Archives
Last night I had an empty bottle of Jones Soda on my desk, so I rinsed it out and filled it with cool water. Then I took one of my super bright blue LEDs and suspended it over the mouth of the bottle at full brightness. It turned to look pretty cool, and in the [...]
A friend (Tyler, KB1HCY) recently dug out his old Gumstix single board computer and expressed a desire to see if it still worked. So, also being curious, I invited him and Pat Wilbur (KC2OXM) over to try it out at my place. For the record we’re using an unknown model of Gumstix with an Audiostix [...]
I’ve posted the next guide, this one is on Light Emitting Diodes (LEDs) and is available here. Enjoy, soon I’ll be posting some project updates, had a very busy few days working on the D-STAR system, and we had a very successful test today/yesterday.
Received my SparkFun order today, amongst the contents were the things I was seeking most, several 10k breadboard compatible potentiometers, three dual op-amps (LM358), three super bright 10mm LEDs (One red, green and blue) as well as a few other toys. The two biggest deals are the opamps and the potentiometers, while not strictly the [...]
Well after Tom-Tom and Diana visited last weekend I now have the remainder of my tools and such so I’ll be working on the Parallel Port LCD project this weekend. It seems like I’ll probably need to power the display and backlight from the 9V battery anyway because the parallel port could be damaged if [...]
This is a quick sketch I made up of a circuit to power and control a Red, Green and Blue LED with varying brightness. The processor at the core is an ATtiny2313 from Atmel. It will accept three numbers over a serial link and use that to set the brightness of the corresponding LED using [...]