Please help with my circuit

Thread Starter


Joined May 23, 2004
I have constructed a transmitter and a receiver using simple modules. The transmitter has four inputs which are displayed on output pins at the receiver. I need a chip that can display differing high pulses depending on which output pin is activated. For example output pin1 high gives two short pulses (ths could be used to give two short LED flashes), output pin2 gives two longer pulses, ouput pin3 gives one long constant pulse and so on.

I'm quite a newbie at this and was wondering if it is possible to buy ready made chips to do this chip or would it involve some programming? If it would involve programming how easy or difficult would this be?

Any help would be greatly appreciated.




Joined Apr 20, 2004

Have you thought about just using four different leds for the receiver? They go from deep red up to near ultraviolet, and even white. That might be the easy way out.


Joined Jul 27, 2004

The neatest, cheapest way to implement your circuit is using a microcontroller. Why don't you learn to program a PIC? It is not necessarily the easiest way in that it takes time getting to grips with the assembler and the programming, but it is well worth it! It is a good investment, so don't hesitate to learn it.
When you are familiar with the PIC, your little 74XXXs will start to gather dust.