Thursday, June 7, 2012

Metal detector for bikes and cars

Some friends of mine from Illutron is making a project where they need to detect bicycles.
I adapted a circuit for a proximity sensor found online to interface with an Arduino board.
The coil L1 in the circuit above cosnists of 3 windings approx 1.5 x 2 m.
The Arduino board receives a signal proportional to the movement of metal in the vicinity of the coil. This way no calibration is needed and multible objects can be sensed.
L1 can be made from a single 3 wirer cable to make a rugged sensor.
Example of a 3 turn cable loop.


  1. do you have the arduino's program for your metal detector? I need it ): thx

  2. I am very enjoyed for this blog. Its an informative topic. It help me very much to solve some problems. Its opportunity are so fantastic and working style so speedy. metal detector for gold

  3. This comment has been removed by the author.

  4. The world’s first company specialized in detecting gold, raw gold, minerals, groundwater and security systems ECT provides these products with the cheapest prices, the fastest shipping methods and the easiest way to buy a product from the source directly to your door wherever you are in the world. look at this web-site

  5. Best Gold Detectors
    Gold metal detectors Gold Master is a leading company in the field of gold detector, metal detector and groundwater detectors, and it is an exclusive agent for most of the major international metal detectors manufacturers such as Minelab, and Garrett the leading American Gold Metal detector Factory, Mega Detection, and Ger Detect the tremendous German Gold detectors manufacturers in addition to many other American, German and Russian successful brands in various industries.