Friday, February 29, 2008
My first post is already live. Subscribe and enjoy.
Thursday, February 28, 2008
Tuesday, February 26, 2008
Tuesday, February 19, 2008
It's busy at work
The modular case still isn't put together
waahh waahh wahhh
The Devi Ever Bit Mangler and Dream Mangler showed up! :D Expect a video this weekend.
Tuesday, February 12, 2008
Sunday, February 10, 2008
My experience so far with electrical engineering is much harder than my experience with software engineering. It's quite confusing...most of which probably brought on by many incorrect assumptions. In particular, I keep thinking of the flow of the circuit like the flow of an audio signal. Which, in some ways, is very similar if not the same, but it's also in many ways, not the same at all. For example, I was looking at an example schematic of how the TubeScreamer tone control works (I'm not looking to build a tubescreamer...yeck...just looking for academic purposes). The tone control was basically a pot with it's wiper connected to ground through a capacitor...with it's 1 and 3 lugs going from the negative input of an op amp back to the audio input. What I couldn't understand is how this worked as a bi-polar tone control...why does turning it one way roll off highs, and the other way roll off bass...I could only see that it would roll off highs. That is, until I realized that turning the one way caused the audio input signal to flow to ground through that cap too!
I've made up the following mnemonic to help me remember:
"Shit Always Wants To Go To Ground"
I made another trip out to Halted yesterday...god I love that place. They didn't have several of the things I was looking for this time though; particularly nuts to replace those Vector nuts for the rails. Their screw/nut stock ratio is a bit lopsided...many more screws available than nuts. They were a bit short on potentiometers as well... It certainly is *THE* place for resistors, caps, diodes, and transistors though...ICs as well. I'm sure Halted is going to be a weekly visit for a long time to come.
Fun stuff for this weekend is now officially over though...it's time to do the taxes.
Thursday, February 07, 2008
Monday, February 04, 2008
Sunday, February 03, 2008
effective...I've learned that the hard way I suppose.
Well since I'm blocked on working anymore on the case, I've got a good
excuse to work on that guitar pedal prototype. It's not the "Chop Shop" one that I mentioned last time, but rather a more immediately useful one. More details once it's working. :)
PS. I've signed up on VIRB. If any of you also have a VIRB page, hit me up.
Saturday, February 02, 2008
I also found 4-40 screws for use with the Vector nuts, I picked up 50 of them for...wait for it...50 cents!!!
I got some extra parts for a guitar pedal idea I'm working on, plus a 3rd-hand tool, nicer wire stripper...walked out of there spending less than $40!
Offcially my new favorite place.