Forgot your password?
No account? Register one!
March 3, 2012
Completely addicted to physical computing. SparkFun is becoming more and more like my drug dealer than just a parts/kit company, LOL!
News - Fluke Responds to Tradema… |
about a month ago
I’ve always heard Fluke were top quality instruments and it was certainly decent of them to action on making some recompense, which it seems like SparkFun is likewise doing a super decent thing with those meters.
I think the real problem is the trademark, copywhatever, and patent laws. I can understand wanting to prevent blatant attempts to masquerade as some brand name or whatever, but what happened here (at least what I’ve read thus far) strikes me as just plain stupid.
Also, I’m not fond of the claiming “it’s for your protection”. Seems to me that’s an over used PR claim used to justify draconian policies and actions (such as this). Doesn’t, in my opinion, have a lot of substance.
This incident wasn’t a Fluke, in terms of doing something like this :) To my mind, MSFT Windows 8’s new drivers have to be certified BS would be another example of doing something outrageously heavy handed, claiming it was to protect customers from evil drivers. Like iOs/Apple doing everything possible to prevent developers from distributing an app outside of apples app page (which MSFT is eager to do as well for the new RT && Phone style apps).
I must be getting old or something, this stuff ends up winding me up like an 8 day clock and seems to be getting pretty bad over all.
News - According to Pete: Curren… |
about 4 months ago
This bit got me a little confused. If you have a current mirror setup to supply some known current, for a string of LED’s say, and you aren’t certain of the number of LED’s, how does that effect the overall voltage drop across the transistor MOSFET? Do you more or less pick a supply Voltage that can accommodate the Max number of LED’s the circuit should allow? If the number of LED’s is less than that Max, is it reasonable to assume that voltage across the transistor (say it’s a BJT) will be Vs - (n*VLed)?
I’m gunna have to wire one up to find out for myself, but just thought I’d ask.
Usefulness of Current Mirrors:
1. For me at least, it’s another example of how transistors behave. I’m trying to understand them better, so practical application isn’t necessarily top o'my list.
2. It seemed to me that might be the current mirror is useful if you were wanting to measure a current without necessarily changing it. Don’t know, it was just one thought that came to mind.
I tend to see electronic circuits a bit like tinker toys or leggo’s. The more you are aware of and can use to some extent, the easier it is to do things (though maybe not always in the “best” way).
K, I don’t wanna sound like a Pete group-ee, but IMHO your missing the value of Pete’s byte sized tutorial/lecture/educational mmm video thing-ee’s. Happily, your also validating one of their key values.
As a total noob/non-degree’d I just wanna learn kind of guy Pete’s short segments on the core basics of various types of electronics that include just enough math to get into trouble with (or in some cases more than enough for the job) are just a start, I think. A very basic primer that might (and for me at least, does) give a person a bit of really useful, often practical information about designing and using transistors.
I took a look at the site you mentioned: I’d never seen it before and might never have encountered it, unless you’d commented on Pete’s excellent video. I’ll definitely be chewing my way through the content there and the Labs(They looked like awesome learning opportunities).
Point being, for nitwits like me, content like Pete’s video’s are a god send, as are the many helpful comments that get posted by folks. I don’t ever hear Pete claiming to be the final authority on anything, but I think he provides excellent insights into some rather difficult subjects that have, in my case at least, been a huge help in refining my understanding of electronics.
News - Christmas Candy Giveaway … |
about 4 months ago
December is like the month o'SparkFun for me this year. Gunna put one of those fly Cam’s in one of my home made rocket’s and get some cool footage from a rocket’s point of view:) Thanks for the treat!
Product DEV-11018 |
about 5 months ago
Would this Shield work to Send commands to an RF Link receiver enabled Uno (http://www.sparkfun.com/products/10532)? I’m assuming the RF22 wouldn’t work for that purpose.
News - Does It Matter Which Brow… |
about 5 months ago
I’m a FireFox fan and have been for years. I see Chrome is popular I haven’t seen anything in using it that would compel me to change my preferred browser. Internet Explorer strikes me as a poor joke and having had a bit to do with it’s development after IE6 just reenforces that opinion :(
News - Cyber Monday Is Upon Us! |
about 5 months ago
Just wanted to say thanks for a great Cyber Monday sale! I ordered a bunch of goodies for fun over the rest of the winter:)
News - According to Pete: Transi… |
about 6 months ago
1. I so way value the approach you’ve taken so far, it’s what I end up needing to do on the fly on my bench quite often.
2. ICircuit (http://icircuitapp.com/) which I use on my Surface, but can run on iPads, droid devices, etc is a nice and simple simulator that helps a bit in initially sketching out these types of circuits, seeing if my math is on track, thinking isn’t wrong, etc.
That said, I like the small byte sized According to Pete segments and one or two on how to use LTSpice would be great :)
SparkFun sells a couple of the Forrest Mimms books which I rather like and Electrical Engineering 101 which is another one that’s a good read as well. Also, the Encyclopedia of Electronic components Volume 1 is pretty good as it’ll help you with coming up with common circuits used for various components,etc.
I’m also fond of The Art of Electronics (and especially the student manual) and Practical Electronics for Inventors.
I’m sure Pete and most the other folks that actually know what they are doing have even better references, but these are the ones I’m forever reaching for.
No public wish lists :(