Here is the diagram of my Arduino infrared close proximity sensor. As you can see, the core part of my experimental setup is an Arduino UNO, but other compatible microcontrollers can also be employed.

This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno clones, has within it a watchdog timer that clicks over at a rate of ...

It lets you use not just one or three Arduino boards but seven — Micro, Pro Mini 3.3V, Pro Mini 5V, Leonardo, Uno R3, Nano R3, and Mega 2560 R3. There are also over 200 sensors and modules ...

you can just build it a custom sensor with an Arduino Uno. This paper shredder bin monitor is an easy Arduino project for beginners to get into. It uses an ultrasonic sensor, which is placed ...