If you need to measure resistance accurately, a Wheatstone bridge is a simple circuit that allows you to do this by taking a voltage measurement. Despite the simplicity of a Wheatstone bridge, it can be abstract. A Wheatstone bridge is a device used to find the unknown resistance. It is an instrument or circuit made up of four resistors or their equivalent in series which is used to. The Wheatstone bridge, also called the resistance bridge, is used to calculate the unknown resistance by balancing two legs of the bridge, one leg of which includes the unknown resistance component. This method was invented by Samuel Hunter Christie in the book, which was later popularized by Sir Charles. A Wheatstone bridge is an electrical circuit used to measure unknown electrical resistance by balancing two branches of a bridged circuit, one branch of which includes the unknown component. The main advantage of a Wheatstone bridge is its ability to provide extremely precise measurements unlike something like a simple voltage. The goal of my project is to build a sufficiently accurate strain indicator based on the use of a Wheatstone bridge using an Arduino. There is no need to balance the bridge precisely, and in fact as the sensor changes resistance it will unbalance it. The purpose of using the bridge is to reduce the dynamic range between static sensors.