The smart plant watering system is my IT 5 project. So, how this smart plant watering system works is when the soil moisture sensor detects that the soil is dry, the IObit will give a command to the relay, and the relay will give a command to the DC pump to pump water to moisten the plants. When the soil is moist, the soil moisture sensor will tell the IObit to stop commanding the relay to pump, and all of that is controlled by the microbit that we have programmed in MakeCode. I have uploaded the video and poster on my website, I hope you like it.