Hello all. I am working on a project that will send 4 bits, serially, across a fiber link. The link will only be a few feet. My transmitter and receiver are set up on the breadboard and communicate with each other. However, I cannot figure out how to send these bits across the link.
First, I need to convert my parallel data (4bits) into a serial bit stream. What is the best way to do this? Next, I need to recieve the bits at the receiver and hold them so that the stream can be converted back into parallel data and displayed. I've read tons on modulation and understand the theory, but I've never built a modulator/demodulator. I'm looking for a simple way to transmit the bits. I've looked at a few a circuit examples, but I still don't understand how to take into account clocking, synching of the emitter/receiver. I would rather not use the IR emitter/receiver from a Tv.
I'm thinking around 30kHz. I don't care if it does not run super fast. The device will be used in a situation where speed is not really an issue.
Thanks in advance.
First, I need to convert my parallel data (4bits) into a serial bit stream. What is the best way to do this? Next, I need to recieve the bits at the receiver and hold them so that the stream can be converted back into parallel data and displayed. I've read tons on modulation and understand the theory, but I've never built a modulator/demodulator. I'm looking for a simple way to transmit the bits. I've looked at a few a circuit examples, but I still don't understand how to take into account clocking, synching of the emitter/receiver. I would rather not use the IR emitter/receiver from a Tv.
I'm thinking around 30kHz. I don't care if it does not run super fast. The device will be used in a situation where speed is not really an issue.
Thanks in advance.