1. Home
  2. Hobby Electronics Basics
  3. Long Range Remote Control

Long Range Remote Control

Hi all, a friend has asked me for advice to remotely control access to his Farm. the Gate is 2km from the house, he wants video (gate -> house) intercom (bidirectional) and non-latching output to the electric gate motor circuitry the Gate motor is powered by 12V charged by Solar Cells

possible solution i thought of was an embedded uPC running a web-cam and a form of VOIP for communications and the gate being driven from the uPC parallel port, all of this communicating to house via

802.11(x). this will require the house side to be controled by either another uPC or a normal PC

although this will work, does anyone out there have a better / simpler / off-the-shelf solution? thanks in advance Rob Zeilinga

Reply to
RobZ
Loading thread data ...

Do you have line of sight to the house? Or perhaps a repeater. Its a long range link situation anyway.

Reply to
Tom Biasi

Use Cell phone technology and Touchtone tech to send commands over the audio link. All available OFF the Shelf ! Yukio YANO

Reply to
Yukio YANO

There are TV cameras with built-in WiFi. Since this is a fixed installation, you could use directional antennas on each end (search wok + antenna on google) to get the required range. At 2km, this is probably a line-of-sight only solution.

Is there an equivalent of the "citizens band" radio service in your country? If so, a unit mounted in a secure, weather-tight box and powered by the 12v used for the gate motor might work. You might want to add a "press to call" button that actually turns on the radio and starts a timer that will turn the radio off a minute or two after the last transmission to reduce the battery drain.

You could add a tone detector to the audio output of the radio at the gate, so that a specific tone (or tone sequence) would activate a relay briefly to open/close the gate.

John

Reply to
John

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.