Power jack proteus library1/25/2024 ![]() The next component which I will be using is a display. There are libraries from Adafruit which you can download, and use premade functions to read the voltage and current | Click Here To Download Library We are lucky again because we don’t have to go through that trouble. This IC offers an I2C interface, to communicate with the Arduino, and by studying the datasheet, we can use specific commands over the I2C interface, in order to read the voltage and current values. ![]() For this project, I will be using an INA219 IC, which uses a 0.1R resistor as a shunt and can measure voltages up to 32V, and has a current range of 0-3.2A. Luckily, there are modules out there, which make our lives easier. Now, this method is rather crude, and it works only for voltages within 0-5 V, and the ADC of the Arduino which is used to read the voltage drop of the resistor is a bit inaccurate for measuring hundreds of mV only which will drop across the shunt. ![]() You use the analog input to measure the voltage across the load and use a shunt to measure the current via the voltage drop of the shunt resistor. ![]() If you wanted to measure voltage and current of a circuit with an Arduino, the procedure is pretty straight forward. Hello, electronics community! Today I will present you a project which lets you measure the voltage and current of an appliance, and display it together with the power and energy values. ![]()
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