The topic of this design is water level controller,in fact,in allusion to water tank.The main intention is using MCU technology to control the water tank's level with self-motion.Draw the schematic of circuit by the software of protel,use the programming language of C for the tool .
It contains Single-chip(AT89S51) and electromotor which instead of water pump.Compare to the transducer,three wires is replaced,for it used simply.
The system has good application prospects,for its simple structure,stable performance,easy to operate and cheap.