Arduino Energy Meter Op Amp

We will understand the methodology of measuring current using a shunt resistor and implement a design based on arduino.

Arduino energy meter op amp.

The amplifier is designed to have a gain of 21 so that 0 2 21 4 2v. The core component of the circuit is op amp lm358 which contains two operational amplifiers. It needs to be plugged into a guitar amplifier or any line level input device laptop amp etc some rights reserved you are free to copy share remix and use all material. During my childhood days continuing studies after dusk was a real challenge.

This voltage is very small for a microcontroller to read we use an op amp in non inverting amplifier mode to increase the voltage from 0 2v to higher level for the arduino to read. I think the amp hour feature will help me judge the remaining power in the battery. The tls261 photo diode was also tested. Need to good ambient light shielding around sensor.

I made an arduino volt amp watt meter but i like the amp hour used feature you have a great addition to my meter. In this post we are going to construct a digital ammeter using 16 x 2 lcd display and arduino. Highly affected by ambient light. Play video i belong to a village of odisha india where frequent power cut is very common.

Tls257 detects light in the visible range. Here in this arduino ammeter we will explain about measuring of current by using ohm s law. The output of the second op amp is connected to the first op amp in voltage follower configuration. Trademarks brand names and logos are the property of their respective owners.

It hampers the life of every one. Due to this problem i designed a solar syste. Sensor has the advantage of a built in op amp to ensure good voltage swing and allow direct arduino connection. Published on aug 20 2018 this video guide shows you how to build your own energy meter for use around the home using an arudino and a current transformer ct.

It will be quite interesting as well as a good application of basic science that we studied in our school days. The proposed digital ammeter can measure current ranging from 0 to 2 ampere absolute maximum with reasonable accuracy. Since this meter only monitors the. The pwm signal from the arduino pin d10 is filtered by a low pass filter r2 and c6 and fed to the second operational amplifier.

Arduino based digital ammeter ammeter is used to measure current flow through any load or device. The op amp in non inverting mode is shown above. Low cost 1 31 22 10 10. I use it on my mid drive tandem electric bicycle.