The bi-color matrices I ordered turned out to be common-anode ones, and not common-cathode as I expected. This means that I can't drive them with the HT16K33 chip as I planned, as it only has 8 cathode pins. I can't even use two such chips to drive the...
Liveboot is still useful, small utilities can liveboot and run wonderfully as a system to learn on, sandbox small projects on, or even to install from or repair systems with. We've even got some hacks for persistence, where your settings stay the...
I designed and built an ultrasonic system for my Hackaday prize entry (https://hackaday.io/project/4689-improve-the-haber-process). My goal was to have a system for exploring the Haber process, which I now have.The specs and design...
I'm searching for a word that adequately describes the blackhole of engineering time, when you spend the whole night looking for a component, comparing the host of "not-quite-perfect" features. Regulators are the perfect example! If it's got a perfect...
relay server, i just built and setting up 4 servers, going to be also adding on gsm/cdma/web/text terminals that i will then beable too voip the server then through the terminals, have my own cell service, there are more compoents invold. no need to...
I hope this is the right place to post this. I'm building an 8x8x8 single color LED cube. I've built test circuits on a breadboard and it works. However, I'm disappointed that the LEDs are much dimmer than when they're not multiplexed. It makes sense...
Hi Everyone, I'm new here to hackaday.io and have been a stalker over at hackaday.com for a few years now. The talent, creativity, and genius of the folks who end up on Hackaday is absolutely amazing. I'm here on the Stack because I have some cool hardware...
A member asked about which of the Tesla inventions I wanted to work on as a team build? Pick any of his projects, one person mentioned "the death ray" I was gearing toward his motorized boat. Once we have enough suggestions we can due a vote. (1. Build...
Hello All, I maintain a blog about the polywell. For those who do not know, the Polywell is an idea for a fusion reactor. It is based off the fusor (a concept some of you guys are building and talking about on the project page). I have some fusion/polywell...
Certainly SOMETHING could be done with 5000 22ohm resistors. http://www.goldmine-elec-products.com/prodinfo.asp?number=G20026 The best I've got is a physical implementation of that old Google Challenge: You've a giant matrix of resistors, what's the...
I impulsed a sleeve of programmed chips, with stickers covering what they were. They are a Motorola XC68HC705C9CP microcontroller in a 40-pin DIP package. http://www.elnec.com/device/Motorola/MC68HC705C9+%5BPLCC44%5D/ ^Any one know of a dedicated site...