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Monitoring

100A AC Load Monitoring Circuit using Arduino, Watt Limit, LCD, Alarm, Auto Shutdown

Last Updated on June 3, 2025 by Swagatam Leave a Comment

In this project we are going to make one very useful grid power protection circuit. This will be like a power guard system which we can use in homes or apartments to monitor the wattage of the load and also to cut off the load automatically if it starts taking too much wattage, more than […]

Filed Under: Arduino Projects Tagged With: 100A, AC, Arduino, Load, Monitoring, Watt

Monitoring 220V AC Load Current using Current Transformer [Circuit Diagram]

Last Updated on December 10, 2023 by Swagatam 36 Comments

current sensing transformer

In this post I have explained a circuit which can be used for monitoring or controlling AC 220V load current by sensing the load current through a contactless current transformer. Figure 1 below depicts a circuit diagram designed for a non contact load current sensing through a current transformer, which seemed to work well. It is […]

Filed Under: Security and Alarm Tagged With: 220V, AC, Current, Load, Monitoring, Transformer

Precision Current Sensing and Monitoring Circuit using IC NCS21xR

Last Updated on October 18, 2020 by Swagatam 15 Comments

low side current sensing

If you are looking for current shunt monitors or current sense amplifiers then you have landed at the right page. Current shunt monitor is an instrumentation amplifier which senses the current across a shunt resistor in a system, and converts it into a logical signal output for triggering a switching device such a relay, transistor […]

Filed Under: Sensors and Detectors Tagged With: Current, Monitoring, NCS21xR, Precision, Sensing

Simple Automatic Plant Watering Circuit for Monitoring Soil Moisture

Last Updated on January 2, 2024 by Swagatam 167 Comments

automatic plant water irrigation circuit

This automatic plant watering circuit can be used for automatically sensing soil humidity and triggering a water pump when the ground gets parched below a predetermined level (adjustable). Circuit Operation The circuit is rather straightforward and uses a single IC 555 as the main active component.Referring to the automatic plant irrigation circuit shown below we […]

Filed Under: Water Controller Tagged With: Automatic, Monitoring, Plant, Simple, Soil, Watering

Monitoring State of a Switch (Digital Read Serial) – Arduino Basics

Last Updated on December 5, 2024 by Swagatam Leave a Comment

a 1

This Arduino basics discusses the method of implementing a code through which the ON or OFF state of an external push-button could be read or monitored within the Arduino. Digital Read Serial Here I have explained through an example how to monitor the state of a switch by performing serial communication across your Arduino and your PC via USB. In excess to your […]

Filed Under: Arduino Projects Tagged With: Digital, Monitoring, Read, Serial, State, Switch

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