| This project uses a backlit, liquid crystal display (LCD), to display the time, date, and the temperature. It uses the BQ3285 to keep track of the time and date. Inside of its case, this chip has its own crystal oscillator to keep an accurate time, and a battery to keep counting when it has no outside voltage. To keep the temperature it uses the DS1620 Integrated Circuit. This chip gets the temperature by using a crystal and measuring the frequency of the vibrations. Inside of the chip it then converts the frequency into degrees Celsius. The bed is being lifted and lowered by a servo motor. The most important part of the circuit is the BASIC Stamp 2 module. It is connected directly or indirectly to everything that is going on. Using the program that was programmed into it, the Stamp takes all of the information from the clock and temperature IC’s, interprets the data, and then sends the code to the LCD display, or the servo motor. |