Infrared Remote Decoder V2.5

Infrared Remote Control Decoder & IR Widget

Instantly Decode Infrared Remote Controls

Have you ever wanted to identify the commands transmitted by an infrared remote without digging through pages of raw timing data? This Infrared Remote Control Decoder makes it simple.

Point your remote at the decoder, press a button, and instantly see the Device ID and Command displayed on your PC. No complicated decoding, no manual bit manipulation—just the information you need. Best of all, the decoder can also function as a standard IR Widget, making it compatible with popular free IR analysis software. Similar to my other decoder here, except this one is Arduino compatible just by adding a capacitor to the board and programming the bootloader. For this you will need an AVR programmer.

Two Operating Modes

Terminal Mode (Recommended)

Terminal Mode is designed for speed and simplicity.

Using any serial terminal program (such as Tera Term) at 115200 baud, simply:

1. Connect the decoder to your PC's USB port.
2. Select the IR protocol.
3. Point your remote at the receiver.
4. Press any button.

The decoder immediately displays the Device ID and Command for the button you pressed.

No waveform analysis. No confusing binary data.

Just the decoded information you actually need.

Create a log file in your terminal program and build a complete backup of your favorite remotes in minutes.

IR Widget Mode

Install jumper J2 and the decoder becomes an IR Widget, compatible with various free IR analysis applications. This allows you to capture complete IR transmissions for advanced analysis and reverse engineering when needed.

Why I Designed It

While experimenting with infrared decoding, I found that many example programs simply display the incoming bits exactly as they are received. Unfortunately, many IR protocols transmit data Least Significant Bit (LSB) first, making the displayed values difficult—or even incorrect—to interpret. This decoder performs the bit reordering internally, presenting the correct Device ID and Command values instead of forcing you to decode them yourself. The result is cleaner, more useful output that simply works.

Supported Protocols

This decoder currently supports:

1. NEC1
2. NEC2
3. REC80
4. RECS80
5. Dish Network
6. Sony 12-bit
7. TDC-38
8. RC5
9. RC6

Two Display Levels

Basic Mode

Displays only the information most users need:

1. Device ID
2. Command

Advanced (Expert) Mode

Displays all decoded information transmitted by the remote, making it ideal for developers, reverse engineers, and electronics enthusiasts.

Why Decode Your Remote?

Saving your remote's commands can save hours of frustration later.

A backup is invaluable if your remote is:

1. Lost
2. Damaged
3. Worn out
4. Dropped one too many times
5. Used as your dog's favorite chew toy

Once you know the Device ID and Command values, you can also:

1. Configure programmable universal remotes
2. Replace discontinued remotes
3. Document your home entertainment equipment
4. Reverse engineer infrared-controlled devices

Perfect For

1. Electronics hobbyists
2. Makers
3. Engineers
4. Repair technicians
5. Home automation enthusiasts
6. Universal remote programmers

What's Included

1. Fully assembled Infrared Remote Control Decoder Ready to use out of the box

Documentation

After your purchase, you'll receive links to the complete user guide along with setup instructions and everything needed to get started. Whether you're backing up your favorite remotes, programming a universal remote, or reverse engineering an infrared device, this decoder provides an easy, accurate, and reliable solution.