futz f&ts v.i. To tinker experimentally; to change something just to see what it does

In a recent Ebay China toy order I grabbed four HY-SRF05 ultrasonic rangefinder sensors to play with. Can't beat the price at $1.89 USD each with free shipping. They'd be dirt cheap at twice that price.

Here I'm controlling the SRF05 with a PIC18F2680 and displaying the results on my "Predko" 2-wi...

Continue reading...

Ever since I was a youngster I've always wanted an oscilloscope. I didn't know much about them, but I knew that every electronics lab has them and they looked like they must be a good thing to have. Several months ago I finally broke down and decided to go oscilloscope shopping. I ended up with a Si...

Continue reading...

So I drew up a board for the Silicon Labs CP2102 chip and made all the improvements I wished I had done on the CP2101 board. Great little ICs. I drew the board much more compact this time and left off the unnecessary extra pads. Once again I had the boards made at DorkbotPDX and as usual they came...

Continue reading...

I designed a PC board in Eagle for the Silicon Labs CP2101 USB-to-UART Serial Converter chip. These are awesome little ICs. Very simple to use. Had the boards made at DorkbotPDX, and as usual they came out pretty good.

(NOTE: This chip has been discontinued. I built a board for their newer CP210...

Continue reading...

I'm posting some code here for Drizza on YouTube. Much of the original page text was lost, but I have the images and some text. So here's what I have.

I built the circuit on a dipmicro electronics PB1 proto board. Excellent little boards for building small one-off projects.

In these images I'm...

Continue reading...