Hayden has built the internet enabled fishtank with so many features. It has automatic feeding, timer enabled LED lights, matrix display with scrolling messages, ultrasonic depth monitor, thermometer, LCD, underwater cam, speaker, filter and buble control using servo, custom messages and voice, also web based monitor and control.
This liquid controller project can be used to measure & supply exact amount of liquid like water, petrol, kerosene, juice, cold-drinks etc. It uses simple set up for the hardware – an AT89S52 Atmel microcontroller, motor relay, 16×2 LCD and three buttons for input. The system uses time value rather debit counter to measure and […]
This circuit shows you how to build simple Automatic Emergency Light using IC 555. This emergency light automatically turns on when mains fails and turn off when mains power is available. Its charging circuit stops automatically when the battery is fully charged. So you can leave the emergency light connected to AC mains overnight without […]