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Discussion Groups | AVRclub | Re: [AVR club] Radio link
Atmel AVR Microcontroller discussion group.
Radio link - Srdjan Ridanovic - Aug 13 18:10:00 2003
Helo everybody,
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or car ). I design control logic for transmiter with microcontroller and receiver also with microcontroller but I need a shematic for good digital radio link. It doesn't have to be a two way comunication, all I need is to send digital data ( asyncronius ) and to receive it corectly at least for 500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed]
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or car ). I design control logic for transmiter with microcontroller and receiver also with microcontroller but I need a shematic for good digital radio link. It doesn't have to be a two way comunication, all I need is to send digital data ( asyncronius ) and to receive it corectly at least for 500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed]
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
Re: [AVR club] Radio link - Leonard Ilie - Aug 13 18:46:00 2003
You can use radio modules (transmitter+receiver) at 433MHz. I'm not shure if covers
that range. Another posibility is to modulate an audio frequency FSK e.g. 4000Hz for 0 and
8000 for 1. This a.f. modulate RF. At receiver, after decoding, you obtain digital pulses.
I suppose you want to use the UART for this.
Srdjan Ridanovic <ridanovic@rida...> wrote:Helo everybody,
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or car ). I design control logic for transmiter with microcontroller and receiver also with microcontroller but I need a shematic for good digital radio link. It doesn't have to be a two way comunication, all I need is to send digital data ( asyncronius ) and to receive it corectly at least for 500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed] Yahoo! Groups SponsorADVERTISEMENT
To unsubscribe from this group, send an email to:
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---------------------------------
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Srdjan Ridanovic <ridanovic@rida...> wrote:Helo everybody,
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or car ). I design control logic for transmiter with microcontroller and receiver also with microcontroller but I need a shematic for good digital radio link. It doesn't have to be a two way comunication, all I need is to send digital data ( asyncronius ) and to receive it corectly at least for 500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed] Yahoo! Groups SponsorADVERTISEMENT
To unsubscribe from this group, send an email to:
avrclub-unsubscribe@avrc...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
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RE: [AVR club] Radio link - David Levasseur - Aug 14 9:09:00 2003
Hello,
I'm currently building a similar device except that I want it to be a two
way device. First of all, you should check what are the frequencies allowed
in your region. Here, in north america, it is approx. 75MHz for planes and
cars, 72MHz for boats. Also, if you want your device to be "legal", you have
to check the regulation (FCC in north america), to see what is the maximum
power your device can transmit and what frequency allows toys control.
For my part, my first version uses a comercial device (i.e. TX-433 from
LPRS.co.uk or linx technologies). For my second version, I trying to make
the melexis part work (th7122). That part can be programmed to any frequency
between 27 MHz and 930 MHz.
Good luck.
David Levasseur
-----Original Message-----
From: Srdjan Ridanovic [mailto:ridanovic@rida...]
Sent: Wednesday, August 13, 2003 6:10 PM
To: avrclub@avrc...
Subject: [AVR club] Radio link Helo everybody,
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or
car ). I design control logic for transmiter with microcontroller and
receiver also with microcontroller but I need a shematic for good digital
radio link. It doesn't have to be a two way comunication, all I need is to
send digital data ( asyncronius ) and to receive it corectly at least for
500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows
about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed] Yahoo! Groups Sponsor
ADVERTISEMENT
To unsubscribe from this group, send an email to:
avrclub-unsubscribe@avrc...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed]
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
I'm currently building a similar device except that I want it to be a two
way device. First of all, you should check what are the frequencies allowed
in your region. Here, in north america, it is approx. 75MHz for planes and
cars, 72MHz for boats. Also, if you want your device to be "legal", you have
to check the regulation (FCC in north america), to see what is the maximum
power your device can transmit and what frequency allows toys control.
For my part, my first version uses a comercial device (i.e. TX-433 from
LPRS.co.uk or linx technologies). For my second version, I trying to make
the melexis part work (th7122). That part can be programmed to any frequency
between 27 MHz and 930 MHz.
Good luck.
David Levasseur
-----Original Message-----
From: Srdjan Ridanovic [mailto:ridanovic@rida...]
Sent: Wednesday, August 13, 2003 6:10 PM
To: avrclub@avrc...
Subject: [AVR club] Radio link Helo everybody,
I would like to ask you for help.
I'm building a radio controled device ( for controling an aeroplane or
car ). I design control logic for transmiter with microcontroller and
receiver also with microcontroller but I need a shematic for good digital
radio link. It doesn't have to be a two way comunication, all I need is to
send digital data ( asyncronius ) and to receive it corectly at least for
500m ( 1500 ft ) range. If someone has a kit complet it will do, or knows
about someone who does.
Thank you.
Sincerly Srdjan Ridanovic [Non-text portions of this message have been removed] Yahoo! Groups Sponsor
ADVERTISEMENT
To unsubscribe from this group, send an email to:
avrclub-unsubscribe@avrc...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed]
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
Re: Radio Link - Mike - Aug 15 19:43:00 2003
Srdjan,
I am trying to build my own R/C plane as well, and am going to use 900 MHz
modules from Laipac.com. They're $27US each and boast a range of 1800
feet, supposedly. They also have different channels you can switch. These
appear to be the best modules for the price. I have checked out modules
from maxstream.com, Radiotronics, abacom, Linx, and others. Hope this helps.
--Mike
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
I am trying to build my own R/C plane as well, and am going to use 900 MHz
modules from Laipac.com. They're $27US each and boast a range of 1800
feet, supposedly. They also have different channels you can switch. These
appear to be the best modules for the price. I have checked out modules
from maxstream.com, Radiotronics, abacom, Linx, and others. Hope this helps.
--Mike
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )