Recommended IR Emitters

[ploto22]

Hello everybody,
have you an adivise to increase the distance of IR emmition ?
I try the SparkFun Max Power IR LED Kit (10732) connected to Arduino uno, but why a simple IR Remote Control with simply 1.5 volt battery have a very long distance of emmission (3/4 mt) compared to Arduino UNO (Max 2 mt) from the same position ?
May be the type of IR Led ?
In what way i can increase the distance of command with arduino ? (without any Ir extender . . . two device)

Thanks in advance for your reply

Paolo

[AnalysIR]

See the circuit on our blog: http://www.analysir.com/blog/2013/11/22 ... d-circuit/

Ther is no way to increae range from an Arduino, without extra circuitry.

Using an emitter like TSAL6100, will get you extra range.

Other than that it is all about the current passing thru the IR LED & the article above will help.

[AnalysIR]

One more thing....


....making sure the IR carrier frequency matches the targeted Ir receiver will also ensure maximum range and of course pointing the top of the IR LEd at the receiver is a thing some people forget

[ploto22]

Thanks very much for the advise, i will realized the new circuit.
May I use 5v output from arduino for the supply of the circuit or it is necessary an external power supply of 5 volt, i haven't none output connected.

Bye
Paolo

[AnalysIR]

The Arduino's 5V output should be OK. (Assuming a standard Arduino like a UNO or Leonardo, connected via USB)

As mentioned in the blog post, if you use 2 x IR LEds in series you will get twice the output for the same current draw.

Let me know, how you get on.