Hack A Day Is Always Hiring

October 3, 2008 by Eliot 13 Comments

We’re always looking for people to contribute posts daily and help expand the site. We’ve added a handful of contributors in the last couple months, which you can see in our new How-tos.

This is a paid, freelancing position that requires professionalism, consistency, and reliability. We want to hear from people that are passionate about software/hardware hacking and growing Hack a Day. To apply, send the following to jobs@hackaday.com

A short bio about yourself
3 example daily posts written in the style of Hack a Day
3 software or hardware how-tos you’d like to see. For examples of work we’ve done in the past, look here, here, here, and here.
A couple sentences on how you would improve the site either through features or content
Any additional reasons why you would make a good fit for Hack a Day

Do not send any attachments. Having your own blog you can show off is a definite plus.

[photo:fbz]

Animated LED Eyes For Halloween

October 3, 2008 by Caleb Kraft 5 Comments

[Matt Daughtrey] sent us this sweet little project he’s doing for Halloween. He’s building some animated LED eyes. He says that the whole thing is 3 individual LMDriver platforms, another project he’s working on. There isn’t any info available about that, but he does expand a little. He states that each display module uses an Atmega169 with some heavy multiplexing. The eyes really don’t look that impressive sitting on the bench, but watch the video to see how cool they really are.

We noticed that the back of the boards appear to have http://www.embeddedether.net on them. Unfortunately that site seems to have been grabbed by a domain squatter.

How-to: Networked Graffiti Wall

October 2, 2008 by Ian 22 Comments

[youtube=http://www.youtube.com/watch?v=G8KprTVbHD4]

Wondering what we did with our web server on a business card project from last week? It’s powering a giant LED graffiti wall. Animations can be user-submitted using the online designer. You can watch a live feed of user animations as well. The online interface runs on the Google App Engine for maximum scalability and resilience.

In today’s How-to we cover all the ins and outs of building your own networked graffiti wall. Continue reading “How-to: Networked Graffiti Wall” →

Arduway: A Mini Segway Using The Arduino

October 1, 2008 by Jason Rollette 11 Comments

[Joe L] sent in the Arduway on the tipline. It is a robot made of Arduino and Lego NXT components based on the Segway. A software library to control LEGO NXT motors and a few sensors he used is available on SourceForge. This robot does a good job of balancing itself while moving forwards and backwards.

There is a YouTube video of it in operation after the break.
Continue reading “Arduway: A Mini Segway Using The Arduino” →

PICBASIC Complex LED Matrix

September 30, 2008 by Jason Rollette 13 Comments

This PICBASIC complex LED matrix solution was developed by [Olivier de Broqueville] to drive a matrix of LEDs. Using some cheap transistors, common red LEDs, and a PIC16F628, he is able to drive a 6×6 LED matrix. This project is very well documented and has everything available including: circuit board layouts, schematics, PICBASIC source, VB computer interface program, and parts list.

Parts: 0.1uF Decoupling Capacitors

September 29, 2008 by Ian 30 Comments

Most ICs need to be decoupled from their power supply, usually with a 0.1uF capacitor between each power pin and ground. Decoupling is usually used to remove noise and to smooth power fluctuations. Every project will need a few decoupling capacitors; our mini web server project has three ICs that require a total of 11. This can be an expensive part to buy in singles, so it’s crucial to stock up online. Read more about our favorite bulk through-hole and surface mount decoupling capacitors after the break. Continue reading “Parts: 0.1uF Decoupling Capacitors” →

A Remote Controlled RGB Light Bulb Lamp

September 28, 2008 by Jason Rollette 9 Comments

RGB just got a lot brighter by using 3x60Watt flood lights instead of an LED. The bulbs are driven via TRIACs and the whole thing uses a remote control to change the levels of the three bulbs. It is also able to store these levels for later recall. The IR receiver was taken from a dead TV set along with its remote control, or a universal remote set to a Phillips TV can be used. The source code and schematic for this project are available.