LED tilt level

Posted on Apr 22, 2012

This electronic level uses two LED indicators instead of an air bubble. If the surface is tilted to the right, one LED lights; if it's tilted to the left, the other LED lights. When the surface is level, both LEDs light. It uses two unidirectional mercury switches, SI and S2. The unidirectional mercury switch has one long electrode and one short, angled electrode.

LED tilt level
Click here to download the full size of the above Circuit.

The pool of mercury "rides" on the long electrode and makes contact between the two electrodes if the unit is held in a horizontal position.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Advanced Power Switcher
    Count Down Timer Relay with 555
    5W PLL FM Transmitter (PIC16F627A)
    2x300W or 600W Power audio Amplifier
    Cold-Cathode Fluorescent-Lamp Supply
    The Design of Car Audio Power Amplifier
    pulse width modulated (PWM) controller for high current
    I2S isolator
    PIC16F628 4 RGB LED PWM Controller
    Chloroplast type 1 SE