Fixing Bose Quiet Comfort 15 Headphone Ear Cushions

Bose QC15 HeadphonesI bought the Bose Quiet Comfort QC15 headphones about 5 or 6 years ago. They are great. However, one of the ear pads started coming apart, and no sooner did that one finish unraveling, the other side started. The headphones were still usable but much less comfortable and didn’t stay in place on my head. eBay has ‘replacements’ but the comments regarding the fit were not flattering. I figured it would be worth trying to fix them on my own, because, well, I’d have to order some crappy replacements anyways so I might as well really ruin the originals first.

Continue reading

Hey, Is This Thing On? A Visual Device-Status Indicator Story

DIY humidifier on active indicator LED assembled frontIt’s winter and the air in my house is dry, humidity at about 30%. That’s too low to be comfortable. I’ve lived in my new place for less than one year so the low winter humidity hadn’t been a problem for me yet. Good thing there’s a whole-house humidifier on the forced-hot-air heating system. I’ll just turn that on, right? Wrong. I don’t think this system had ever worked since it was installed…. Continue reading

Open Garage Door Indicator Light

garage door open indicator comicI admit it, I’ve left my garage door open all night… a few times. Doing so leaves all of my precious spare parts exposed for the taking! And maybe more importantly, provides access to the inside of my house…. not a good situation. I’ve been thinking about making some sort of indicator (inside the main house) for when the garage door is open. This would alert the home owner (me) that the garage is open.

After thinking about it for a while, I believe I came up with the simplest way to do this….

Continue reading

Adding a Second PSU to your Desktop PC

2nd atx psu turn on circuitSome Graphics Cards for desktop PCs require a lot of juice to work, sometimes even more than the PSU Power Supply can output. And if you decide to run dual monitors with dual Graphic Cards, then one Power Supply may not be enough. There are a few options to elevate this situation. Purchasing a new hefty PSU would result in a tidy but expensive solution. A more DIY-friendly and significantly less-expensive solution is to add a second PSU (which you probably have kicking around) and delicate the 2nd PSU to your Graphic Card(s).

There is one tricky part to doing this, the PC motherboard controls when the PSU turns on and off. This post will go over how to automatically turn on/off the 2nd PSU with the PC.

Continue reading

CTH hosts Build a Website in the Cloud using Microsoft Azure 10/3 7pm

microsoft-azure_logo

RSVP TODAY

Did you know you can use Microsoft Azure to build a low-or-no cost WordPress instance? Sean will go over the current steps it takes to build a Website using Microsoft’s cloud service called Azure.

BONUS – IF 25 or More People RSVP to this event, one participant will win a Azure Raspberry Pi 3 Kit courtesy of Hackster.

Continue reading

Qi Charging Phone Wasn’t A Failure After All

Qi Wireless Charging Receiver Soldered - Samsung Galaxy Exhilarate SGH-i577A few days ago I posted how my wireless phone charging hack was a failure. I tried soldering in a Qi Receiver into my old school Samsung Galaxy Exhilarte SGH-i577 phone. While I got all the goodies crammed in the phone, the phone got waaaaay hot when charging. So much so that the phone gave a warning saying the battery is over-temp and charging was stopped!

Fast forward a couple days. I figured I could try a different charging pad. Guess what? It worked perfectly and the phone didn’t get hot! I can’t explain it. I’m not a Qi expert but I did poke around on Wikipedia to learn more about the Qi technology. From Wikipedia:

“Regulation of the output voltage is provided by a digital control loop where the power receiver communicates with the power transmitter and requests more or less power.”

Continue reading