Lasers have been one of the essential technologies used in industries. It is realized that light outperforms radio in terms of speed and density. It has been used for communications whether in scanning barcodes, reading CD’s and DVD’s. This design is a simple data transmitter that uses a DIP switch to support the transmission of data over a transmission medium. This switch withstands extreme shock, vibration, temperature and altitude.
The circuit works when bits are sent across the receiver using an amplified light where signal is received by a phototransistor. The voltage is converted to digital signal that will be read by the receiver. The one shot multivibrator on both ends used to send 8 clock pulses and will received at the receiving end. The first bit starts the clock and the second bit goes to Serial In/Parallel out IC. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Once fired, the outputs are independent of further transitions of the input.
Laser data transmission has various applications that can send voice and video data. This can be made more portable so that users can easily bring the device whenever possible. The device can be easily constructed and integrated to other electronic devices and may be used as a fundamental circuit for electronic finder/trackers.
Laser Data Transmission – [Link]