IRLib Updated to Version 1.5

We are pleased to announce that IRLib has been updated to version 1.5. IRLib is a library for Arduino-based microcontrollers that allows for the receiving, decoding, and sending of infrared signals. These new changes are a step forward in making the library less hardware platform dependent so that it can be more easily used by a variety of microcontrollers. These changes include…

  • New bit-bang option for PWM output frequency setting. Now can use any output pin with no hardware timers. Note:bit-bang output not as accurate as timer-based frequency selection.
  • Major rewrite of IRLibTimer.h to facilitate bit-bang. Separated hardware timer selection and specification into sending and receiving sections in order to implement bit-bang.
  • New IRfrequency class for detecting input frequencies. Previously was a stand-alone special sketch but now is a class including a DumpResults method.
  • New IRfreq and IRrecvDumpFreq illustrate simultaneous detection of frequency and pattern with both an IR learner and IR receiver is connected.
  • New #define USE_IRRECV define can be commented out to completely remove the interrupt driven IRrecv receiver class from the library. This resolves ISR conflicts with other libraries such as Tone() when not using IRrecv class.
  • New #define USE_DUMP define can be commented out to disable DumpResults methods. Saves code space when these methods are not needed.
  • Revised user manuals to document new features and correct previous documentation problems.

Note: The included user manual update is not yet available on the website at but it will be updated shortly. New user manual is available with the library itself as a Microsoft Word .docx file as well as PDF and EPUB versions.
This library is available on GitHub at . For more information on this library see

Resolving SSL Certificate Problems

I’ve been working with the new Pinoccio microcontroller Arduino-like platform for creating internet-of-things devices. One of the many ways you can access devices through a webpage called their headquarters. It is available at and requires a special plug-in for Google Chrome. I had been having great success with the device and suddenly two days ago the webpage quick loading. At first I thought their server was down but eventually realized that I could login using other in my home but not the one that I had been using. It was the classic “why is this thing not like the others?” problem.

The folks at pinocc.Io were tied up in a maker fair and working on other issues and were not able to help me right away. So I did some exploring on my own.

I finally figured out that it was a problem with SSL certificates on a piece of JavaScript. I only figured that out by typing in the URL the JavaScript itself instead of the URL of the webpage. That gave me the following…
Note you can click on any of these images for larger versions.

I clicked on the “MORE” and got the following information.

That told me that the certificate had been revoked and it told me who had issued the certificate but that still tell me very much. The first problem was figuring out where in Google Chrome SSL certificates were handled. Several Google searches later I determined that chrome uses Windows computers default settings. You can get to it in Google Chrome’s settings under the section “proxy settings”. (Gee no wonder it didn’t jump right out at me!) You can also access SSL certificate information from Internet Explorer under Tools… Internet options… content tab. I tried clicking on the “clear SSL state” hoping that it would flush everything out and recheck the certificates. That didn’t help. I clicked on the “Certificates” button but couldn’t find anything related to the certificate issuer “Gandhi Standard SSL, CA” that I had gotten from that more detailed error message.

I browsed around the certificate section in Internet Options but could not find anything under any of the tabs regarding that provider. Then I noticed that where you type the URL there is a little green padlock icon that somehow was beckoning me to do a right-click on it.

When I did I got the following…
The initial tab talks about permissions but I clicked on the Connection tab. Then I clicked on the Certificate Information link. Which gave me this…
The details tab was interesting but didn’t really tell me much so I tried the “Certification Path” tab and got the following
This gave me some other places to look. I started the top with USERTrust and found it under “Trusted Route Certification Authorities” here…
However it would not allow me to remove it. However under “Intermediate Certification Authorities” I found an entry that it would allow me to remove.
After clicking on the “Remove” button and closing everything out, I was able to go back into Google Chrome, access the website, and it loaded perfectly. It apparently went and got a fresh copy of the certificate. Now everything is working fine.

The folks at later explained “We recently added a load balancer which was still configured with the pre
heartbleed ssl cert we revoked. This has been fixed.”

So if anyone is out there reading this whether they are using or not and you are having SSL Certification problems perhaps the steps I’ve shown you will help.