very interesting... an exceptionally robust battery chemistry that has gone almost unused for 35 years

this is a beautiful kludge if i've ever seen one :)

a lesson in fear and ignorance. doesn't this sound familiar?

ok, so pretty much anything can record video now

tacky? no way... this diagram has class :D

the beginning of self-service telecommunications

it's Evil Mad Scientist Labs' 2 year anniversary! join me in congratulating them... and visit for a great year's roundup of mad science projects.

no matter what your walk of life, this modern marvel is worth seeing. some will laugh, some cry, and some rejoice :D via the inimitable xtine66

sheesh, remember when devices were simple and friendly? like a watch: you put it on your wrist, and when you look at it, you see the current time.

this must the most over-engineered spud gun ever. great technical walk-through though... full of good design ideas

sounds like the problems with lead-free solder are even worse than having the lead. yet another vote to keep lead-based solders.

yes... the next design needs a live camera, mic, and solar photovoltaics for power. so close... :)

one of my favorite pics from this set. how many horsepower??

has a really good section on diodes, and i'm checking out the rest. thanks to ar0cketman! :)

i'm impressed... it's a clever invention

fantastic 1950's product introduction; steve jobs couldn't have done it better

Good idea, I'm going to try this.

Update: It works! I built the one-transistor amplifier on this page to boost the mic output up to line level for my Mac mini:
http://www.diylive.net/index.php/2005/12/19/ten-most-needed-circuits-for-the-diyer/

Manufacturer of electronics project boxes and accessories.

Really easy color-code finder... now I don't have to remember a thing :)

I'm posting this circuit diagram of an op-amp as abstract art (no, not op-art).

Clever and delightful electronics projects