Laser Target Finder circuit

Posted on Sep 3, 2012

Thanks to the S6986, the circuit is very simple and requires few components. D2, D3, D5 and D6 forms a bridge rectifier allowing to plug the sensor connector brick in any direction. C1 filters power supply, it must be connected near to IC1 to bypass it properly. IC1 is the Hamamatsu S6986 sensor, the `heart` of this sensor. LED output drives the laser with a 1/16 duty cycle, and the included photodiode collects reflected light. Internal processing circuitry correlates the received light to the emitted light, this enables very reliable detection even with high ambient light.

Laser Target Finder circuit
Click here to download the full size of the above Circuit.

When S6986 receives enough reflected light, its output goes to the low level (R1 limits the current), and the RCX sensor input becomes "true". Note that this sensor only returns a boolean value, "true" if the target is in laser beam, &

Leave Comment

characters left:

New Circuits



Popular Circuits

Ir Receivers
Video DVM circuit
Sawtooth Generator For Sweep Generators
Human-Computer Interface Technology 1
Complete SS Laser Power Supply Schematics
MAX2664/MAX2665 VHF UHF Low Noise Amplifiers Circuit
Electrification Circuit Unit
Full-Wave Rectifier circuit
LED Modulation Circuits
Eliminate hum instrumentation amplifier INA101 circuit
CD4520 CD4511 CD4067 digital automatic inspection circuit diagram