Need RF to send 8-bit signal - Electronic Circuits Projects Diagrams Free

Aidis · 15th March 2005, 02:17 PM

Heya , i need help constructing a 8 or at least 4-channel transmitter and receiver.

What it needs to do is very simple.

Transmitter: A Computer LPT Port (~3v output)
Receiver: (A motor driver , it has inputs that can range from 3 - 5v) (L293D)

So when i send 3 volts from the computer port , on the other side the receiver sends 3 volts (from a battery?) into the driver to drive a motor. Any help or at least good websites to read on how to do this?

BF9000 · 15th March 2005, 06:56 PM

I think it would be easiest to just transmit on one channel serially and have 8-bit encoder/decoder IC's on either end. It doesn't look like you will need extremely high speed. Check out some of the solutions at www.rentron.com

Aidis · 15th March 2005, 09:53 PM

Good idea i could use Decoder/Encoder IC's , but the problem is i have no idea how to connect them to the antenna/transmitter/receiver , first time with RC. Does the site you gave have full schematics or just samples for each part?

Phasor · 15th March 2005, 10:12 PM

Perhaps this will be useful for you (4-channel UHF Tx/Rx kit):

http://www.oatleyelectronics.com/kits/k190.html

Aidis · 16th March 2005, 12:07 PM

Would replacing the IC of that circuit with an 8-channel encoder/decoder work? I mean with the tx/rx modules on there?

BF9000 · 17th March 2005, 07:33 AM

Yes, the site I gave you earlier(rentron) does have schematics. The kit from the other site in the last post appears to be the same type of thing. I don't think you will be able to simply drop in 8-bit encoder/decoder ICs. Being that you are just beginning, I would recommend buying a kit that fits your needs exactly. I think this will be a real time saver.

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15th March 2005, 02:17 PM	(permalink)
Aidis	Need RF to send 8-bit signal Heya , i need help constructing a 8 or at least 4-channel transmitter and receiver. What it needs to do is very simple. Transmitter: A Computer LPT Port (~3v output) Receiver: (A motor driver , it has inputs that can range from 3 - 5v) (L293D) So when i send 3 volts from the computer port , on the other side the receiver sends 3 volts (from a battery?) into the driver to drive a motor. Any help or at least good websites to read on how to do this?

15th March 2005, 06:56 PM	(permalink)
BF9000	Just 1 Channel I think it would be easiest to just transmit on one channel serially and have 8-bit encoder/decoder IC's on either end. It doesn't look like you will need extremely high speed. Check out some of the solutions at www.rentron.com

15th March 2005, 09:53 PM	(permalink)
Aidis	:) Good idea i could use Decoder/Encoder IC's , but the problem is i have no idea how to connect them to the antenna/transmitter/receiver , first time with RC. Does the site you gave have full schematics or just samples for each part?

15th March 2005, 10:12 PM	(permalink)
Phasor	Perhaps this will be useful for you (4-channel UHF Tx/Rx kit): http://www.oatleyelectronics.com/kits/k190.html

16th March 2005, 12:07 PM	(permalink)
Aidis	Would replacing the IC of that circuit with an 8-channel encoder/decoder work? I mean with the tx/rx modules on there?

17th March 2005, 07:33 AM	(permalink)
BF9000	Schematics Yes, the site I gave you earlier(rentron) does have schematics. The kit from the other site in the last post appears to be the same type of thing. I don't think you will be able to simply drop in 8-bit encoder/decoder ICs. Being that you are just beginning, I would recommend buying a kit that fits your needs exactly. I think this will be a real time saver.