How to make remote controll switch

Discussion in 'The Projects Forum' started by hsakarp, Aug 24, 2012.

  1. hsakarp

    Thread Starter New Member

    Aug 24, 2012
    1
    0
    HI,
    I would like to make a simple remote control on / off switch for Bulb which is currently running on the 9Volt battery.I dont know where to start .I have searched through the internet the answer am getting is use RELAY.I am not that familiar with electronics.So could anyone help me to get into the right direction to make a Remote switch?



    Regards,
    Hsakarp.
     
  2. absf

    Senior Member

    Dec 29, 2010
    1,492
    372
    For just single channel, you can either use Infra Red or R.F. transmission without encoder and decoder or mcu. Not knowing your electronics background, I would recommend this kits that I've built before.

    http://www.escol.com.my/kits/ES-031.html

    Unfortunately, all the component values are not given.

    Allen
     
  3. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    By remote do you mean 'wireless'? How remote do you mean? 1 foot? 100 feet? 1 mile?
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,103
    3,038
    It's unlikely you will need a relay for a 9v DC light bulb. Relays are very useful to switch large currents and especially for using DC to switch an AC device, because the power for the relay is isolated from the power to your device.

    As asked above, the important thing is to decide which technology to use for "remote" operation; a long wire, IR (like a TV remote control, 10 meter line of sight), or radio (short range, like a garage door, or long range). Those are the most common options, but you could also use lasers or even cellphones or the internet.
     
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