Is there a simple cheap upgrade to the good ol' 7805? I need the standard 5v but all of walter's extra boards (i.e. LCD backlights) are starting to get close to, if not over, that 1 amp that the 7805 has to give. I would assume I would never need more than 2, maybe 3 amps.
Anyone know of the super-duper cheapest place I can get geared motors? I am looking for something 6-12v, geared, with a final drive of somewhere around 100rpm... C'mon, yo -Somebody's got to have a wicked-good link, right?
So, playing with oddbots distance sensor, the subject of using an op-amp to beef-up the signal was raised... I got a lm324 and did a little looking over the data sheets and quickly found there are about 4000 different applications for this little guy. Does anyone want to suggest a schematic that would be best to amp-up a signal coming from a IR photo-transistor?