Kevin Darlington

Hello World!

Valentine's Day 8x8 RGB LED

I decided this year to make a 8x8 RGB LED device to give to my girlfriend for Valentine’s Day. I had made her a heart of red LEDs two years ago and I decided to step it up a little. No, this was not a cheap solution (it cost around $100 in materials, including all the stuff I bought that I ended up not using). I spent more time on this thing than anything I have made before.

Don't buy cheap USB to RS232 converters

So, my girlfriend bought me a STM32F103 board to play around with that has a RS-232 serial port on it to program it. Since I haven’t owned any computer in the last few years that has a serial port, I needed to get a converter.

Boduino - projector blackout device (v1)

At church, we have a projector device that is hooked up to the computer that allows us to show words to a song or a video. The problem is the VGA to composite converter we have does not have a button to black out the projector. So, when I go to get a video ready to be shown, the whole congregation sees what I’m doing.

High performance DIY fume extractor

Lately, I’ve been inhaling a little too much flux fumes so I decided that I needed a fume extractor. I saw a lot of DIY fume extractors on the web but I wasn’t satisfied with the performance of those extractors. A lot of the demonstrations showed that you had to be within 2 inches of the fan in order for it to work properly.

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