If you want sense electric DC current, then you will have some current sensors options. The current sensor can vary depends on what needed. We can decide which sensor to use based on its capability to sense the current. In this tutorial we will learn how to use INA219. So why INA219? In my opinion, …
Converting resistance to voltage in electronics sometimes are so important because many electronics device such as microcontroller only can read voltage.
The LM317 device is an adjustable voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V.
Unfortunately, your arduino can sense voltage only from 0V-5V. That’s why voltage divider come in handy.