Turn Any IR Remote Control to a Wireless Control ON/OFF Switch
Intro: 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.
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
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
Yellow trace: output of the 555: single pulse
77 Comments
Topspliff 4 years ago
Can I use the ultra low power cmos 555 and do you know what the standyby current drain would be?
I need the circuit to sit there and use very little power until I turn it on, just curious as this needs to be small battery powered.
Cheers Alan
TOMASA1 6 years ago
with an idea to modify the circuit for another idea
Hassan35yo 6 years ago
How do I control a dc fan by Ir remote control which has five modes: On/Off, High/Slow, Up/Down, Left/Right and On/Off for torch with white LED. Please who can send me a circuit diagram? Thanks for help!!
JoelE28 7 years ago
sir! what is the watt of resistor?
thanks advance sir
Utsav25 12 years ago
bic 12 years ago
Bic
Haikhal 7 years ago
Thank
Utsav25 12 years ago
rearnold 7 years ago
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
UtkarshVerma 8 years ago
the circuit is rapidly turning my LED on/off and not giving one output at once. what should i do?
MrSteaker 8 years ago
AyanM1 8 years ago
ФффффывфыаФ 8 years ago
Can I use it to control an electromagnetic ?
kittt 8 years ago
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
bic 9 years ago
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.
kehaldoshi 9 years ago
kehaldoshi 9 years ago
kehaldoshi 9 years ago
johncarlo.cordero2 9 years ago
Hey Guy, Is the circuit with the 555 IC and TSOP1838 is the circuit for the receiver, then the remote is the transmitter?
DanielRB12 9 years ago
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