we're going to make a handy tool for the summer. prepare a plastic container. elbow pipe. this is a mist maker/humidifier (a device for making water vapor) and this is a 12V DC fan. DC connector. we make a hole here. make a hole here for the fan. enlarge the hole for the pipe. make a hole for the mist maker cable. Connect the fan cable to the DC connector. 12V DC power supply. 24V DC power supply. add water. mist maker requires 24V voltage. while the fan requires 12V DC voltage. now we measure the temperature using a digital temperature sensor. notice, the temperature is starting to drop. the temperature drops, producing cool air. very easy to make.