AD3D develop IR device

Infrared, a portion of the electromagnetic radiation spectrum. develop_irdevice(rev001)

Making an InfraRed device. Each time you press a button on an infrared remote control, like the RF remote, a unique hexadecimal code is generated. This is the information that is modulated and sent over IR to the receiver.

In order to decipher which key is pressed, we need to know which code corresponds to each key on the remote with the help of a microcontroller.

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the reciever.

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the transmitter.

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the parts.

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the result.

02/2020. IR reciever.

Making an InfraRed reciever. Let's start by making a reciever to get that hexadecimal code with an Arduino Atmega168P Nano and a simple tsop4838 IR sensor.

You need the IRremote.h library to run this sketch.

Use of the InfraRed reciever. With each press of a button on the IR remote control, this can be seen by the LED on the Arduino Nano flickering at a certain rate, the unique hexadecimal code wil be displayed as result on the serial monitor.
Example: Power = 0x20DF10EF.

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02/2020. IR transmitter.

Making an InfraRed transmitter. Now we know the unique hexadecimal code of our remote, we can make a transmitter.
I'm only interested (for now) in The LG TV Power On/Off, and that is a Hex Value of 0x20DF10EF.
I use the print of the receiver for this and only add a 2-way JST connector for the IR LED. The button can be connected to the same JST connection.

Use of the InfraRed transmitter. Each time you press the button on the IR transmitter the code is sent to the LED. This is the signal that turns the TV on or off.
Simple but it works.
(to be continued)

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02/2020. IR device parts

Electronic parts

x	Name	Info
1	Arduino Nano	Mega168P 5V 16Mhz
1	TSOP4838	IR sensor
1	10K resistor	for the button
1	150ohm resistor	for the IR LED
1	IR LED	for sending the code
1	Push button	to send the code
1	14x20h DS 60x40mm PCB	PCB for the Nano and the connectors

Construction parts and code

x	Name	Info
	JST connectors	...
	electric wire	...
	nuts and bolts	construction material
	Diode Bezel Holder	for the IR LED
x	Name	Info
1	ir_reciever_01.ino	Arduino code for the reciever
1	ir_transmitter_01.ino	Arduino code for the transmitter
1	IRremote library	https://github.com/z3t0/Arduino-IRremote

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02/2020. IR device result

The IR reciever result. With this simple IR receiver it is possible to examine all those different IR remote controls and find out the code. In any case, the result is always useful.