Faced with a broken USB dongle for our wireless devices, most of us would likely bin the part and order a replacement, after all the diminutive size of those things probably means hard to impossible repairability, right? Well, [The Equalizor] took it as a challenge and used the opportunity to practice his microscopic soldering skills just for funsies.
The wireless adapter in question, which came from one of his clients who accidentally bent it while it was plugged into a laptop, refused to be recognized by a computer under any circumstances. After sliding out the metal casing for the USB plug and snapping off the plastic housing, [The Equalizor] discovered that the slightly bent exterior hid a deeply cracked PCB. Then, with an inspection of the severed traces and lifted components, it was simply a matter of reflowing solder a few times to try to make the board whole again. Once the dongle was confirmed working, a new 3D shell was printed for it, replacing the original which had to be broken off.
It might not seem extraordinary to some people, but this video is a good example to show that repairs to delicate electronics in such a small scale are feasible, and can serve to reduce the amount of electronic waste we constantly dump out. Just because some electronics seem dauntingly elaborate or beyond salvaging, it doesn’t always mean there isn’t light at the end of the tunnel. You can see the work performed on this tiny dongle after the break.
Continue reading “The Art Of USB Dongle Repair”
It must be nice to be one of [kiu]’s colleagues. Some people pass out chocolates or stress balls at work as Christmas gifts, but [kiu] made a bunch of SL dongles to introduce his colleagues to the world of microcontrollers.
The dongles are based on the ATMega88PA and work on three levels to provide something for everyone. The no-experience-necessary option is to plug it in to a USB port and admire the light show sequences. If you know enough to be dangerous, you can remotely control the LEDs from a USB host using [kiu]’s sldtool for Linux or Mac. He originally included examples that visualize CPU utilization and ultimately added a Ruby-based departure countdown for the next outbound train at the nearby station.
If you’re 1337 enough you can flash your own C or assembly code via USB. Holding down the button during power-up lets you use the dongle as a USBasp so it can be flashed with avrdude. [kiu] says the bootloader can’t be unlocked through software and is theoretically unbrickable. Stick around after the break to see the full demo.
Continue reading “SLDongle: The Microcontroller Gift That Keeps On Giving”
Adafruit tears down a set of brainwave cat ears. They’re made by Necomimi and use your brain waves to adjust a pair of plush cat ears on the headgear.
If your desktop computer is sitting on the floor you may have damaged USB dongles by hitting them with your knees. [Megacier] prevents this from happening again by building a flexible dongle link.
Can anyone help [Brian Benchoff] find a datasheet for this International Rectifier 92-O350 so he can fix up his old VT100 terminal?
Here’s a quick example of how to graph data from a Raspberry Pi on the sen.se cloud service.
Have some extra fun with your oscilloscope by displaying any image. This set of conversions starts with a picture and ends with an audio file that will draw it on the scope’s screen.
You’ve probably already heard that the Sikorsky Prize for human powered helicopter has been claimed. If you didn’t see any footage of the flight now’s your chance. [Thanks Adam]
Like many businesses out there, [Joonas Pihlajamaa’s] employer requires him to change his password every few months. Instead of coming up with a complex, yet easy to remember password again and again, he built a small USB device to do the work for him.
He dismantled an old USB memory stick, fitting it with an ATtiny85 with its required components on a small piece of perfboard. Using the knowledge he gleaned from his previous USB HID tinkering, he programmed the ATtiny to act as a USB keyboard which enters his password for him whenever he plugs it in.
The USB dongle not only types his password in for him, it can generate a new password with a few simple keystrokes whenever he desires. Obviously it merely takes someone getting their hands on his USB stick to compromise security, but it does beat a Post-It under the keyboard any day.
Continue reading to see a short video of his USB password dongle in action, and be sure to swing by his site for more details on how it was all put together.
Continue reading “USB Dongle Generates And Enters Your Passwords So You Don’t Have To”