Posted on Nov 9, 2012

This circuit was designed as an aid in parking the car near the garage wall when backing up. LED D7 illuminates when bumper-wall distance is about 20 cm., D7+D6 illuminate at about 10 cm. and D7+D6+D5 at about 6 cm. In this manner you are alerted when approaching too close to the wall. All distances mentioned before can vary, depending on infra-red transmitting and receiving LEDs used and are mostly affected by the color of the reflecting surface. Black surfaces lower greatly the device sensitivity.

Click here to download the full size of the above Circuit.

Leave Comment

characters left:

rakhee sasi   Mar 27, 2008

no pcb layout provided

New Circuits



Popular Circuits

PIC CW Temp Circuit
arduino Glacial Communications