Simple RF control - Electronic Circuits Projects Diagrams Free

fourpaws · 7th February 2009, 06:45 AM

Hi: I don't know anything about RC controls. But, I need a real, real simple system. Like a keyless entry for a car, I need a simple momentary "on-off" push button that will then control a relay or power transistor to switch 3.6V DC "on" to run a small motor. When the button on the "fob" is released, the relay/transistor shuts "off." No timers needed. The range isn't going to be over 3 feet. The motor will draw a max of 1.2 A. Size and power efficiency are the most important. I'll be using a CR2 battery to run the motor, and whatever coin battery is needed for the transmitter and receiver. Maybe the CR2 can run the receiver as well without causing a continuous drain?

The receiver and motor will be contained in an aluminum housing. However, I could make one end piece of the assembly from plastic so that the receiver would work. I really don't want an antenna dangling about.

Can anyone design and build a prototype for me? I'll pay whatever is reasonable.

Thanks so much!

Don

KMoffett · 7th February 2009, 04:10 PM

fourpaws,

You should go back and edit your post to remove your email address immediately. Bots search these out on forums and spam you. Forums are meant for open discussions, so everyone can benefit, not to get solutions by private email.

"Real simple system" is usually a trade off between "cheap" and "easy"

Google:FOB transmitter receiver

Lots of commercial options.

Ken

fourpaws · 7th February 2009, 06:53 PM

Thanks for the hint about my email. I'll correct that.

What I ment by real simple is I don't need any functions besides "on" when the button is depressed, and "off" when it's released. No timers, etc. A auto system has all kinds of stuff I don't need.

Unit cost is not a concern at this time. Just small and totally reliable.

Don

KMoffett · 7th February 2009, 09:34 PM

With a little hacking this could work. CHILD LOCATOR - Child Alarm Locator - at MyPreciousKid.com

And cheaper: Amazon.com: Child Locator - Brown: Baby

Ken

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7th February 2009, 06:45 AM	#1
fourpaws	Simple RF control Hi: I don't know anything about RC controls. But, I need a real, real simple system. Like a keyless entry for a car, I need a simple momentary "on-off" push button that will then control a relay or power transistor to switch 3.6V DC "on" to run a small motor. When the button on the "fob" is released, the relay/transistor shuts "off." No timers needed. The range isn't going to be over 3 feet. The motor will draw a max of 1.2 A. Size and power efficiency are the most important. I'll be using a CR2 battery to run the motor, and whatever coin battery is needed for the transmitter and receiver. Maybe the CR2 can run the receiver as well without causing a continuous drain? The receiver and motor will be contained in an aluminum housing. However, I could make one end piece of the assembly from plastic so that the receiver would work. I really don't want an antenna dangling about. Can anyone design and build a prototype for me? I'll pay whatever is reasonable. Thanks so much! Don Last edited by fourpaws; 7th February 2009 at 06:54 PM.

7th February 2009, 04:10 PM	#2
KMoffett	fourpaws, You should go back and edit your post to remove your email address immediately. Bots search these out on forums and spam you. Forums are meant for open discussions, so everyone can benefit, not to get solutions by private email. "Real simple system" is usually a trade off between "cheap" and "easy" Google:FOB transmitter receiver Lots of commercial options. Ken __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931)

7th February 2009, 06:53 PM	#3
fourpaws	Real Simple RF Control Thanks for the hint about my email. I'll correct that. What I ment by real simple is I don't need any functions besides "on" when the button is depressed, and "off" when it's released. No timers, etc. A auto system has all kinds of stuff I don't need. Unit cost is not a concern at this time. Just small and totally reliable. Don

7th February 2009, 09:34 PM	#4
KMoffett	With a little hacking this could work. CHILD LOCATOR - Child Alarm Locator - at MyPreciousKid.com And cheaper: Amazon.com: Child Locator - Brown: Baby Ken __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931) Last edited by KMoffett; 7th February 2009 at 09:36 PM.