SCHEMATICS

Figure 1:  Full Wave Bridge Rectifier—Main Power Source

Figure 2:  The Atmel 90S8515 Microcontroller Unit and its associated ports

Figure 3:  The Temperature Sensor (top half) and Beat Detector (bottom half)
(Click schematic to ENLARGE)

Figure 4:  Fan and lamp driver interface circuits

Figure 5:  Motor driver interface circuit