What’s your favorite color? Don’t tell us, Tweet it to [Sebastian's] favorite color Twitter display and you’ll be contributing to the artwork hanging on his wall. This answers a very important question, what do you do with your projects after they’re completed? For us the best part is the planning and building. Once it’s done the …
Visualize Twitter with an LED matrix
Building RAM into Veronica – the 6502 computer
It seems strange that RAM is being added to a computer so late in the build, but [Quinn Dunki] must have had it in the back of her mind the whole time because it turns out to be a rather painless experience. For those of you keeping score, this makes her Veronica project Turing complete. …
Images carrying an encrypted data payload
This is a tidy looking banner image. But according to [Ian] it contains 52KB of source code. You can’t just read out all of that data. Well, you can but it will be gibberish. Before hiding the bits in plain sight he encrypted them with two different keys. He’s using AES-256 encryption to keep his data …
Add features (that should have already been there) to an EPROM programmer
[Morten Overgaard Hansen] has a cheap EPROM programmer which he uses to program chips for retro gaming (among other things). He was surprised that although the device includes a 40-pin ZIF socket it seems to lack the ability to program 16-bit chips. He figured he could get it to play ball if he put in …
Building a wooden air raid siren
A while back, [Matthias] was working on a dust collector for his shop. Being the master woodsmith he is, he decided to build a dust collection system out of wood. Everything worked out in the end, but in creating wooden impellers and blowers, he discovered his creations made a lot of noise. For this project, …
Coding new parts in Eagle
Making new parts in Eagle CAD isn’t the easiest thing in the world, especially if you’re dealing with a package that isn’t in one of the default libraries. Usually, making a new part means digging out a datasheet and drawing a new part in Eagle. A better solution would be to generate new parts with …
Interview: Another Kickstarter round for the B9Creator
Nearly a year ago, the 3D printing scene saw a few new printers based on a technology other than squirting plastic out of a nozzle. These printers used DLP projectors underneath a vat of UV curing resin to build objects one layer at a time with incredible resolution. Probably the most successful of these printers …
Treasure trove of swarm robotics research
The screen capture above shows a group of swarm robots working together to move the blue box from the left side of the frame over to the right. It’s just one of many demonstrations shown in the video clip after the break. The clip is a quick sampling of the many swarm robotics research projects going on …
Used hard drive repurposed as a cotton candy machine
If you’re reading this website, you’re probably someone who likes to take things apart. As such, you probably also have one or more old computer hard drives just sitting around in a parts bin. Of all the projects you could have for an old drive, here’s an interesting one – A Chinese engineer who operates …
Adding Bluetooth remote control to PC speakers
[Andrzej's] plain old computer speakers are ordinary no more. He pulled off a fairly complicated hack which now lets him control speakers via Bluetooth. He had a set of Creative brand computer speakers with a volume potentiometer that needed replacing. He was having trouble finding a drop-in replacement part and decided he would just go …
