the resistance of the flex sensor using the formula derived from the voltage divider formula and display it on the serial monitor. float Rflex = R_DIV * (VCC / Vflex – 1.0); Serial. println(“Resistance: ” + String(Rflex) + ” ohms”);

What is the range of flex sensor?

The Flex Sensor is a unique component that changes resistance when bent. An unflexed sensor has a nominal resistance of 10,000 ohms (10 K). As the flex sensor is bent the resistance gradually increases. When the sensor is bent at 90 degress its resistance will range between 30-40 K ohms.

How does bend sensor work?

elements. As a variable printed resistor, the Flex Sensor achieves great form-factor on a thin flexible substrate. When the substrate is bent, the sensor produces a resistance output correlated to the bend radius—the smaller the radius, the higher the resistance value.

Where is a flex sensor used?

Applications. Flex sensor is used in wide areas of research from computer interfaces, rehabilitation, security systems and even music interfaces. It is also famous among students and Hobbyists.

How accurate are flex sensors?

They can be as accurate as measuring 5 degrees (depending on the configuration) but as long as you are willing to calibrate it, that is often the difficult bit. Make sure you set it up in such a way that you can replicate it and do your own tests. You may even be able to get it better than the requirements.

What does flex sensor detect?

A flex sensor or bend sensor is a sensor that measures the amount of deflection or bending. Usually, the sensor is stuck to the surface, and resistance of sensor element is varied by bending the surface.

Why are flex sensors used?

A flex sensor is a kind of sensor which is used to measure the amount of defection otherwise bending. The carbon surface is arranged on a plastic strip as this strip is turned aside then the sensor’s resistance will be changed. Thus, it is also named a bend sensor.

What devices use flex sensors?

Other Applications – Flex sensors are common in different technological products, such as automotive and industrial controls, computer peripherals, joysticks, and measuring devices. These are also present in fitness products, musical instruments, and assistive technology systems of modern vehicles.

What does a flex sensor detect?

How can I make a flex sensor at home?

My homemade flex sensor.

1. Lets make it. Take 13cm of 2 thick paper. And also cut a 12 cm of 2 foil paper.
2. Now take a 13cm paper. And rub it with a pencil: Stick the two thick paper together.
3. Give one jumper wire to the foil paper and again to the other one. Connect to the breadboard.

Where are flex sensors used?

What kind of resistance does a bend sensor give?

The Bend Sensor consists of small conductive particles. When the sensor is straight (at rest) they are close together and provide 30 k ohms, nominal resistance value. When bent, the conductive particles go further apart and the resistance value is incresed. The more its bent the further apart the particles move, and the higher resistance it gives.

How does a flex sensor measure deflection and resistance?

A flex sensor or bend sensor is a sensor that measures the amount of deflection or bending. Usually, the sensor is stuck to the surface, and the resistance of the sensor element is varied by bending the surface. Since the resistance is directly proportional to the amount of bend it is used as a goniometer, and often called a flexible potentiometer.

What should I do with my bend sensor?

The Bend Sensor has two small legs that can easily break. We recommend that you secure it by having something steady around the foot of it when you bend it, (fex lego). If you use it in a product, try two have the foot secured and hidden inside the product.