This article shows how to use several temperature sensors but you can use any kind of integrated circuit that has I2C serial port interface. The advantage is you’ll use only 2 pins on your ...

In this circuit, the infrared emitter IRED1 is modulated by connecting its anode (A) to ~38kHz signal yielded by D9 of the Arduino Uno (TP1) while its cathode (K) to a ~1kHz signal available at D8 of ...

My hardware is slightly different than the example and mine sits at about 2 or 3 and goes up to 14 or 15 with direct touch and about 9 with a piece of tape over it. Found I have plenty of ...

If you’re going to develop another Arduino-compatible board these days, you might as well take a “kitchen sink” approach. The Smart Citizen Kit piles it on, including Wi-Fi, an SD… ...