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Vehicle Speed Detector Circuit for Traffic Police

Last Updated on September 14, 2025 by Swagatam 3 Comments

setup

In this post I will show how to construct a circuit which can measure the speed of any vehicle on roads and highways. The proposed circuit is kept stationary at a place where the vehicles are suspected to over-speed. If any vehicle goes beyond the speed limit, the circuit alerts immediately. We will be looking […]

Filed Under: Arduino Projects Tagged With: Detector, Police, Speed, Traffic, Vehicle

Contactless Sensors – Infrared, Temperature/Humidity, Capacitive, Light

Last Updated on May 8, 2022 by Swagatam 9 Comments

In this article I have explained a few highly advanced contactles sensors such as infrared sensor, temperature sensor, humidity sensor, light sensor which can be used for crucial and sensitive industrial applications, and manufacturing plants. Texas Instruments (TI) introduced the growth of its industry-leading sensing integrated circuits with the inclusion of 4 innovative products that […]

Filed Under: Sensors and Detectors Tagged With: Capacitive, Contactless, Humidity, Infrared, Sensors, Temperature

How Stepper Motors Work

Last Updated on June 26, 2019 by Swagatam 10 Comments

Nema 17 Stepper Motor 2

In this post I have explained about stepper motor. We will be exploring what stepper motor is, its fundamental working mechanism, types of stepper motor, stepping modes, and lastly its advantages and disadvantages. What is stepper motor? Stepper motor is brushless motor; its rotating shaft (rotor) completes one rotation with a determined number of steps. […]

Filed Under: Motor Controller Tagged With: Motors, Stepper, Work

Intruder Position Indicator Security Circuit

Last Updated on January 4, 2024 by Swagatam 17 Comments

In this post I have explained an LED based intruder position indicator circuit which will indicate the position of the burglar throughout the secured corridor as the person tries to sneak past the area.The idea was requested by Mr. Michael. Circuit Objectives and Requirements Your articles are nice, well done. sir can this, close and […]

Filed Under: Security and Alarm Tagged With: Indicator, Intruder, Position, Security

Material Storage Level Controller Circuit

Last Updated on January 4, 2024 by Swagatam 19 Comments

storage

In this post I have explained a simple material storage level controller circuit which can be used for automatically activating and deactivating a storage filling motor whenever the storage container is filled to its stipulated threshold level. The idea was requested by Mr Sladjan. Circuit Objectives and Requirements I need help with the engine control […]

Filed Under: Sensors and Detectors Tagged With: Controller, Level, Material, Storage

433 MHz Remote Infrared Wireless Alarm

Last Updated on January 4, 2024 by Swagatam 6 Comments

A simple infrared wireless alarm circuit can be built using an 433 MHz RF remote control unit a TSOP based IR sensor, I have explained the procedures in detail. In a few of the other posts I have discussed regarding these RF remote control modules. For more info you may go through the following relevant […]

Filed Under: Security and Alarm Tagged With: 433, Alarm, Infrared, Remote, Wireless

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