Tag Archives: IRremote

IRremoteInfo a Helper utility for troubleshooting IRremote

November 28, 2015AnalysIR BlogAnalysIR, decoding, Infrared, IRremote, Remote controlUser Two

In recent years we have responded to hundreds of supports requests on the Arduino Forum, GitHub and elsewhere for many recurring issues with IRremote – the library for Infrared remote control. As many of the issues are similar we decided it was time to develop a ‘IRremoteInfo a Helper utility for troubleshooting IRremote’ that will help users resolve their own issues or failing that, provide solid support information to those who are providing free support services. Today we release the first version of IRremoteInfo, which prints the settings for most of the relevant parameters within the IRremote library, in the hope that users seeking support can post or upload this information when seeking assistance on-line.

IRremoteInfo a Helper utility for troubleshooting IRremote

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Backdoor uPWM Hack on Arduino for Infrared signals using UART

October 12, 2015AnalysIR Blog, ProjectsAnalysIR, Arduino, Carrier frequency, Infrared, IR, IRLib, IRremote, LearnIR, pwm, uPWMUser Two

In this blog post we follow up on our recent article about generation of infrared PWM from the Photon’s UART where we suggested that it may be possible to achieve something similar with the Arduino. In our previous attempt the Arduino was only able to generate PWM at 40 kHz and 33 kHz using the same approach. After some investigations we discovered a new approach which provides an even better set of results using the Arduino’s USART. Yes, we were able to generate 30, 33, 36, 38, 40 , 56 and surprisingly the illusive 455 kHz which was not possible on the Photon (using this approach). Read on for the details. Readers should also study our original series of articles on ‘softPWM‘ for a better understanding of the source code which can be downloaded below.

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Backdoor uPWM Hack on Photon for Infrared signals using UART

October 2, 2015AnalysIR Blog, Arduino, IR SourcesAnalysIR, Carrier frequency, Duty Cycle, Infrared, IR, IR LED, IR signals, IRLib, IRremote, NEC, Photon, pwm, Remote control, UART, uPWMUser Two

Since we received our Photon several months ago it has been difficult to find a working example of Hardware PWM on the Photon. Initially, we ported our softPWM approach to the Photon, which is excellent. However, we figured it must be possible to use at least one of the spare UARTs on the Photon to achieve our goal. So first we started prototyping on the Arduino and quickly got a working example with some limitations – only 40 kHz and 33 kHz carrier frequencies were possible with the UART without delving into the registers a bit more. Then we moved the code over to the Photon, leveraging our previous softPWM examples, upgraded with the Arduino code – EUREKA! The Backdoor uPWM Hack on Photon for Infrared signals.

uPWM Circuit diagram for Photon using UART

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Preview: A.IR Shield Nano, a high-end Infrared Shield for AnalysIR, IRremote & IRLib

August 31, 2015AnalysIR Blog, Arduino, IR Sources, MakeIR Kits, ProductsA.IR Shield, Air Conditioner, AirCon, AnalysIR, Infrared, IRLib, IRremote, MakeIR, modulation frequency, Nano, Remote control, VishayUser Two

The fifth member of our MakeIR series of devices & kits is the A.IR Shield Nano. This shield works out of the box with AnalysIR and is essentially plug & play , with additional prototyping options. The shield comes attached to an Arduino nano compatible device (clone). Although designed specifically for AnalysIR, users can also upload IRremote, IRLib or any Arduino sketches that run on the Nano. A.IR shield is built with only the highest quality IR components available and boasts dual Infrared emitters with configurable IR Power.

A.IR block diagram — A.IR Shield Nano block diagram

We have provided a link below to the preliminary product data sheet and would welcome feedback on additional, nice to have or missing features, if any. Please read the data sheet for a more detailed description of the A.IR shield. Continue reading Preview: A.IR Shield Nano, a high-end Infrared Shield for AnalysIR, IRremote & IRLib →

Simple Infrared PWM on Arduino, Part 2- RAW IR Signals

June 10, 2015AnalysIR Blog, ArduinoAir Conditioner, AnalysIR, Arduino, Infrared, IR signals, IRLib, IRremote, Mitsubishi, NEC, TVUser Two

In Part 1 of this series, we demonstrated how to send signals using simple Infrared PWM on Arduino. In this Part 2 post we look at sending RAW IR signals – specifically a RAW NEC signal and a longer RAW Mitsubishi Air Conditioner signal. We have also improved the method shown in Part 1 due to some issues we identified when sending ‘real’ signals versus the ‘test’ signal we used before. (More on that later). In Part 3, we will take the signals from this post and show how to send them using their binary (or Hex) representation, which saves lots of SRAM.

Original NEC 32-bit and Mitsubishi 88-bit Signals displayed using AnalysIR

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Simple Infrared PWM on Arduino

May 12, 2015AnalysIR Blog, ArduinoAir Conditioner, Carrier frequency, decoding, Infrared, IR, IR signals, IRLib, IRremote, pwmUser Two

We are often asked on discussion boards, about conflicts between IRremote or IRLib and other Arduino Libraries. In this post, we present a sketch for ‘Simple Infrared PWM on Arduino’. This is the first part in a 3 part series of posts. Part 1 shows how to generate the Simple Infrared PWM on Arduino (AKA carrier frequency), using any available IO pin and without conflicting with other libraries. Part 2 will show how to send a RAW infrared signal using this approach and Part 3 will show how to send a common NEC signal from the binary or HEX value.

Example 56kHz generated Infrared signal @ 50% duty cycle — Example 56 kHz generated Infrared signal @ 50% duty cycle

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Latest release of AnalysIR V1 preview #2 is now available for download

April 17, 2015AnalysIR Blog, IR Sources, MakeIR Kits, ProductsAir Conditioner, AnalysIR, Arduino, decoding, Infrared, IR LED, IR receiver, IRLib, IRremote, MakeIRUser Two

Dublin, Ireland – 17th April 2015. We are happy to announce the latest release of AnalysIR V1 preview #2 is now available for download by our backers & supporters. Existing users of AnalysIR will receive an email with instructions on how to download this version. New users will receive the details as part of the registration process.

A major highlight of this release is full AnalysIR support for our soon to be released LearnIR (IR Learner). LearnIR delivers the best performance available for receiving and sending Infrared signals with excellent accuracy.

View the AnalysIR Product Sheet(PDF)

We would like to extend a big thanks to the many users around the world who have helped with feature requests, new protocols and testing over the last months.

Some Highlights in this latest release include:

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Reverse engineering the Mitsubishi AC Infrared protocol

January 6, 2015AnalysIR Blog, ProjectsAir Conditioner, Arduino, GitHub, Infrared, IR, IRLib, IRremote, LIRC, Mitsubishi, Panasonic, protocol, reverse engineerUser Two

This post is the second in a two-part series about Reverse Engineering AC Infrared protocols. This time we look at the Mitsubishi Air Conditioner IR Protocol. The project was undertaken by two of our users in France (Vincent & Mathieu), with the help of AnalysIR, who collaborated to reverse engineer this Mitsubishi and previously the Panasonic AC Infrared protocol, both examples of the more challenging AC Infrared protocols. Not only did they identify the individual field codes & checksum but also provided some impressive documentation. Detailed information is available via GitHub which is linked below. This 288 data bit Mitsubishi AC Infrared protocol is composed of two consecutive frames. Both frames are always identical for each signal sent. In common with most AC units the complete settings are sent with every IR signal (temperature, fan, swing etc…). AnalysIR was used to record and turn the signal into HEX/Binary format from which the reverse engineering of the individual fields was tackled.

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Reverse engineering the Panasonic AC Infrared protocol

December 27, 2014AnalysIR Blog, ProjectsAir Conditioner, AirCon, AnalysIR, Arduino, decoding, Infrared, IRremote, Panasonic, Remote control, Reverse engineeringUser Two

Recently, two of our users in France (Vincent & Mathieu) collaborated to reverse engineer the Panasonic AC Infrared protocol, one of the more challenging AC Infrared protocols using AnalysIR. Not only did they identify the codes & checksum but also provided some impressive documentation and full source code to help others. Detailed information is available via GitHub which is linked below. This 216 data bit Panasonic AC Infrared protocol is composed of two consecutive frames. The first frame remains constant for every command sent to the AC unit. In common with most AC units the complete configuration is sent with every IR signal (temperature, fan, swing etc…). AnalysIR was used to record and turn the signal into HEX/Binary format from which the reverse engineering of the individual fields was tackled.

AnalysIR - Panasonic AC 216 bit Infrared signal — AnalysIR – Panasonic AC 216 bit Infrared signal

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Controlling Chigo Air Conditioner via Infrared from smart phone

July 6, 2014AnalysIR Blog, Arduino, ProjectsAir Conditioner, AirCon, AnalysIR, Arduino, Chigo, Command Fusion, Global Caché, Infrared, IR receiver, IRLib, IRremote, LIRC, Pronto, USB IR ToyUser Two

Anyone who has tried controlling an Air Conditioner unit using an Arduino, USB IR Toy, RPi or any MCU will know how difficult it can be to record the longer infrared signals they use. Typical TV systems use IR signals circa 32 bits long, while this Chigo AC unit uses a signal with 197 marks & spaces (or 97 data bits). One of our users, Sertunc – from Istanbul in Turkey, reported his success using AnalysIR to easily record the signal timings for his AC unit and sent us the details along with some nice photos. After testing the validity of the recorded signals using an Arduino, he then set about loading the signals onto his Samsung smart phone (models S4, s4 mini, S5 and more supported). This was helped by installing the free ‘Samsung IR – Universal Remote‘ app onto his phone via Google Play.

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