Unexpected Maker's SQUiXL is a battery-powered ESP32-S3 WiFi and Bluetooth IoT controller and development platform with a ...

With the recorded time and the known distance between them, we can accurately calculate the object's speed using a formula ... As you can see the circuit is very simple and only consists of two IR ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller ... Apart ...

Using this board just to print messages on an LCD module or read values from a temperature sensor ... building circuits and writing codes for hardware control, then buying an Arduino is an ...

such as an LCD or LEDs. The ultrasonic sensor emits high-frequency sound waves and measures the time it takes for these waves to bounce back after hitting an obstacle. Using this data, the Arduino Uno ...

Car Parking Sensor ... circuits. It needs a Code in C language to operate. We are using the Arduino Uno board in this project but you can also use Arduino Nano or a Node MCU. HC-SR04 board is an ...

Experimental data on the free fall of a plastic box through the air was gathered with the help of an ultrasonic distance sensor (HC-SR04 ... The simplest and easy to use circuit board available is the ...

Wireless sensor node is a sensor node with a wireless transmitter. It has one or more sensing elements with amplifier and signal conditioning circuit or a digital ... The project also makes use of ...

We can make an intruder alarm circuit at home which will be almost equally efficient for a specific range of distance and will be very low in cost. This article is about making an intruder alarm using ...