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... for farming- use temperature sensors and humidity sensors to ensure that the temperature and water levels remain at a suitable level for the plants. When the temperature is rising to high a signal is sent to a computer, which sends a signal to a motor to open the windows. If the temperature is too low the computer will tell the motor to shut the windows. If the air is too dry for the plants a signal is sent to the computer, which sends a signal to the water jets and turns them on. * Traffic Lights also use sensors to monitor the flow of traffic so the changing of the lights can be changed. Either pressure pads or movement sensors can be used to count the number of cars that pass through the lights at each time of day. Instructions for waterslide This set of instructions refers to sending someone through my slide ...