Is it possible to display the result on a 7 segment LED display wirelessly to another 7 segment LED display a few metres away?

Remote 7 segment display idea It is possible only with another means of transmission of which infra red or bluetooth is most propably the easiest and better known. The problem arises, that you will need a transmitter and a receiver, for which you will need quite a few complicated circuits. Bluetooth is cheap and relatively easy once you know how to connect it to the LED display, but it would be much better to connect the transmitter to whatever is driving your first display.

This is usually way beyond most electronic hobbyists capabilities. I for one won't even try! It would be cheaper in development time to buy a remote indicator, even two smartphones with appropriate software could be used.

The Nokia 6680 can support Hyperterminal, which means you can control another device with it via bluetooth, cable or infrared A relatively cheap and easy way would be to add an infrared(IR) LED in your display. I.e. You would have 8 LED's to drive.

The last IR LED could then be programmed to transmit a different code for every "digit" you display. (Try Morse code, but remember that it have to be real fast. ) Your IR receiver needs a programmed decoder on te other side to interpret code and re-convert it back to 7 segment display.

The electronics for this can be found in any old ball mouse, but the "lens" in front of the LED's need to be modified to transmit over longer distances. An old TV remote have the best IR LED's for a transmitter, but they are cheap anyway Some cheap digital two way radios have the capability of sending digital data over the air, so it could be possible to set this up if you know electronics and programming More Ideas There are cheap low-power FM transmitter circuits or pre-built boards available, and one-chip FM receivers. Or homebrew one.

Or AM circuits. Stay legal with the FCC, though Use an standard IR receiver designed for remote control applications. These are cheap and include a 32-40 kHz modulator to avoid interference from other light sources.

You can even hack a universal remote control and allow for other commands. Or modulate on your own with IR LED and IR photodiode Use a Zigbee chip. (similar to Bluetooth concept, but even lower power, designed for limited update rates) Check with robotics enthusiasts.

They need similar devices all the time.

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