Category Archives: Technical

Mosfets Work

Posted on May 17, 2017 by larry

I am trying to switch 12v using my ESP8266.  The ESP8266 pushes only 3.3V so I had to use a transistor. I ordered some IRLZ44N and it seemed kind of weak. I knew I had a bunch of TIP120 and they … Continue reading →

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Cheap 12v to 5v DC Converter

Posted on May 16, 2017 by larry

I found these 5V chargers at Dollar Tree to work for me when powering an Wemos ESP82166.  Pretty easy to find and cheap.  Start with the USB part and remove that one screw.  Should be come apart pretty easily.  On … Continue reading →

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Getting Into 433Mhz space

Posted on May 15, 2017 by larry

There are a lot of things in the 433Mhz space that I am discovering interesting. One of this is the PIR and door sensors.  I got it and it is working.  Hoping to integrate this all in to openhab 2. … Continue reading →

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Arduino and 433Mhz

Posted on May 11, 2017 by larry

I got the arduino receiving 433Mhz radio. It is cool because there are a lot of devices that I can tap in to that support 433Mhz. I am going to try and get a PIR to signal the arduino. Still … Continue reading →

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ESP-01 and IR

Posted on May 9, 2017 by larry

I don’t know why but it seems like the ESP-01 is really unreliable.  I am trying to build an ESP-01 that can send IR signals. It works sometimes but not others.  I see it on the network. Also seems like … Continue reading →

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Linuxfest Hangover

Posted on May 8, 2017 by larry

As with all conferences I go to, the next few days are full of ideas.  Some actually do come to fruition. One of the things I want to finish, which I been working on forever, is a messaging box.  Over … Continue reading →

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Linuxfest 2017 Conclusion

Posted on May 7, 2017 by larry

Was a great final day of Linuxfest. I did my presentation, it really felt rushed, kind of bummed I could not give more info. Was fun and the attendees were greater than 20. I hope to make my presentation better … Continue reading →

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Headed To Linuxfest

Posted on May 5, 2017 by larry

Late leave time, but we will be on the road soon. All packed and ready to go. Organized this year.  Next year hope to go lighter.  

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ESP8266 Dev Boards Ready

Posted on May 3, 2017 by larry

I got the dev boards all packed up and ready.  Did one final load test to see if it is all good. Batteries are the cheapo Carbon Zinc ones.  According to my calculations they should last the till at least … Continue reading →

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Last Minute Items

Posted on May 2, 2017 by larry

Getting ready with my final items. Presentation is still note done, but I think a few more tweaks and it will be good enough. Got a cool wiring splitter going.  Used the wires in a cat 5 cable to split … Continue reading →

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