Electronics

marcusbrutus · Joined: 26 Jun 2007 Posts: 1

I intend to build my own remote controlled switch(with a safe frequency so that other wavebands wouldn't activate it by mistake and effective within a 100 meter radius)and I was wondering if anyone can give me some advice. I have seen this kind of remote sold at ebay but i believe it is more of a one way remote switch where the the actual on/off device is plugged into the outlet and the appliance is plugged into it in turn. The remote control is handheld and you just need to turn a button on or off. I am thinking of adopting this approach however I also need a way for this circuit to send a signal to the handheld remote to indicate if the appliance is indeed ON by visually seeing on the remote a lighted LED. Hence, if i press the off button on the remote, the LED turns off, indicating that the appliance is indeed off.

I am a relative novice in electronics and i would appreciate any assistance or advice regarding this matter. Thanks in advance to all those who would take the time to read this and offer me some help.

neon · Joined: 25 Feb 2006 Posts: 590

First of all there is not such a thing as safefty in frequency. you may institute a code into your frquency like for example garage door trnsmitters. they operate withing a cetain range in other word limited power output. A computer router at 2.4gigahz is not safe at all so the range is low level and keep it within your anbient away from external walls. yes you do nedd a rx-tx to work the led for monitor opertion can be simply a current sensing device that transmit a signal that current is indeed flowing. as far as biulding it goes I sugest you buy it it will cost more and troublsome for a novice. but it is a good learning curve. it is upto you. tak care.

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