Introduction: Turn Any IR Remote Control to a Wireless Control ON/OFF Switch

While building a Toastmaster timer, I needed a switch to act as a Start/Stop switch. I first built it with a long flexible coax cable, but as time went on, it turned out to be impracticable: it could be too long and people could trip on it. So I was looking for a circuit to remotely control the timer without wire, and it almost has to be cheap and built from readily available household components. Let's see what do I have around my house which can function as a wireless device. Eureka! a bunch of  old and abandoned IR remote controls.
The idea is very simple: the IR remote control sends out a stream of 10 bits, and the simplest way so far to convert this stream to a simple pulse is using an One shot circuit to generate a simple pulse when any remote button is pushed.

Step 1: Component List

Very short: 2 IC and 4 passive elements.

555 (8 pin)
TSOP1838 (Vishay IR receiver 38Khz)
Caps: 10uF, 1uF, 0.1uF
Resistors: 18K

Step 2: Schematic

Schematic and a remote control

Step 3: Breadboarding

Step 4: Scope Shot

Blue trace: actual IR code
Yellow trace: output of the 555: single pulse

Comments

author
JoelE28 made it!(author)2016-10-29

sir! what is the watt of resistor?

thanks advance sir

author
Utsav25 made it!(author)2012-05-03

Can I use this circuit for powering on my computer CPU instead of the push on-push-off button?

author
bic made it!(author)2012-05-03

If you know how to design a relay driver circuit. What you need is a driver: ULN2003, and a 5V relay like the TQ2-5V. A nice feature of the ULN2003 is that it has an internal diode, and the logic is TTL.
Bic

author
Haikhal made it!(author)2016-09-09

Hi sir this is receiver or transmitter.
Thank

author
Utsav25 made it!(author)2012-05-03

Can you provide a schematic for this? I am new to electronics so it would be hard for me to design this circuit .thanks

author
rearnold made it!(author)2016-08-25

I know this is an old project but I have a few questions if you could help.

I take it this would work like a momentary contact switch. Seems like the 1microFarad capacitor would generate a .2 sec pulse. If I wanted 1 second would I substitute a 50uF? Also what is the 10uF at the far left of the diagram for? What I'm trying to do is use an IR remote to trip the reset or poweron pin to a builder board like an aurdino, R3, CHIP, etc.

Thanks in advance for any help

BOB

author
wirelessfuture2016 made it!(author)2016-05-15

I made it, but I had to substitute the IR receiver with one that I salvaged from an old DVD player. Works great!

IR RECEIVER.JPG
author
JunezRiyaz made it!(author)2016-05-01

I done with Arduino

https://www.instructables.com/id/Switching-Appliances-Using-Ir-Remote/

5720b33b50e1b6354c0009ea.jpeg
author
UtkarshVerma made it!(author)2015-11-04

the circuit is rapidly turning my LED on/off and not giving one output at once. what should i do?

author
MrSteaker made it!(author)2015-12-14

Well, he's using a timer, so if you do something wrong it's dead

author
AyanM1 made it!(author)2015-11-12

brother plz give me a perfect and simple remot controll ckt via email.Ayan.megamind25@gmail.com..this ckt is not working..I need one.plz brother

author

Can I use it to control an electromagnetic ?

author
kittt made it!(author)2015-08-20

Thanks for the introduction to a 555 timer's Monostable Mode/Operation. This circuit depending on the R and C will give you the delay timer capabilities of an egg timer, cool right ? The governing law is the time constant of t (sec) = 1.1*R (ohm)*C(farad)

There are other modes, including Bistable (of 2 digital outputs, HIGH, and LOW), and Astable(of waveform signal). Try to read [1], [2], and amazing i'ble by [3].

[1]http://www.ti.com/lit/ds/symlink/lm555.pdf

[2]http://www.ti.com/lit/ds/symlink/ne555.pdf

[3]https://www.instructables.com/id/555-Timer/#step8

[4] http://www.dummies.com/how-to/content/electronics-components-555-timer-chip-in-monostabl.html

author
bic made it!(author)2015-04-24

You need to provide a 5V input to the cirduit.

To control the relay you need some sort of driver such as a power transistor or an IC such as ULN2003.

author
kehaldoshi made it!(author)2015-04-24

Where should 5v input in this diagram ?

author
kehaldoshi made it!(author)2015-04-24

Where should 5v input in this diagram ?

author
kehaldoshi made it!(author)2015-04-24

Very great tutorial can u explain hot to connect this circuit with relay module ?

author
johncarlo.cordero2 made it!(author)2015-02-24

Hey Guy, Is the circuit with the 555 IC and TSOP1838 is the circuit for the receiver, then the remote is the transmitter?

author
DanielRB12 made it!(author)2015-02-05

what is the output of the 'out' in this circuit? should i pair it with the + or -? also, i still get a pulse output from the out. i only had a 10k resistor on hand. would this be the case? i need a circuit that switches negative and give a solid output while the ir is receiving a pulse. and is just an open circuit when it is not receiving signal. can you give me a bit more info here? thanks

author
Vaishali44 made it!(author)2015-01-28

I've connected the circuit, as shown in the fig.

What should I do to check its working?

What do I connect in the output?

Should it be a pnp transistor used as a switch?

Please reply.

author
lprasad1 made it!(author)2015-01-16

Please tell me OK circuit because your schematic & step 4 diagram are not matching with circuit diagram

author
nawnit.sen.1 made it!(author)2014-12-19

sir, can u please tell me the use of 10micro F capacitor here

author
bic made it!(author)2014-12-23

It is for noise filtering, and decoupling.

author
nawnit.sen.1 made it!(author)2014-12-19

sir, can u please tell me the use of 10micro F capacitor here

author
hgrancho made it!(author)2014-07-19

sir? can we make it as a switch to a contactor? we badly needed your reply. thanks.

author
bic made it!(author)2014-07-21

This circuit only provides you with a digital output. To operate a AC switch, you need a relay. If you don't know what I am talking about, then don't try to build such a circuit, it may be dangerous messing with 120 or 220V.

author
Samiran made it!(author)2014-11-07

I think you have to use a relay 12V to make and break the contact of 120V AC or 220V AC. But the continuous power required for the relay to latch is much higher than 200mA of current safely handed by 555. I would also suggest to use a Darlington Pair with Blocking diode (TIP120) or Motor driver IC (L293) to handle Eb or Back EMF of the Relay Coil. I will post a circuit if interested.

author
bic made it!(author)2014-07-21

what is a contactor?

author
hgrancho made it!(author)2014-08-17

sorry for the late reply sir. we are planning to make a project which is a wireless switch for a motor. and to make it we need something that is like this circuit. yes , we need a relay to switch the contactor. and the contactor will switch on the motor.

author
hgrancho made it!(author)2014-08-17

we will connect a circuit to a relay in which when it will be trigger by a signal through a ir remote it will energized the relay and closes the contact of the contactor.

author
sumon10 made it!(author)2014-10-18

Hi

author
sapumal.bandara.7 made it!(author)2014-10-06

Sir, Could i know that how to design this circuit to get the out put voltage around 12V ?(And input voltage should also around 12V)

author
Al-MuhaditA made it!(author)2014-09-12

hi, I want to make a circuit wireless attaching plane and control wireless, control by the left and right, above and below and do not forget engine plane means five points of control , Here's my account on Facebook and you please e-mail me * https://www.facebook.com/profile.php?id=100005274... * Thank you

author
BINYROZAR made it!(author)2014-08-11

sir can u plzzz help me for my project...

i want to do a project..that is ""FACEBOOK OR TWITTER THROUGH CONTROLLING A TOY CAR...for that what component required and circuit required,,if there any program required so what it is..i want do on a breadboard ..

i badly needed your reply. thanks.

author
divudi2 made it!(author)2014-06-10

it is great, simple and easy to handle single appliance., great.

author
bic made it!(author)2014-07-09

Simplicity is the design goal here.
Thank you.

author
hgrancho made it!(author)2014-07-19

how do we connect this circuit to an appliance? or is it safe to make it as a switch to an appliace?

author
hgrancho made it!(author)2014-07-19

how do we connect this circuit to an appliance? or is it safe to make it as a switch to an appliace?

author
samighi11 made it!(author)2014-07-07

I will get the parts to make this circuit and test it. What I am confused about is if I make 10 of these (for local "lego city" we are building), how do I tell which button is pressed remotely, so I know what to trigger?

Example: a) will this trigger on with any key press of a remote for this frequency? b) is it keyed to a specific key press on a specific remote+key?

thank you

sa

author
bic made it!(author)2014-07-09

The circuit will trigger on any key press. That's why the design is kept simple.

author
ajinkyadixit made it!(author)2011-07-08

i have completed the circuit but its not working. i m confused about to which pins connecting any component to run(eg. motor,led,etc.) & which pins are connected to ground(-ve).pls tell me about these.

i know that the components one terminal should have to connect to middle pin of tip1838 but which? -ve/+ve?
And where to connect another terminal of component?

whinh pins are connected to power supply?
how to connect the capacitor of 10mF?

pls tell me about these.........................

author
divudi2 made it!(author)2014-06-10

from the front side of TSOP1838 , 1st pin from left is Signal out, 2nd middle pin is for Ground and 3rd right side pin is for +ve voltage.

author
e5frog made it!(author)2011-11-14

Wonder if you have solved this yet...

The little triangular marks means it's connected to ground, when using battery that's usually the negative pole.

author
Daisy+jiajia made it!(author)2014-05-12

Lots of IR ,RF and wireless remote control receiver and transmitter,pls contact me,Skype ID:jia98851,Email: wyl@zdremote.com. http://preview.alibaba.com/product/1861573545-212930085/Sound_sensor_light_remote_control_switch_with_push_cover.html

author
devangs3 made it!(author)2014-02-28

This would work well with the Arduino too, when there would be only a requirement of only level based changes, saves controller code :) good work man!

author
Mohaideen made it!(author)2013-12-27

Hi,

I want to make IR blaster. Its operation is, tv and such that devices are controlled by mobile. have any idea about this...

author
mpep made it!(author)2013-09-04

Simple and effective. Well done.

author
indiasomu made it!(author)2013-04-29

great idea. Thanks for the idea. You are very right using 555 IC there are some false triggers or some time due to sun light. i am so clear with the schimet trigger circuit.
i want to use your circuit to switch ON/OFF the light or fan in my room. can you help me what is the modification i have to do

author
danw2002 made it!(author)2013-01-30

hi, is this a latching On/Off switch, or momentary? i need to just have a momentary on contact to start /stop a recorder remotely. Just need to complete the circuit every time i push the remote, this looks like it is close, just not sure if it is momentary or not ,what kind of range? i have a small canon remote from a camera that would be real nice if i could use...thanks.

author
bic made it!(author)2013-01-30

So long the remote button is pushed, the circuit is activated. Once you release the remote button, the circuit is deactivated. The range is quite far, it would bounce off the wall as well.
Bic

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