remote control.............

[jackbbot51]

hey everybody,


does anybody know whether it is possible


to sent a sequence of bits ........basically a code/digital signal/waveform


with classic AM or FM transmitter........specifically


there are lots of simple circuits on the web for like FM transmitters

that run off a couple of transistors and a mini microphone


that have range of maybe like 500 feet or so......


but could that be substituted with say circuitry

that would send the code instead of the voice signal......


obviously I would need some kind of shift register to retreive

the code......and send it out.......


but what kind of interfacing would be required......


and what kind of chip would be required to store the code


and could the code be hardwired into some kind of memory chip??


best regards........


and I appreciate the help.........

[Dean Huster]

Of





course





you




could and





it's a lot




easier to




do than how






you've described it.

[Robert Reed]

Have you considered FSK modulation and a simple PLL chip for demod?

[Sambuchi]

http://www.sparkfun.com/commerce/produc ... ts_id=8947

http://www.sparkfun.com/commerce/produc ... ts_id=8945

[CeaSaR]

Don't modems


do that over


phone lines?





CeaSar

[jwax]

Isn't


clear,


compact


and


concise


communication


wonderful?