Sorry i forgot to post the | Microcontroller › 8051 › water level controller using 8051 › Sorry i forgot to post the January 5, 2012 at 2:28 pm #7001 Prashant HumbreParticipant Sorry i forgot to post the link …… http://www.engineersgarage.com/microcontroller/8051projects/liquid-level-alarm-AT89C51-circuit