My aquarium light project uses an Arduino Nano to control 4 LED strips through PWM. As demonstrated in the RGB LEDS - Colorful Arduino Experiment, N-M...

@americanmikeA photo transistor mounted inside a tube is good as a sensor. The tube would narrow the field of view to limit effects of other light sou...

@chumley If you put something which floats on the water, you could sense the distance to that object using the HC-SR04 sensor. A project was publish...

Hello, I am Mike and live in Indiana, USA. I am a retired engineer having worked in the electronics manufacturing sector. My robotics interest centers...