Display Tool

I had a busy (and awesome) weekend, but I didn't have quite as much finished product as I'd like.

I did some work on my LED display, but nothing too intresting (put in a decade counter for a row driver, did some testing, etc.). I did write a tiny PHP Grid to Array Tool to help me generate some arrays. Just check the boxes for 'on' pixels, and get an array out. The tool is pretty basic, but it wouldn't be hard to put in a custom row/column count. Image to array would be nice, or font to array If I could make it scale correctly.

Meanwhile Kat is kicking ass and taking names. She's been pushing herself really hard, and making me look bad. So this week I need to think about how I can step up my game...we shall see.


For Christmas my sister got me a bag of Sugru. It's a silicon/rubber clay like substance that you can mold like clay. You can mold it to fit just about anything, and it sticks to a variety of surfaces. You can mold it to fix, create, or decorate. Once molded, you leave the sugru cure for 24 hours or so, and you have an awesomely fixed/made object.

Sugru Project 1


One of my favorite things to do with Sugru so far is attach magnets to things. I've attached magnets to my speaker pod, plastic eyes, and my favorite - a flashlight.

My Leatherman S3 is probably my favorite flashlight. However there's plenty of times when I need to hold it in my mouth or precariously balance it on some nearby object. Well, not any more! The rare earth magnet is strong enough to hold my flashlight to any magnetic surface. I also like that I can attach my flashlight to my coat via the plates that I put in my coat last month.

Read more: Sugru!

Vintage Handset Bluetooth Mod


The idea for this project is pretty straight forward - put a small bluetooth headset into an antique phone headset.

After scrounging the local antqiue dealers. I came across a great candelsitck headset. It was in fairly good condition (some chips on the ceramic parts, but surprinigly no rust) and it even had an external button!

Read more: Vintage Handset Bluetooth Mod

The Internet 2.0

Have you ever wanted to build your own "The Internet" of "The IT Crowd fame? This video will run you through the simple steps to get your "Internet" up and running in no time.


2n3904 NPN Transistor1
LM324 Quad Op-Amp1
47 K Ω resitors4
100 K Ω resitor1
100 Ω resitor1
Red LED1
1n4148 Diode1
Black Plastic Project Box1




Bill Bowden's Original circuit called for a LM1458 dual Op-Amp, but I used a LM324 quad Op-Amp, since that's what I had on hand. The pinout numbers are almost identical - only the power and ground pins are different.

Did you like this video? Then check out my work on The IT Life

Original LED Circuit by Bill Bowden

Music - "Internet" by Kubi

Passive Agressive Game Of Life Display

Game of Life LED Display mounted

This display was designed and built as part of the "Passive Agressive" art show.

The display uses 100 blue LEDs to display various patterens. Many large scale LED displays are multiplexed, to save power and output pins. The drawbacks are reduced light output, and the need to rely on using Persistance of Vision to simulate a frame on the board. I ended up deciding to make each 'pixel' on my display individuallty adressable. I was able to do this because the number of outputs I needed (100) was reasonable to wire, and I didn't need to acheive a very high refresh rate.

Read more: Passive Agressive Game Of Life Display