It is a modular design with an Arduino Mega and a lot of I/O for a serious fish tank. There are controls for heaters, fans, lights, wave makers and even top-off valves.

Once control of the fan was sorted, [tinyboatproductions] decide to add an OLED display to show the fan speed and power condition, which is a nice touch. Be sure to check out the build video after ...

10: Arduino Fan Speed Controller I made this project because I wanted a way to automatically control the speed of a DC fan according to the temperature read by a LM35 sensor.

This Instructables guide will show you how you can use an Arduino to control your TV, DVD player, VCR, and countless other home electronics.

I'd like to get up to speed with Matter, so it's good to see a basic introductory tutorial on the wireless protocol on the Arduino website.