This sensor is available in multiple variants and I’ll be using the ‘HC-SR05’ variant. It can easily detect range between 2 to 450 cm and has 5 different pins, out of which, we don’t need ...

That’s right, these parking sensors are powered by an Arduino board, and the only extra components that were used in the project are a HC SR04 ultrasonic sensor, an active buzzer, and jumper wires.

DIY ESP32 Alarm System Leverages 433 MHz Sensors. April 2, 2020 by Tom Nardi 14 Comments ... He’s using an Arduino Uno and an Ethernet breakout board to hook it up to the network.

After some searching, I ended up using a microcontroller and a piece of code borrowed from the web that I tweaked and adapted. The microcontroller-based concept was chosen because I wanted to scale ...

While Arduino and its libraries are the quickest way to interface with a sensor and blink an LED, sometimes you shouldn’t have to write and compile code to do something exceptionally simple. … ...