How to use INA219 current sensor with arduino and Make DIY wattmeter with it

INA219 current sensor

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, …

How to convert resistance to voltage

convert resistance to voltage

Converting resistance to voltage in electronics sometimes are so important because many electronics device such as microcontroller only can read voltage.

How to make Variable Voltage Regulator using LM317

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.

Understanding Voltage Divider

voltage divider

Unfortunately, your arduino can sense voltage only from 0V-5V. That’s why voltage divider come in handy.