Fresh hacks every day
If hardware manufacturers want to keep their firmware crippling a secret, perhaps they shouldn't mess with Linux users? We figure if you're using Linux you're quite a bit more likely than the average Windows user to crack something open and see what's hidden inside. And so we get to the story of how [Gnif] figured out that the NVIDIA GTX690 can be hacked to perform like the Quadro K5000. The thing … [Read more...]
This paper dial makes selecting current limiting resistors a snap. [Giorgos Lazaridis] came up with the tool, which he describes in detail in the Worklog tab of his writeup. If you want one of your own he also posted a PDF which you can print, cut, and tack together. At this point we can calculate resistor values for LED circuits without looking at reference material. But it wasn't always like … [Read more...]
This one might be an oldie, but it's certainly a goodie. Way back in 2005, [David] and [Charles] needed a project for one of their engineering courses. With so many loose resistors scattered over the lab, they decided to build an automated resistor sorter (PDF warning) to separate these resistors and put resistors of the same value together in the same bin. The electrical and programming … [Read more...]
If you've ever had to organize a bunch of resistors, you'll know why [Anthony] created EESpeak. It's a voice-controlled component look up tool that calculates a component value by listening to you read out color code bands. In his demo video of EESpeak, [Anthony] reads off the color bands of several resistors whilst the program dutifully calculates and displays the value. [Anthony] also … [Read more...]
Here's a tip to keep in your back pocket, you can use a metal file to adjust your resistors. [Gareth] shows off this technique in the video after the break. A metal file is literally all that you need to do some fine tuning. Just make sure you're starting off with a carbon film resistor as this will not work with the metal film variety. His example shows a 10k resistor which is reading just … [Read more...]
Check out this control center which [Awesome0749] built for launching fireworks. From the looks of his stash he's going to be doing quite a bit of celebrating. The control console is clean and offers some safety features, and he just upgraded to an interesting ignition technique. He's using CAT5 cable to connect to the fireworks. At the top of the enclosure you can just make out the edge of the … [Read more...]
The Adafruit blog just posted a neat papercraft resistor calculator. If you haven't yet learned the horribly offensive mnemonic for resistor color codes, now's your chance to have a cheap and portable resistor value reference. This papercraft resistor calculator is the latest in the family of Circuit Playground tools that include a fabulous electronic reference app we reviewed some months ago. … [Read more...]
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